SAIP2026

Session

Poster Session 2

8 Jul 2026, 16:20

Great Hall ( University of the Western Cape)

4. A Cosmological Framework with Variable Fundamental Constants

Bekithemba Sibanda (National University of Science and Technology)

08/07/2026, 16:20

Track D - Astrophysics & Space Science

Poster Presentation

The standard ΛCDM model of cosmology, while remarkably successful, faces a critical challenge:
the > 5σ discrepancy between local and early-Universe measurements of the Hubble constant
(H0)—the Hubble Tension. This persistent anomaly suggests that our assumption of immutable
fundamental constants (the fine-structure constant α, gravitational constant G, and speed of light c)
may require...

119. A Simulation of Galactic Proton Spectrum Observed Over Solar Minimum Period of Solar Cycle 24

THATO MAJA

08/07/2026, 16:20

Track D - Astrophysics & Space Science

Poster Presentation

Measurements of cosmic ray isotope fluxes by spacecraft missions, such as
PAMELA, have generated interest in the study of solar modulation over changing
solar activity. These exceptional measurements provide an opportunity for
improved numerical modeling of the solar modulation of galactic cosmic rays
across a wide range of rigidity at Earth. In this study, a three-dimensional drift
model...

32. A study of Phase Stability and Atomic Ordering in Quenched Fe-Ga-Tb Magnetostrictive Alloys

Anelisiwe Gqumani (Nelson Mandela University)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

The magnetostrictive performance of Fe-Ga alloys is strongly governed by atomic ordering and metastable phase stability, yet the role of rare-earth microalloying under non-equilibrium processing remains poorly understood. This study investigates the effect of a minor Tb addition (0.1 at.%) and rapid water quenching on the phase stability and microstructure of Fe-26Ga and Fe-27Ga alloys using...

165. Ab initio study of thermodynamic, mechanical and vibrational properties of FePt-Cu alloys

Mr Mashilo Matlala (University of Limpopo)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

FePt alloy, particularly in its ordered L10 phase is widely recognized as a promising candidate for advanced magnetic recording applications due to its exceptional magnetic anisotropy and thermal stability. However, its practical implementation is limited by the several challenges, including high ordering temperature and high material cost due to Pt content. In this study, ab initio study...

284. Adsorption of Croconate Dye (CR1) on (210) Brookite TiO2, Surface for Application in Dye-Sensitized Solar Cells (DSSCs)

Nkosana Mkhatshwa

08/07/2026, 16:20

Track G - Theoretical and Computational Physics

Poster Presentation

Dye-sensitized solar cells (DSSCs) have emerged as promising low-cost alternatives to conventional photovoltaic technologies, in which device efficiency is largely determined by interactions between dye molecules and semiconductor surfaces. In this study, the adsorption behavior of a croconate dye on the brookite TiO₂ (210) surface was investigated using density functional theory (DFT) to...

230. Adsorption studies of dithiocarbamate collectors on the mooihoekite (402) surface

Kagiso Mashishi (University of Limpopo)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Mooihoekite (Cu₉Fe₉S₁₆) is a copper–iron sulfide with a tetragonal, metal-rich structure derived from chalcopyrite, commonly intergrown with other sulfides such as haycockite and pentlandite in complex ore deposits. Despite its relevance in flotation systems, its flotation behavior remains poorly understood, limiting the optimization of separation processes that rely on mineral-specific...

199. AIMD-MLFF study of bulk, surface and collector’s adsorption on sperrylite (PtAs2) mineral

Ivyn Ndhlovu (University of Limpopo)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

The machine-learned force field (MLFF) method embedded within ab-initio molecular dynamics (AIMD) in VASP was employed to investigate the bulk, surface and collector’s adsorption properties on the PtAs₂ (100) surface at 300K. This approach was used to gain deeper insight into the physicochemical behaviour of the sperrylite mineral (PtAs₂). AIMD-MLFF bulk training gave a lattice parameter of...

449. Algorithm for detecting Radio Frequency Interference (RFI) in MeerKLASS Intensity mapping Data

Tamera Kassie (SARAO, UWC)

08/07/2026, 16:20

Track D - Astrophysics & Space Science

Poster Presentation

MeerKLASS is a single dish HI intensity mapping survey of the MeerKAT Telescope. Probing the 21 cm signal is coupled with challenges from foregrounds and radio frequency interferences (RFI) which contaminates the data, and in turn our cosmological signal. The MeerKLASS collaboration has produced a detection of the HI cosmological signal using cross-correlations with galaxy surveys. However,...

185. ANALYSING VARIABILITY IN BLUEBERRY GALAXIES IN SEARCH OF AGN ACTIVITY

Unathi Tshabalala

08/07/2026, 16:20

Track D - Astrophysics & Space Science

Poster Presentation

Blueberry galaxies are a class of low-mass, low-metallicity, and extremely compact starbursts, considered local analogues to high-redshift star-forming galaxies. This study investigates the hypothesis that a subset of these systems hosts Active Galactic Nuclei (AGN). Photometric light curves for an initial sample of 20 Blueberry galaxies were extracted from Asteroid Terrestrial-impact Last...

409. Assessment of the Impact of SAIP ECD Science Skills Accelerator Programme Training on ECD Practitioners' Confidence in Vhembe District, South Africa

Vhuhwavho Khomunala (University of Venda)

08/07/2026, 16:20

Track E - Physics for Development, Education and Outreach

Poster Presentation

Early exposure to science is critical for developing curiosity, problem-solving skills, and foundational cognitive abilities in young children. However, many Early Childhood Development (ECD) practitioners in South Africa lack the training, confidence, and resources to effectively integrate science into daily teaching practices. This study evaluates the impact of the South African Institute of...

414. AUTOMATED FOURIER ANALYSIS WITH PYTHON

Sibongile Majola

08/07/2026, 16:20

Track D - Astrophysics & Space Science

Poster Presentation

This study addresses the inefficiencies of existing Fourier analysis software for astronomical time-series data, such as Period04 and FAMIAS, which typically require file-by-file processing. The aim was to develop a scalable and automated solution for batch processing large datasets in order to save time and improve reproducibility. To achieve this, a Python-based Fourier analysis pipeline was...

413. AUTOMATED FOURIER ANALYSIS WITH PYTHON

Sibongile Majola

08/07/2026, 16:20

Track D - Astrophysics & Space Science

Poster Presentation

This study addresses the inefficiencies of existing Fourier analysis software for astronomical time-series data, such as Period04 and FAMIAS, which typically require file-by-file processing. The aim was to develop a scalable and automated solution for batch processing large datasets in order to save time and improve reproducibility. To achieve this, a Python-based Fourier analysis pipeline was...

52. Automating Galaxy Classification with Unsupervised Machine Learning

Kirsten Elliott (University of Western Cape)

08/07/2026, 16:20

Track D - Astrophysics & Space Science

Poster Presentation

Self-supervised learning offers a powerful way to analyse large astronomical image datasets without relying on labelled training samples. Mohale & Lochner (2024) demonstrated this by fine-tuning a ResNet-18 model with the Bootstrap Your Own Latent (BYOL) framework to produce 512-dimensional feature representations for galaxies in the Dark Energy Camera Legacy Survey (DECaLS) survey. After...

163. Building a Public Database for Ground-Based Solar Observations at the North-West University

Ruhann Steyn (Centre for Space Research, North-West University)

08/07/2026, 16:20

Track D - Astrophysics & Space Science

Poster Presentation

The solar telescope observatory at the North-West University has been operating since 2022 as a facility for routine ground-based solar observations in South Africa. A new development is the establishment of a public database through which these observations are made available in support of both education and scientific research. The resulting data products are intended to provide users with...

