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sipho Chauke (Council for Scientific and Industrial research (CSIR))07/07/2026, 17:20Track C - PhotonicsPoster Presentation
Surface Plasmon Resonance (SPR) provides a label-free optical platform for the detection of biomolecular interactions. While highly sensitive, its accuracy can be compromised by non-specific binding, which introduces background interference and obscures target-specific signals, particularly on probe-functionalized surfaces. To address this challenge, the present study systematically...
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Cannimhambho Chewe07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
This study seeks to utilise both computational density functional theory (DFT) and micro-flotation experiments to understand the interaction of xanthates and dithiocarbamate with galena minerals under acidic and neutral conditions. The relaxed structural lattice parameters were recorded as a = b = c = 5.935 ร . The galena (100) surface was determined as the most stable surface and possessed a...
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Mr Tsholo Talane (UNISA, TUT)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Portable electronics, electric cars, and large-scale energy systems are becoming increasingly popular, creating a need to move towards energy storage technologies that can deliver both high energy and power densities quickly and reliably. Supercapacitors (SCs) have emerged as promising energy storage devices due to their fast charge/discharge capabilities, long cycling life, and environmental...
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Dr Edwin Mapasha, Owen Alfreds07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
The structural stability and mechanical properties of Janus monolayer transition metal carbidesulfides MSC (M=Zr, Hf, Ti) in the 1H phase are systematically investigated using first-principles calculations. Cohesive energy calculations reveal that the 1H phase is consistently more stable than the 1T phase across all three compounds, with energy differences ranging from 0.50 to 0.67 eV/atom,...
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Musa Maluleka (University of Venda)07/07/2026, 17:20Track F - Applied PhysicsPoster Presentation
Radiotherapy remains a cornerstone in the treatment of brain tumors; however, its
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effectiveness can be limited by intrinsic cellular resistance driven by TP53 mutations and
altered DNA repair capacity. MDM2 inhibitors such as AMG232 are designed to restore TP53
pathway activity, potentially enhancing radiosensitivity. Understanding how AMG232
influences DNA damage responses, cell-cycle... -
Dr Malesela Walter Makgoba (University of Limpopo)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
The adsorption of CH2O on the surface of GaN monolayer doped with Ru and Rh has been investigated using density functional theory. The Negative adsorption energies of -2.096 and -1.629 eV were attained for the adsorption of CH2O on GaN monolayer doped with Ru and Rh respectively, implying energetically stable systems. The more negative the adsorption energy, the more favourable and stronger...
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Lerato Raganya07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Accurate prediction of phase stability and mechanical compatibility is essential for developing metastable beta-type titanium alloys for orthopaedic applications. Current alloy design methods including molybdenum equivalence (Moeq), electron-to-atom ratio (e/a), bond orderโmetal d-orbital energy (BoโMd), and the cluster-plus-glue-atom model, when used independently, often produce inconsistent...
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Mr Kaveer Nagessar (University of Pretoria)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Bipolar Junction Transistors (BJTs) are fundamental semiconductor components utilized extensively for switching, amplification, and signal control in modern electronics. However, their electrical performance in high-radiation environments, such as space and nuclear facilities, is often compromised by degradation.
A 2N2907A pnp silicon BJT was subjected to electron irradiation under a...
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Mr Kgomotso Lefenya (University of Witwatersrand - Wits)07/07/2026, 17:20Track F - Applied PhysicsPoster Presentation
Prostate cancer is the second most prevalent malignancy that affects men globally and one of the curative approaches requires high-precision radiotherapy techniques. One of these recent and advanced techniques is volumetric modulated arc therapy (VMAT). This ensures accurate dose delivery whilst minimizing toxicity to the organs in proximity to the prostate, such as the rectum and bladder....
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Segoarihle Ntobeng (University of Limpopo)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Cobaltite (CoAsS) possesses a structure similar to that of pyrite, which facilitates the development of interatomic potentials for atomistic simulations based on previously derived pyrite models. This study employed the atomistic molecular dynamics simulation to investigate the effect of temperature on the structural and dynamic properties of bulk cobaltite. The developed model predicted a...
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Mofuti Mehlape (University of Limpopo)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Pyrite-type nanomaterials have attracted considerable attention due to their potential applications in energy materials, electrocatalysis, and photovoltaics. As Earth-abundant systems, their enhanced structural and dynamical properties arise from a high surface-to-volume ratio, necessitating a detailed understanding of their behaviour under varying conditions. In this study, molecular dynamics...