256. Characterization and Analysis of Radio Sources Detected in MeerKAT Galaxy Proto-Cluster Fields

SEKHONA TOLE (university of the western cape)

08/07/2026, 16:20

Track D - Astrophysics & Space Science

Poster Presentation

The Square Kilometre Array (SKA), set to be the largest radio telescope ever constructed, is currently under development in South Africa(mid-frequency array) and Australia(low-frequency array). As a key precursor instrument, South Africa’s MeerKAT radio telescope provides unprecedented sensitivity and resolution at L-band frequencies. This study utilises early reduced MeerKAT observations...

202. CHEMICAL SURFACE PROPERTIES OF MN3O4 (001), (010) & (100) FACETS.

Edwine Matlou (University of Limpopo)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Lithium-ion batteries (LIBs) currently dominate the rechargeable battery market, yet they face inherent limitations including low energy density (100-200 Wh/kg), high production costs, supply chain vulnerabilities, and safety concerns arising from flammable lithium and organic electrolytes. Metal-air batteries (MABs) have emerged as a high-capacity alternative, offering theoretical energy...

509. Chemical trends in defect stability, electronic and magnetic properties of 3d TM-doped WSe₂

Prof. Evans Benecha (University of South Africa)

08/07/2026, 16:20

Track G - Theoretical and Computational Physics

Poster Presentation

Dilute magnetic semiconductors (DMSs) offer a promising route to novel hybrid electronic devices that can integrate logic processing, communication, and data storage into a single integrated circuit (IC). Two-dimensional (2D) transition metal dichalcogenides (TMDCs) are particularly appealing for DMS applications due to their excellent spin relaxation times and long spin diffusion lengths....

432. Comparative gas sensing performance of LaFeO3 and SmFeO3 perovskite nanoparticles prepared by Hydrothermal Method .

Philani Kunene (University of Zululand)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Lanthanum- and samarium-based perovskites with the general formula ABO₃ were synthesized using the hydrothermal method. Structural characterization by X-ray diffraction (XRD) confirmed the formation of pure-phase LaFeO₃ and SmFeO₃, with crystallite sizes increasing from 10 nm to 19 nm. High-resolution transmission electron microscopy (HRTEM) further verified the perovskite structure, revealing...

44. Comparison study on the TeO2-based materials developed using HNO3 and H2O2 for gas sensing applications

TUMI KEVIN MGAGA (UNIVERSITY OF THE FREE-STATE)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Effective air quality monitoring in mining environments remains challenging due to limited access to reliable, accurate, and fast gas-sensing technologies. Semiconductor metal oxide gas sensors represent a promising alternative owing to their simple design, robustness, and high sensitivity. This study investigates the synthesis, structural, and morphological characterization, and gas sensing...

77. Composition-Dependent Electronic and Optical Properties of Ge-Doped CsSnI₃ from First-Principles Calculations

Dr Neelam Saghir (University of South Africa)

08/07/2026, 16:20

Track G - Theoretical and Computational Physics

Poster Presentation

This study presents a first-principles investigation of germanium (Ge)-doped CsSnI₃ perovskites as promising candidates for lead-free photovoltaic applications. With increasing demand for environmentally friendly and high-efficiency solar materials, all-inorganic tin-based perovskites have emerged as viable alternatives to toxic lead-based systems, though their practical implementation is...

501. Comprehensive Ab-Initio Study of Optoelectronic Properties of CsGeBr3 using Quantum Espresso and WanTiBEXOS.

Mr Kamogelo Sebolai (University of Johannesburg)

08/07/2026, 16:20

Track G - Theoretical and Computational Physics

Poster Presentation

Abstract
Perovskites exhibit a remarkable array of optoelectronic properties that are vital for advancing photovoltaic designs. In-depth investigations into the electronic and optical characteristics of all-inorganic CsGeBr3 have been conducted using density functional theory with the PBE exchange-correlation functional. To obtain precise and realistic bandgap values, the HSE06 hybrid...

142. Computational Study of Thermodynamic, Mechanical, and Electronic Properties of LiMn1.5Ni0.5O4 Cathode Material

Ms Thandi Mulaudzi

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

The escalating demand for efficient, reliable, and sustainable energy storage has catalysed intensive research into advanced cathode materials for next-generation of lithium-ion batteries. Among these cathode materials, LiMn1.5Ni0.5O4 (LMNO) has emerged as a frontrunner due to its high operating voltage (~4.9 V), cost-effective composition, and advantageous 3-D lithium diffusion pathways....

156. Confronting the Universe’s Accelerating Expansion: Insights from a Hybrid Scale Factor

Goratamang Ann Gaedie (North-West University)

08/07/2026, 16:20

Track D - Astrophysics & Space Science

Poster Presentation

The Lambda Cold Dark Matter (ΛCDM) model is a well-known cosmological model that has been used to investigate the acceleration of the universe. In our earlier study, we introduced a modified scale factor (Aydiner et al., 2022) to examine the universe’s accelerating expansion without relying on the conventional dark energy framework of the lambda-cold-dark matter model. In order to test the...

404. Constraining Spider Pulsar Binary Plasma Properties Through Radio Eclipses

Thulo Letsele

08/07/2026, 16:20

Track D - Astrophysics & Space Science

Poster Presentation

In spider pulsar binaries, the energetic pulsar wind ablates the companion star, producing dense intrabinary plasma that leads to radio eclipses and complex propagation effects impacting the observed pulsar signal. Previous studies have shown that the properties of these eclipses can constrain the geometry and dynamics of the intrabinary shock formed by the interaction between the pulsar wind...

473. Deep-Level Defects in Electron-Irradiated n-GaAs Investigated by Conventional, Laplace DLTS and Admittance Spectroscopy

Dr Assane Talla (Nelson Mandela University)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Gallium arsenide (GaAs) remains a key material for optoelectronic and high-speed electronic applications, including laser diodes, infrared light-emitting diodes, solar cells, and high-frequency switching devices. In this study, electrically active defects in Si-doped n-type GaAs are investigated using conventional Deep Level Transient Spectroscopy (DLTS), Laplace DLTS, and Admittance...

499. Density Functional Theory Driven Numerical Analysis of High-Efficient CsGeBr3 Perovskite Solar Cells

Mr Kamogelo Sebolai (University of Johannesburg)

08/07/2026, 16:20

Track G - Theoretical and Computational Physics

Poster Presentation

Abstract
The research developments of innovative photovoltaic designs that not only achieve high efficiency but also remain affordable have grown significantly in recent years. In particular, the eco-friendly perovskite-based solar models show incredible promise for a sustainable energy future. Perovskites, due to their unique properties such as tunable energy bandgap, long carrier diffusion...

71. Detection of the kinematic Sunyaev-Zeldovich signals using Pairwise momentum estimator.

Ms Ayanda Mnikathi

08/07/2026, 16:20

Track D - Astrophysics & Space Science

Poster Presentation

The kinematic Sunyaev-Zel’dovich (kSZ) effect comes from the Doppler shift of Cosmic Microwave Background (CMB) photons scattered by moving galaxy clusters. It offers a strong way to study the large-scale velocity field and test cosmological models. In this thesis, we aim to detect the kSZ signal by using the pairwise momentum estimator on data from the Atacama Cosmology Telescope Polarimeter...

159. DEVELOPMENT OF MACHINE LEARNING MODELS TO PREDICT PROPERTIES OF HALIDE PEROVSKITE MATERIALS

Ms Angela Mmasefako Maboa (University of Limpopo)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Angela Maboa1, Keletso Monareng1, Petros Ntoahae1 and Rapela Maphanga2

1Department of Physics, University of Limpopo, Private bag X 1106, Sovenga, 0727, Polokwane, South Afri-ca
2Renewable and Sustainable Energy Research Centre, Sol Plaatje University, Private Bag X 5008, Kimberly, 8300, South Africa
3 National Institute for Theoretical and Computational Sciences, NITheCS, Gauteng, 2000,...

297. DFT screening of interfacial properties in Cbznaph-SAMS for stable inverted perovskite solar cells.

Dr NEANI TSHILANDE (University of Venda)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Carbazole-based self-assembled monolayers (SAMs), such as CbzNaph, have attracted interest for their hole-selective performance in inverted perovskite solar cells [1,2]. This is attributed to their large dipole moments and strong π–π stacking interactions. Despite their improved performance, they still face long-term stability challenges due to their susceptibility to solvent-induced...

304. Dopant-Concentration Dependence of Structural and Transport Properties in Ni/Co-Doped LiMn2O4 spinel from Molecular Dynamics Simulations

Mr Tharollo Malepe (University of Limpopo)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Molecular dynamics simulations were employed to investigate the effect of Li+ transport in Co- and Ni-doped spinel nanostructures. LiMn2-xMxO4 (0 ≤ x ≤ 0.08, M=Co and Ni) spinel nanostructures were successfully generated with the simulated amorphization and recrystallization. The spinel structure, which is a promising cathode material for lithium-ion batteries due to its cost-effectiveness,...

422. Effect of annealing temperature on structure, morphology, and optical properties of La2Z nTiO6

Asanda Lakaje (University of the Free State)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Double perovskites are known for their wide, indirect band gaps. However, systematic investigations into the effect of annealing temperature on the coupled structural evolution, morphology, and defect-related optical properties of undoped La₂ZnTiO₆ remain limited. Therefore, this study investigates the effect of annealing temperature on the structural, morphological, and optical properties of...

441. Effect of Shell Thickness on Interfacial Stability in Li2MnO3 Core–Shell Cathodes

Tshidi Mogashoa (University of Limpopo)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Lithium-ion batteries are a crucial technology for energy storage and cathode materials play a key role in their performance. Core-shell architectures are emerging as an effective strategy to address structural degradation and phase instability in lithium-rich cathodes such as Li2MnO3. By stabilising interfaces, these heterostructures enable improved electrochemical performance and enhanced...

388. Effect of thermal annealing on the structural, optical and thermoluminescent properties of NaYF4 nanoparticles

Prof. Pontsho Mbule (University of South Africa)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

NaYF4 nanoparticles were synthesized using a solution combustion method at 500 °C and subsequently annealed at 700 °C to investigate the effect of thermal treatment on their structural, optical, and thermoluminescent properties for dosimetric application. X-ray diffraction (XRD) analysis confirmed the coexistence of cubic and hexagonal phases in both samples, while annealing led to enhanced...

448. Effect of Zinc concentration on ZnxFe2o4 for detecting toxic and flammable gaese

Vuyolwethu Mhlebi (University of Zululand)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

ABSTRACT
Non-stoichiometric spinel ferrites are attracting increasing interest for gas sensing because their electrical and surface properties can be altered through composition control. In this work, ZnxFe₂O₄ NPs with varying zinc content (0.90, 0.95, 1.00, 1.05) were synthesised through the microwave-assisted coprecipitation method and investigated for the detection of toxic and flammable...

474. Electron spin resonance study of Ce3+ and Dy3+ ions substituted cobalt and nickel nanoferrites : Low field microwave absorption

Anele Madlala (Iyunivesiti Walter Sisulu)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Ce3+ and Dy3+ ion substituted cobalt and nickel ferrites (CoCexDyxFe2-2xO4, NiCexDyxFe2-2xO4 and CoCexFe2-xO4 (0 ≤ x ≤ 0.05)) with fine particles (9 ≤ D ≤16 nm) were synthesized by glycol-thermal method. XRD analysis of samples investigated confirmed single phase cubic spinel structure with no impurity peaks. Broad electron spin resonance (ESR) signals for cobalt substituted compounds reveal...

143. Electronics and structural properties of Indium Selenide

Mr Tsietsi Rex Mooka (University of Limpopo)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Indium (II) selenide is a layered material with useful properties for electronics, solar cells, and other modern technologies. It is made up of thin sheets of atoms that are held together by weak forces, and it also belongs to group of metal chalcogenides. The study is about the atomic structure and electronic properties of InSe using density functional theory (DFT). Looking at the structural...

224. Elongated Radio Galaxies in MeerKAT Observations of Proto galaxy-clusters

Bevan Petersen (University of the Western Cape)

08/07/2026, 16:20

Track D - Astrophysics & Space Science

Poster Presentation

We will present results of an on-going study of some of the auxiliary detections made in MeerKAT observations to constrain Proto galaxy-clusters. The observations are estimated to constitute more than 5000 radio sources in each of the three fields that were observed. This work will identify and conduct an analysis of the Elongated Radio Galaxies detected in one of the three observed fields of...

98. Employing Empirical Mode Decomposition for Investigating Temporal Systematics in HERA observations

Mekuanint Kifle Hailemariam (University of the Western Cape)

08/07/2026, 16:20

Track D - Astrophysics & Space Science

Poster Presentation

Systematic effects are a major obstacle in 21 cm radio interferometry,
where faint cosmological signals are obscured by instrumental and
observational contamination. This work presents a set of diagnostic
methods designed to detect and characterize temporal systematics in
interferometric data from the Hydrogen Epoch of Reionization Array
(HERA).

We begin with the Temporal Discontinuity...

49. Engineering of MoS₂-based sensor toward ppb-level H₂S detection.

Ntsako Jason Mathebula (University of the Free State)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Air pollution remains one of the world's major challenges today. The continuous release of gases such as H₂S, CO, and NOx. The pollutants contribute to climate change, global warming, and various health-related diseases. Gas sensing technology has therefore emerged as an effective approach for monitoring and controlling air pollution. Two-dimensional (2D) layered materials, particularly MoS2,...

73. Enhanced toluene detection using Ag-functionalized high surface area Cr2O3@SnO2 core–shell heterostructure-based gas sensor

Kholofelo Mohloishane Seloane (University of the Free State, Physics Department)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

The development of highly selective and low-temperature gas sensors remains an imperative challenge for air quality monitoring and industrial safety. The toxicity and flammability of toluene, along with its associated risks to human health, render early detection and real-time monitoring essential. This study explores the novel Cr2O3-core@SnO2-shell heterostructures functionalized with silver...

281. Enhancing Structural Stability and Lithium Mobility in Spinel Cathodes via Prelithiated Core–Shell Engineering

MOGAU KGASAGO (UNIVERSITY OF LIMPOPO)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Spinel LiMn2O4 is a promising cathode material for lithium-ion batteries due to its low cost and three-dimensional lithium diffusion pathways. However, its application is limited by irreversible capacity loss and structural degradation associated with manganese migration, which are linked to structural instability and disrupted lithium transport. Prelithiation compensates for initial lithium...

166. Enhancing the Thermodynamic Stability and Mechanical Properties of FCC Platinum through Vanadium and Chromium Alloying, for jewellery application: A DFT Study

Mr Mawisha Jan Mafifi (University of Pretoria)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

In the ever-evolving world of renewable energy, metallurgy, medicine, jewellery, and fuel cells, platinum (Pt) remains a key mineral in these industries. Nonetheless, Pt in its purest shape is relatively soft, thus vulnerable to surface scratching, a distress in the jewellery sector. As such, alloying Pt to enhance its mechanical integrity is crucial for improving its scratching resistance....

174. Enhancing V2O5 Nanostructures Properties Via Ag Doping for Gas Sensing Applications

Perseverence khosa

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

In recent years, there has been substantial progress in the development of nanomaterials for gas sensing applications. One of the key challenges in this field lies in selecting an appropriate sensing layer, along with optimising the device structure, fabrication method, and morphology to fully exploit the sensing capabilities of the material. This work presents the synthesis of pristine V₂O₅,...

500. Experimental and Computational Insights into Structure and Upconversion in Spinel Zn2TiO4:Er3+,Yb3+

Sefako John Mofokeng (University of South Africa)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Rare‑earth‑doped phosphor nanomaterials have attracted significant research interest due to their efficient upconversion luminescence, whereby infrared radiation is converted into visible emission. Such materials are promising for a wide range of applications, including solid‑state lighting, optical converters, biosensors, and data storage technologies. In this study, the structural and...

478. Experimental investigation of MoS2, Ti3C2, and graphene-based composites for low Earth orbit applications

Nico Snyman

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

The Low Earth Orbit (LEO) environment presents a tough challenge for materials, exposing them to atomic oxygen, ultraviolet radiation, thermal cycling, and high vacuum conditions. These harsh conditions can wear down traditional spacecraft material (Finckenor, 2018; Grossman & Gouzman, 2003). As a result, there has been a growing interest in lightweight, functional alternatives, especially...

418. Exploring Long-term Ionospheric Total Electron Content over South Africa.

Modiri Mokaila (North West University)

08/07/2026, 16:20

Track D - Astrophysics & Space Science

Poster Presentation

The ionosphere is a dynamic, in-homogeneous, and electrically conductive plasma formed through the interaction of solar extreme ultraviolet (EUV) and X-ray radiation with the Earth’s upper atmosphere at altitudes of approximately 50–1000 km. Variations in ionization levels within this region significantly influence radio wave propagation and satellite-based communication systems. In this study...

124. Extraction and Geospatial Analysis of Wind and Solar Power Infrastructure Using OpenStreetMap Data in African Countries

Mr Nhlamulo Khosa (Green Technology Confucius Institute, University of Venda)

08/07/2026, 16:20

Track G - Theoretical and Computational Physics

Poster Presentation

The growing demand for sustainable energy solutions has accelerated the deployment of renewable energy infrastructure across Africa, particularly wind and solar photovoltaic (PV) systems. However, comprehensive and accessible datasets describing the spatial distribution and generation capacity of such infrastructure remain limited. This study addresses this gap by leveraging openly available...

442. Fabrication of Co3O4 Co-doped with NiZn for Selective LPG Gas Sensing

Mondli Ntshangase (University of Zululand)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Cobalt oxide (Co₃O₄) nanostructures co-doped with 5 wt%, 10 wt%, and 15 wt% NiZn were synthesized via the hydrothermal method. Structural analysis using X-ray diffraction (XRD) confirmed the formation of a pure spinel phase without any secondary peaks. The crystallite size increased from 19 nm to 48 nm with increasing dopant concentration. High-resolution transmission electron microscopy...

319. Field Calibration of Cosmic-Ray Neutron Sensors for Accurate Soil Moisture Monitoring

Aimee Dumont

08/07/2026, 16:20

Track D - Astrophysics & Space Science

Poster Presentation

Soil moisture is water content held within the pore spaces between the soil particles. It is a pivotal variable as it plays a major role in climate change processes, which is widely used in agriculture.
Soil moisture is traditionally measured with sensors that are invasive, labour-intensive, and subject to uncertainties. This study uses a non-invasive Boron trifluoride (BF$_3$) Cosmic-ray...

330. First-Principles Study of a Novel ZrSC Janus Monolayer: Structural, Mechanical, Vibrational, and Electronic Properties

Edwin Mapasha (University of Pretoria)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Two-dimensional Janus materials, characterized by their asymmetric surface composition, offer unique opportunities for tailoring electronic and mechanical properties. Among these, the hypothetical ZrSC monolayer, composed of zirconium sandwiched between sulfur and carbon layers, represents an underexplored system with the potential to merge the mechanical durability of carbides with the...

476. First-principles study of adsorption mechanisms of CO2 and CO on monolayer Nb2Se2C TMCC as an efficient gas sensor

Dr Chewe Fwalo (University of South Africa)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Greenhouse gas emissions, such as carbon dioxide and nitrous oxide, released during the combustion of fossil fuels, have been strongly linked to climate change effects, including prolonged droughts, floods, and intense heat waves, that can lead to diseases such as stroke and cardiovascular disorders. This connection has driven extensive research into toxic gas sensing and capturing, aiming to...

140. First-principles study on Tin-doped Li1.2Mn0.8O2 cathode material for Lithium-ion batteries

RAMAABELE BRIDGET MOKGABUDI (UNIVERSITY OF LIMPOPO)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Abstract:
The rising demand for compact, high-performance batteries, driven by the rapid expansion of portable electronics, has been effectively met by the rise of lithium-ion battery (LIB) technology. As the most viable energy storage solution to date, LIBs have become the cornerstone of the modern energy industry, powering everything from everyday consumer gadgets to the latest electric...

197. Fluorine-Doped Siligraphene (SiC₂): A Cluster Expansion and DFT Study of Stability, Electronic, and Mechanical Properties.

Samson Singo (University of Limpopo)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

The development of high-capacity electrode materials is essential for enhancing the energy density of lithium-ion batteries. Siligraphene (SiC2), inspired by silicon’s high theoretical capacity, has emerged as a promising anode material due to its high specific capacity and low open-circuit voltage. however, its performance is limited by poor mechanical stiffness. This study examines fluorine...

210. From One to Eight: Supersymmetry Restoration in Lattice 3D ${\cal N} = 4$ Super Yang--Mills

Dario Van den Berg (University of the Witwatersrand)

08/07/2026, 16:20

Track G - Theoretical and Computational Physics

Poster Presentation

Topological twisting provides a powerful framework for constructing lattice formulations of supersymmetric gauge theories. In three dimensions, a twisted version of ${\cal N} = 4$ super Yang--Mills theory can be discretized so that one nilpotent scalar supersymmetry is preserved exactly at nonzero lattice spacing. The remaining seven supersymmetries are broken by lattice artifacts of ${\cal...

420. Geometric Modelling of Crab-like and Vela-like Pulsar Systems

Mr Trevor Nyambe (Centre for Space Research, North-West University, Private Bag X6001, Potchefstroom 2520, South Africa)

08/07/2026, 16:20

Track D - Astrophysics & Space Science

Poster Presentation

Young neutron stars power bright multi-wavelength emission and drive energetic pulsar wind nebulae (PWNe). Accurate interpretation of these signals depends on the magnetic inclination ($\alpha$) and viewing angle ($\zeta$); however, independent observables often yield conflicting geometric constraints. To investigate these discrepancies, we analysed a sample of eight high-spin-down pulsars...

453. Hydrothermal fabrication and temperature-dependent magnetic properties of cobalt nanoferrite for high-frequency devices

Dr Amos Nhlapo (Sefako Makgatho Health Sciences University)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

The cobalt nanoferrite with crystallite of 12.89nm was successfully synthesized using the hydrothermal method. The X-ray diffraction (XRD) and the Fourier transform infrared spectroscopy (FTIR) confirmed the formation spinel structure. The obtained lattice parameter was 8.36 Å while the X-ray densities was 5.021 g/cm³. The scanning electron microscopy (SEM) revealed spherically shaped and...

376. Implementing a Charm Equation of State in the QGP Hydrodynamic Simulation, Trajectum

Liam Harris (University of the Witwatersrand)

08/07/2026, 16:20

Track G - Theoretical and Computational Physics

Poster Presentation

The Quark-Gluon Plasma (QGP) is an exotic state of matter where fundamental quarks and gluons are decoupled and the result is a medium of strongly-interacting matter. This state of matter is only achievable under extreme conditions, such as the results of colliding nuclei in a particle collider such as those performed at the Large Hadron Collider and Brookhaven National Laboratory. Trajectum...

40. Influence of A- and B-Site Cation Substitution on the Structural, Thermodynamic, and Magnetic Properties of Brownmillerite A₂B₂O₅ (A = Sm, Ce; B = Ni, Co) Nanoparticles

Khethiwe Cele (Rare Earth-Based Oxides and Nano Group, Department of Physics, University of Johannesburg, Cnr Kingsway Avenue and University Road, Auckland Park 2006, South Africa)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Crystalline Sm₂Ni₂O₅ (SNONPs) nanoparticles were synthesized via co-precipitation and sol–gel methods, while Ce₂Ni₂O₅ (CNONPs) and Ce₂Co₂O₅ (CCONPs) were prepared using a sol–gel route to investigate the effect of A-site (Sm, Ce) and B-site (Ni, Co) cation substitution on their structural, morphological, thermodynamic, and magnetic properties. XRD analysis confirmed that SNONPs crystallize in...

193. Influence of Ta on the Magnetic and Mechanical Properties of Fe50Co43.75Pt6.25 Alloy

Dineo Maepa (University of Limpopo)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

FeCo alloys, a class of intermetallic soft magnetic materials, have attracted considerable interest due to their exceptional magnetic performance, including high saturation magnetisation (~2.4 T) and elevated Curie temperatures (920–985 °C). Despite these advantages, their practical application is limited by the high cost of Co and poor ductility, particularly at low temperatures. Alloying...

2. Investigating the Implications of a Constant Density Profile in Stellar Convective Zones

Terry Mark Tukamusaba

08/07/2026, 16:20

Track D - Astrophysics & Space Science

Poster Presentation

ABSTRACT
Inthemid-1970’s,a 160-min periodic signal was detected coming from the Sun and the discoverers interpreted this as a gravity-
mode (g-mode) oscillation.
That is to say,they supposed this signal to be the vibration of the Solar surface. Similar signals where
also detected in a number of extraterrestrial sources which include Active Galactic Nuclei (AGN). Later re-analysis rebutted...

219. Investigating the maslovite (PtBiTe) surface stability and adsorp-tion of SDTBAT and SBOTTAs collectors using standard DFT and AIMD-MLFF.

TSHEPO RONALDO MAAKA (UNIVERSITY OF LIMPOPO)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

This study adopted the density functional theory (DFT) and ab-initio molecular dynamics (AIMD) modelling technique imbedded within the Vienna ab-initio simulation package (VASP). The machine learned force field (MLFF) was utilised for robustness of the AIMD simulations. These methods were adopted in the current study to understand the behaviour of platinum group minerals (PGMs) such as PtBiTe...

227. Investigating The Mechanical and Electronic Properties of Silver, Gold and Aluminium: First-Principle Study

Melokuhle Hadebe

08/07/2026, 16:20

Track G - Theoretical and Computational Physics

Poster Presentation

Abstract
The mechanical and electronic properties of Gold (Au), silver (Ag) and aluminium (Al) are systematically investigated using first principle calculations that on density functional theory (DFT). Geometry optimization confirms that all three metals crystallize in face-cantered cubic (FCC) structure and their lattice parameters show agreement with experimental data. The calculated...

205. Investigation of antiferromagnetic hematite bulk and surface properties using ab-initio method

Mariah Madie (University Of Limpopo)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

This study employed ab-initio density functional theory (DFT) with Grimme’s D3 dispersion correction to investigate the bulk and surface properties of hematite. The Hubbard U parameters 5.0 eV was adopted which gave a band gap of 2.55 eV and lattice parameters of a = b = 5.045 Å and c = 13.774 Å, which were in good agreement with experimental values (band gap: 1.9–2.6 eV; lattice parameters: a...

279. Investigation of Silver and Cesium Migration and Structural Evolution in 6H-SiC Following Helium, Silver and Cesium Implantation and High-Temperature Annealing

Nhlakanipho Mantengu (University of Zululand)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

In nuclear fuels, thin-film diffusion barriers are essential for preventing the release of radioactive fission products (FPs). Silicon carbide (SiC), which serves as the primary diffusion barrier layer, is exposed to various FPs along with helium (He) generated as a result of alpha decay of actinide elements and neutronic transmutation. Therefore, this study investigates the role of He in the...

196. Investigation of the redox characteristics of the Co₃O₄ (001) surface

Pabalelo Malatjie (University Of Limpopo)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

ABSTRACT

Currently, rising electric energy demand and depleting raw materials are increasing day by day, calling for alternative, clean energy storage equipment. Lithium–air batteries are considered among the most promising energy storage technologies due to their exceptionally high energy density (1086 Wh/kg) and large specific capacity (3842 mAh/g). However, they face a key practical...

504. Investigation of Ti4Nb2Pt2 shape memory alloys from binary phase diagram

Dr Mordecai Mashamaite (University of Limpopo)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

The Ti₄Nb₂Pt₂ alloys on Pt-rich sites was identified as the most stable configuration from universal cluster expansion derived by binary phase diagram. The supercell approach, as implemented in VASP, was employed to create a supercell containing approximately 64 atoms. In addition, the Ti₄Nb₂Pt₂ alloys was studied by investigating the structural, thermodynamic and mechanical properties using...

423. Luminescent Enhancement of ZnO-SnO2 Heterostructures Doped with Pr3+

Tahleho Mofokeng (University of The Free State)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

This study aims to enhance the photoluminescence properties of ZnO–SnO₂ heterostructures (ZS-H) through Pr³⁺ doping at different concentrations for potential use in optoelectronic coatings. The main challenges in optoelectronic coatings are achieving multifunctionality, as improving electrical conductivity often reduces optical transparency and flexibility, while defects and infrared...

228. Measurment of the Dark Energy Spectroscopic Instru- ment (DESI) Galaxy cluster bulky velocity with kinematic Sunyaev- Zeldovich (kSZ) signals from Atacama Cosmology Telescope Polarime- ter (ACTPol) Data Release 4.

Mr Isaac Gwato Chitete

08/07/2026, 16:20

Track D - Astrophysics & Space Science

Poster Presentation

In this research project, the Dark Energy Spectroscopic Instrument (DESI)
galaxy cluster bulk velocity will be measured using kinematic Sunyaev-Zeldovich(kSZ) signals from the Atacama Cosmology Telescope Polarimeter
(ACTPol)Data Release 4. The kSZ signal will be detected using 1-point statistics, then developing and applying aperture photometry on the BOSS North and Deep 56 regions of ACTPol...

459. Microscopic derivation of Open Quantum Brownian Motion for a particle in a potential with external periodic driving

Sindiswa Nhlapo

08/07/2026, 16:20

Track G - Theoretical and Computational Physics

Poster Presentation

Open quantum Brownian motion (OQBM) was introduced by Bauer et al. [1,2] as a special scaling limit of discrete-time open quantum walks (OQWs) [3,4], establishing a new mathematical framework for quantum Brownian motion. In this setting, the dynamics of the Brownian particle depend not only on dissipative interactions with a thermal bath but also on the state of the internal quantum degree...

208. Molecular Dynamics Insights into the Properties of Pyrite-Type RuS₂: A Computational Study

Monyeseroba Immaculate (University of Limpopo)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Pyrite-type transition-metal sulphides have attracted increasing scientific interest due to their applications in catalysis, environmental remediation, electronic materials, and mineral processing. Their performance strongly influenced by bulk and surface properties. In this work, molecular dynamics (MD) simulations were performed to investigate the structural and dynamical behaviour of...

179. Molecular dynamics simulations of TiO2 nanomaterials as a future anode electrode material

Thamia Molefe (University of Limpopo)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

ABSTRACT
The growing global demand for sustainable and high-performance energy storage systems has directed significant research attention toward titanium dioxide (TiO₂) as a prospective anode material for lithium-ion batteries [1]. In this study, the structural and thermodynamic behaviour of amorphous TiO₂ is systematically investigated using classical molecular dynamics (MD) simulations...

187. Molecular Insights into Novel Collector Adsorption on Hydrated Spodumene and Feldspar Surfaces: An AIMD-MLFF Study

Lesetja Matlabjane (UNIVERSITY OF LIMPOPO)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Spodumene (LiAlSi₂O₆) is a primary lithium-bearing mineral of significant industrial importance, particularly in the production of rechargeable batteries for electric vehicles. In natural ore systems, spodumene commonly coexists with feldspar (NaAlSi3O8), which serves as a major gangue mineral, necessitating efficient separation strategies. In this study, a combination of density functional...

350. Near- Redundant Calibration of HIRAX Visibility Simulation Data.

Luyanda Khanyile (University of KwaZulu-Natal, Pursuing a Master’s degree in Astrophysics.)

08/07/2026, 16:20

Track D - Astrophysics & Space Science

Oral Presentation

The Hydrogen Intensity and Real-time Analysis eXperiment (HIRAX) is a radio interferometer designed to probe the large-scale structure of the Universe through 21 cm intensity mapping, with the goal of constraining dark matter and dark energy. Achieving high-precision measurements requires accurate calibration of instrumental effects, particularly in the presence of non-redundant systematics...

212. Numerical Simulation Of The Astrospheres

Mr Solomzi Nobute (North west University center of space reseach)

08/07/2026, 16:20

Track D - Astrophysics & Space Science

Poster Presentation

This study investigates the large scale structure and time evolution of stellar
astrospheres with magnetohydrodynamic (MHD) simulations. We study the
heliosphere as an first example of an astrosphere, and then investigate Lambda
Cephei, a massive runaway O-type star. Astrospheres are formed when stellar
winds meet the interstellar medium (ISM). This produces a variety of...

454. Optimization of lead-free BaZrS3-based perovskite solar cell for better performance using SCAP-1D

Dr Paulinah Fasanmi (University of Johannesburg)

08/07/2026, 16:20

Track G - Theoretical and Computational Physics

Poster Presentation

In this study, a numerical simulation of a BaZrS3-based perovskite solar cell was performed using SCAP-1D. An attempt was made to optimize the performance of the solar cell configuration FTO/ZnO/BaZrS3/WSe2 by varying several parameters. The effect of the variation of the thicknesses of the hole transport layer (HTL), electron transport layer (ETL), absorber (perovskite) layer, acceptor dopant...

340. Phase Stability and Atomic Ordering in MnPt1-xRux Alloys: A Cluster Expansion and First-Principles Investigation

Thabang Kombesi

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

The design and development of advanced materials exhibiting high magnetic anisotropy, enhanced thermal stability, and strong mechanical robustness are essential for next-generation spintronic and data storage applications. L1₀-ordered MnPt is a promising rare-earth-free material due to its large magnetocrystalline anisotropy and strong spin polarization. Alloying MnPt with transition metals...

549. Phase stability and electronic properties study of Sc 6 As 2 B boride for high-temperature structural applications: Insights from First principles DFT

Bhila Oliver Mnisi

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

The distinctive structural, mechanical, phonon, and electronic properties of hexagonal compounds make them suitable for high‑temperature structural applications. The properties of Sc₆As₂B boride were investigated using first‑principles density functional theory (DFT) calculations. The calculated heat of formation of Sc₆As₂B boride is negative, confirming its thermodynamic stability....

214. Phase stability of Ga-Doped MnAl using a Cluster Expansion Approach

Mr Thabang Mokwena (University of Limpopo)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

L10 Mn50Al50 is a promising hard magnetic material due to its good magnetic properties such as high magnetic moment and high Curie temperature. It is considered the best candidate for use as a permanent magnet in various applications such as electric cars and wind turbines. However, L10 MnAl has drawbacks such as being brittle and thermodynamically unstable. A cluster expansion has been used...

435. Preliminary Experimental and Computational Investigation of Vacuum-Induced Outgassing in Poly(2,5)-benzimidazole Nanocomposites for Low Earth Orbit Applications

Ms Luwy Swanepoel (Centre for Space Research, North-West University, Potchefstroom Campus, Potchefstroom, 2531, South Africa)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Poly(2,5)-benzimidazole (ABPBI) is a high-performance polymer with potential applications in extreme environments such as low Earth orbit (LEO), where vacuum-induced degradation and outgassing are critical concerns. In this study, ABPBI-based nanocomposites incorporating multiwalled carbon nanotubes (MWCNTs), molybdenum disulfide (MoS2), and hexagonal boron nitride (h-BN) are investigated to...

253. Probing the Overabundance of X-type Asteroids Among Small Near-Earth Asteroids

Thobekile Ngwane (Stellenbosch University and South African Astronomical Observatory), Christine Margarete Steenkamp (Stellenbosch University, Physics Department)

08/07/2026, 16:20

Track D - Astrophysics & Space Science

Poster Presentation

Small near-Earth asteroids (diameter ≲150 m) represent the most numerous yet least characterised segment of potentially hazardous objects in our Solar System (Binzel et al., 2004). Their rapid fading after discovery limits follow-up opportunities, leaving gaps in our understanding of their compositional distribution. Here we present results from an ongoing robotic follow-up programme using the...

515. Pulse profiles of the RRAT J1819-1458

Kevin Rorke (University of South Africa)

08/07/2026, 16:20

Track D - Astrophysics & Space Science

Poster Presentation

Rotating Radio Transients (RRATS) are a class of pulsars that were identified in 2006 by McLaughlin et al. Unlike canonical pulsars, which are characterized by regular pulses that are detectable by Fourier transform periodicity searches, RRATs emit pulses sporadically and are best detected by single-pulse searches.
J1819-1458, a galactic RRAT with a dispersion measure (DM) of 196, is the...

481. Quantization of radiation-induced defects in SnO2 using positron lifetime components.

Ms Dineo Motjope (First author)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

In this work a two-component density functional theory is employed in the modelling of defects in ion and neutron-irradiated SnO2 using positrons as probes. Since defects are localized, the local density approximation (LDA) is used, which is part of DFT. Although LDA gives a good approximation of positron lifetimes and electron-positron annihilation momentum density, it does not consider the...

42. Rational Fabrication of p-n Co3O4 /Fe2O3 Heterojunction for Improved BTEX Gas Sensing

Mr Suggest Baloyi (University of the Free State)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Volatile organic compounds (VOCs), especially benzene, toluene, ethylbenzene, and xylene isomers (BTEX) are hazardous air pollutants that pose significant risks to human health and the environment, necessitating the development of highly sensitive and selective gas-sensing materials. In this study, Co3O4 and Fe2O3 semiconducting metal oxides (SMO) were synthesized via a microwave-assisted...

316. Refractory High-Entropy Silicide–Boride Compounds V₁₀Si₆B and V₅Si₃B for High-Temperature Structural Applications

Ibrahim Ali

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Refractory silicide–boride compounds have recently attracted significant attention as potential candidates for high-temperature structural applications beyond the operational limits of conventional Ni-based superalloys. In this study, we employ first-principles calculations to investigate the structural, electronic, mechanical, and dynamical properties of ternary intermetallic compounds, with...

74. Response of Topside Ionospheric Electron Density during Solar Flares

Kenny Monontsi (North-West University)

08/07/2026, 16:20

Track D - Astrophysics & Space Science

Poster Presentation

The ionosphere plays an important role in space weather phenomena and its understanding is important in High Frequency (HF) communications and navigation systems. However its response to sudden solar activity, e.g., solar flares, is still an area of ongoing research. In this work, we report for the first time the global statistical response of the ionospheric topside electron density to...

471. Solid-state synthesised Zn doped CdO nanoparticles for potential supercapacitor applications

Mpho Maswanganye (University of Limpopo)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Pristine CdO and Zn doped CdO nanoparticles have been prepared via solid-state method. A simple and cost-effective synthetic method where the precursors zinc acetate dehydration and cadmium acetate dehydration were mixed in ethanol. The X-ray diffraction (XRD) analysis indicated that the prepared samples were of a single crystalline cubic structure of CdO with the patterns observed to be...

89. Space-time light sculpturing by bound states in the continuum

Kelsey Everts (University of the Witwatersrand)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Oral Presentation

Recent nanotechnology and metasurface advancements have enabled ultraprecise light control, catalysing developments in energy conversion, sensing and imaging. Simultaneously, structuring light in space-time has opened new realms for exploring the physics of both fundamental and applied light-matter interactions. Unfortunately, conventional space-time light structuring methods require large,...

484. Structural and gas sensing properties of Co3O4 prepared by the Hydrorthemal method.

Prince Mkwae (University of Zululand)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Cobalt oxide (Co3O4) nanostructures were successfully synthesized by hydrothermal synthesis method using various solvents solutions. Physical and chemical properties of the as-synthesized nanostructures were examined using various characterization techniques such as scanning electron microscopy, X-ray diffraction, and UV-Vis spectroscopy to name the few. X-ray diffraction revealed that the...

493. STRUCTURAL AND THERMOLUMINESCENCE PROPERTIES OF ZINC TITANATE (ZnTiO3) NANOSTRUCTURES

Nolufundo Sintwa (Student)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Zinc titanate (ZnTiO3) nanostructures were synthesized by an eco-friendly sol-gel method using an ethanolic plant extract as a reducing and capping agent. The synthesized nanostructures were characterized using X-ray diffraction (XRD) and Raman spectroscopy, which confirmed the formation of the rhombohedral ZnTiO3 phase. Fourier Transform Infrared Spectroscopy (FTIR) confirmed the formation of...

21. Structure, Electron Spin Resonance and Magnetic Properties of Cr-Co Nanoferrite for Biomedical Applications

Metuel Dipuo Sethosa

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Chromium-substituted cobalt ferrite nanoparticles CoCrₓFe₂₋ₓO₄ (0 ≤ x ≤ 2.0) were successfully synthesized via the hydrothermal method. X-ray diffraction (XRD) patterns confirmed the formation of a single-phase cubic spinel structure. Crystallite sizes ranged from 6.6 to 13.7 nm, while lattice parameters decreased from 8.2603 to 8.1974 Å with increasing chromium content. SEM showed uniform...

397. Surface and electrical properties of high energy milled silicon nanoparticles

Nangamso Ndzamela (iYuniversity Walter Sisulu)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

This study examined the structural, chemical and electrical behaviour of silicon nanoparticles produced by high-energy milling, with the goal of understanding how milling conditions, material type and ageing influence their surface stability and electrical activity. The powders, derived from metallurgical and n-type silicon, consistently formed nanocrystalline particles with crystallite sizes...

175. Surface and electronic properties of LiTi2(PO4)3 as solid-state electrolyte: A DFT study

Leago Heaven Pitsa

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Surface and electronic properties of LiTi2(PO4)3 as solid-state electrolyte: A DFT study.

Leago Pitsa, kemeridge Malatji, Phuti Ngoepe, and Khomotso Maenetja

Materials Modelling Centre, University of Limpopo, Private Bag X1106, Sovenga, 0727, South Africa

Abstract.
Solid electrolytes are at the forefront of research for next-generation energy storage systems, offering enhanced...

343. Synergetic Effect of Rare-Earth (Ce) Doped on Gas Sensing Properties of Cobalt Nickel Ferrites Nanoparticles.

Mr Victor Sokhela (Student@University of Johannesburg)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

We present the effect of cerium(Ce3+) at various concentrations ranging from 1-5 wt%, doped in CoNiFe2O4 for the detection of LPG and H2S prepared by the Sol-gel method. X-ray Diffraction confirms the cubic phase of all the samples, and no impurities were detected with a crystallite size range of 8 to 11 nm. Scanning Electron Microscopy (SEM) and Electron Dispersive X-ray Spectroscopy (EDS)...

62. Synergistic Charge Transport and Defect Chemistry in SrTiO3/Ti3C2Tx MXene Composites for Low Temperature Toluene Sensing.

Nkosikhona Dlamini (University of the free state)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Detecting harmful aromatic volatile organic compounds (VOCs) such as toluene remains a major environmental and safety concern. In this work, SrTiO3 and SrTiO3/Ti3C2Tx MXene composite structures were prepared through a hydrothermal synthesis method, while Ti3C2Tx MXene was synthesized through the LiF-HCl etching. Detailed investigations were conducted to evaluate the structural and optical...

437. Synthesis and electron spin resonance study of MgxZn1-xAl0.4Fe1.6O4 nanocrystalline compounds

Nwabisa Mkhize

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

A series of MgxZn1-xAl0.4Fe1.6O4 (0 ≤ x ≤ 1.0) substituted mixed ferrites with fine particles (5.0 ≤ D ≤ 11.0 nm) were synthesized by glycol thermal technique. XRD data confirmed formation of single-phase cubic spinel structure with no impurity phases. XRD results were complemented by TEM analysis which showed nearly spherical images with narrow size particle distribution. Substitution of Zn...

183. Synthesis, structural, and photoluminescent properties of green emitted Eu2+ doped SrAl2O4 phosphor

Lethabile Masiu (Lethabile Masiu)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

SrAl2O4:Eu2+ is a well-known phosphor due to its strong green emission. The intense green emission makes SrAl2O4:Eu2+ an extremely interesting material for a broad range of applications, including emergency and safety lighting, anti-counterfeiting labels, roadway markings, and phosphor-coated bricks. This study investigates Eu2+-doped SrAl2O4 phosphors synthesized via the solid-state reaction...

311. The effect of Ni and Ru substitution on structural and mechanical properties of FCC Ir. A first-principles study

Mr Thabo Nhlakanipho Nhlenyama (University of Zululand)

08/07/2026, 16:20

Track G - Theoretical and Computational Physics

Poster Presentation

The structural stability of iridium-based alloys remains significant due to iridium's (Ir) outstanding high-temperature properties and corrosion resistance, particularly for aerospace and extreme-environment applications. However, the inherent brittleness of pure FCC Ir and its high cost limit its broader structural applications. This study employed first-principles calculations based on...

291. The effect of temperature on structural, and thermal properties of ZrTiVNbCr high entropy alloy

Ms Lebogang Motsomone (University of Limpopo)

08/07/2026, 16:20

Track G - Theoretical and Computational Physics

Poster Presentation

Refractory high entropy alloys (RHEAs) have emerged as promising candidates for the development of more effective hydrogen storage materials. This area is becoming increasingly important as the quest for sustainable and efficient energy solutions continues. However, no commercially available hydrogen storage material or system currently meets all the stringent ultimate Department of Energy...

312. The Heat Rate Kinetics on the Liquefied Gases During Sensing

Welcome Komana

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

This research presents the heat rate kinetics of liquefied petroleum gas (LPG) within the LPG sensing process using metal oxide semiconductors (MOS) based on MgCexFe₂₋ₓO₄ (x = 0, 0.1, 0.2, and 0.3). Much has been reported on the detection of LPG using MOS, and anomalies in gas sensing were observed in terms of the electrical current and the operating temperature. Oscillation/Variation were...

259. The real-time detection of H2S based on a CuO/CeO2 sensor

Ms Karabo Lurcender Bridgette Masilela

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Monitoring hydrogen sulfide (H2S) is vital for industrial safety and environmental systems, enabling the assessment of sulfur deposition, long-term impacts, and ecosystem stress. In this study, sensors made from CuO, CeO2, and their CuO/CeO2 heterostructure were hydrothermally synthesized and tested for gas detection performance against H2S. Multiple characterization techniques, such as X-ray...

412. Thermal Evolution of Structure and Morphology in Noble Metal-Doped TiO₂: A Comparative XRD and SEM Study of Au and Pt Stability and Phase Transformation Dynamics from 100 to 1100 °C

Olatunbosun Nubi (University of Limpopo)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Modification of titanium dioxide (TiO₂) with noble metals such as gold (Au) and platinum (Pt) is a primary strategy for enhancing its performance in photocatalysis, sensing, and energy conversion. However, a systematic comparative study of how these dopants influence the thermal evolution of TiO₂ across a wide range of temperatures remains limited. In this work, the influence of Au and Pt...

132. Thermal stability evaluation of hexagonal molybdenum diselenide

Mr Thapelo Lebopo (University of Limpopo), Prof. Thuto Mosuang (University of Limpopo)

08/07/2026, 16:20

Track G - Theoretical and Computational Physics

Poster Presentation

Thermal evolution and stability of hexagonal molybdenum diselenide were investigated using classical molecular dynamics simulations. Stillinger-Weber type potential parameters were considered for interatomic molybdenum–molybdenum, molybdenum-selenium, and selenium-selenium interactions. NPT Hoover thermodynamic ensemble was explored to check different energy-temperature variations. Radial...

377. Thermoluminescence and kinetic parameters of ErTaO4, synthesized by the solid-state reaction method

Dr Dumisani Mlotswa (Aspiring Physicist)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Near-infrared (NIR) luminescent materials play a vital role in photonic, optoelectronic, and biological applications. In this work, the ErTaO4 host was synthesized by a solid-state chemical reaction at 1200 °C for 4 h. X-ray diffraction (XRD) was used to confirm that the sample crystallized into a single phase, without impurities. Scanning electron microscopy (SEM) was used to confirm the...

451. Thermoluminescence of ajoite

Dr Bereket Dalga Dana (Rhodes University)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

The thermoluminescence of ajoite is reported. A glow curve measured at 1 °C/s after beta irradiation to 10 Gy shows a high-intensity peak at 76 °C (peak PI) and secondary peaks at 200, 280 and 340 °C (peaks PII-PIV). This study mainly concerns the high-intensity peak, peak PI, although some supplementary material on peak PII is included. The order of kinetics for peak PI was determined to be...

351. Topology and Electrical Properties of Printed Silicon Nanoparticle Networks

Mr Siphumliso Mbidana (Walter Sisulu University)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

This study investigates the relationship between the topology and electrical properties of printed silicon nanoparticle networks, focusing on how variations in cluster size and particle concentration influence charge transport. Silicon nanoparticles were produced via high-energy ball milling and separated into three cluster regimes, 25 μm, 50 μm, and 100 μm, each formulated into inks with...

302. Transport of Single Electrons on Superfluid Helium

Friedrich Voelcker (University of Cape Town)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Electrons trapped on the surface of liquid helium constitute one of the purest two-dimensional electron systems in nature, forming a clean, defect-free platform in which electrons are bound to the surface by their image charge and are free to move laterally with record high mobilities. This system has long been of fundamental interest for studies of two-dimensional physics and, more recently,...

326. Transport Properties Insights toward the Enhancement of Bulk LiTi₂(PO₄)₃ Solid-State Electrolyte Materials

Lisbon Maake (University of Limpopo)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

NASICON-type LiTi₂(PO₄)₃ is a promising solid electrolyte for all-solid-state lithium batteries due to its good thermal stability, structural durability, and three-dimensional lithium-ion conduction framework. However, its intrinsically low room-temperature ionic conductivity remains a major challenge for practical application. In this study, molecular dynamics simulations carried out with the...

410. Trends in Maximum and Minimum Temperatures in Vuwani: Insights from the Southern African Universities Radiometric Network

Muano Mbedzi (mutikimbedzi@gmail.com)

08/07/2026, 16:20

Track G - Theoretical and Computational Physics

Poster Presentation

This study investigates temporal trends and variability in maximum and minimum temperatures in Vuwani, South Africa, using observational data from the Southern African Universities Radiometric Network (SAURAN) spanning the period from April 2015 to December 2023. Understanding local-scale temperature dynamics is essential for assessing the impacts of climate change, particularly in...

411. Trends, Performance Gaps, and Systemic Inequalities in Physical Sciences Education in South Africa (2008–2023)

Nthangeni Rofhiwa (University Of Venda)

08/07/2026, 16:20

Track E - Physics for Development, Education and Outreach

Poster Presentation

This study presents a focused analysis of trends in Physical Sciences education in South Africa from 2008 to 2023, examining learner performance, systemic disparities, and post-school outcomes. Using national assessment data and higher education statistics, the study identifies a steady improvement in overall Grade 12 pass rates over time, particularly following curriculum reforms such as the...

386. Unravelling the adsorption behaviour of modified heterocyclic collectors on pyrite mineral surface

Prof. Peace Mkhonto (University of Limpopo)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Pyrite is an abundant mineral that is usually found in association with a number of base metal sulphide (BMSs) and understanding its interaction with collectors is key in unravelling its depression mechanism. This requires a highly selective collector to target and float the desired mineral, which is significant in designing collector molecules. The modification of collectors offers hope to...

460. Volatile Organic Compound Sensor Based on 2D NiO-WS2 Heterostructured Nanomaterials

Teboho Mokoena (University of the Free state)

08/07/2026, 16:20

Track A - Physics of Condensed Matter and Materials

Poster Presentation

Coal mine gas explosions represent one of the most catastrophic hazards in underground mining, ranking among the leading causes of mining fatalities worldwide and imposing severe economic burdens on coal-generating nations. Therefore, the detection of these volatile organic compounds (VOC) gases in the early stages is very significant for preventing catastrophic explosions in underground coal...