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Timothy Brooks (University of Johannesburg), Abdool Sattar Cassim (University of Johannesburg)07/07/2026, 17:20Track F - Applied PhysicsPoster Presentation
Within industries such as nuclear reactors and aerospace, working environments have extreme temperatures ranging from cryogenic operations below -$100\,^{\circ}\mathrm{C}$ to high heat at $300\,^{\circ}\mathrm{C}$. Fiber Bragg Grating (FBG) sensors with polyimide coating offer a promising solution due to their compact size, multiplexing capability, and resistance to signal degradation in high...
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Kyalo N Kiteme07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
In this work, a synthesized metal oxide Li3.5La 1.5 ZrO 6 (LLZO), a solid-state electrolyte, is characterized and studied to unveil its properties as an alternative to the liquid electrolyte currently used in lithium-ion batteries.
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Lithium-ion batteries suffer from the formation of dendrites (swelling) and overheating while being charged/ discharged, sometimes resulting in thermal... -
Ntuthuzelo Nqeketo (University of the Western Cape)07/07/2026, 17:20Track B - Nuclear, Particle and Radiation PhysicsPoster Presentation
The proposed Paarl African Underground Laboratory (PAUL) project has
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made significant progress toward the planning and design of an underground laboratory to be constructed during the upgrade of the Huguenot Road Tunnel near Paarl in the Western Cape, South Africa. While underground locations reduce cosmic-ray backgrounds, it is also important to understand radiation coming from the... -
Mr Khulekani Manqele (University of Zululand)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Silicon carbide (SiC) has been proposed as a primary coating layer within tri-structured isotropic (TRISO) fuel particles due to its unique properties. While TRISO particles successfully retained most FPs, the release of key radioactive elements such as strontium (Sr) remains a challenge, prompting numerous studies to understand their diffusion mechanisms in SiC. This study investigates the...
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Roy Mlambo (University of Venda)07/07/2026, 17:20Track F - Applied PhysicsPoster Presentation
Hydrogen is widely regarded as a promising green fuel due to its zero direct carbon emissions during use. Hydrogen has the highest energy content per unit mass, about 120 MJ/kg, but its volumetric energy density remains very low because of its low density at ambient conditions. This limitation makes hydrogen storage a major challenge for both stationary and onboard applications. This challenge...
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Carol Tlhaboloa (University of Limpopo)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
This study investigated the interaction between pyrite (FeSโ) mineral surfaces and xanthate and dithiocarbamate (DTC) collectors through a combination of computational Density functional theory (DFT) and microflotation experiments. Although pyrite is commonly regarded as a gangue mineral, its strong flotation tendency under conditions similar to valuable sulphides such as galena, chalcopyrite,...
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Mr Tshepiso Mogajana (University of Johannesburg)07/07/2026, 17:20Track F - Applied PhysicsPoster Presentation
The performance of greenhouse cultivation hinges on precise control of its internal microclimate, particularly under urban and variable climatic conditions. In this study, we used computational fluid dynamics to model the environmental conditions in a double-roof sawtooth greenhouse located at the University of Johannesburg. The temperature, pressure and humidity distributions in the...
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Marisana Masha (Cape Peninsula University of Technology)07/07/2026, 17:20Track F - Applied PhysicsPoster Presentation
The accelerating global transition toward clean energy demands sustainable pathways for hydrogen (H 2 ) production. Thermochemical conversion of lignocellulosic biomass through pyrolysis and reforming offers a promising, carbon-neutral route, yet reactor design remains a critical bottleneck limiting yield efficiency. This study presents a computational fluid dynamics (CFD) investigation into...
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bornwise mugwena (university of limpopo)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Lithium-air batteries are a promising solution for future energy storage due to their high energy density and environmental friendliness. However, their performance is limited by slow reaction kinetics at the cathode, particularly the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). Noble metals such as palladium (Pd), iridium (Ir), and osmium (Os) can enhance these...
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Ms Nontobeko Nondumiso Zavala (University of Limpopo)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
The milling of the violarite (NiFe2S4) mineral exposes different surface and as such there are few or one surface that dominates during the crushing. The thermodynamic stable surface is less reactive and is of importance for mineral extraction. Computational method can determine the most stable surface and the preferred cleavage either through reconstruction or perfect surface cleavage. The...
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Dieketseng Glara Tsotetsi (Department of Physics, University of South Africa, Johannesburg, 1710, South Africa.)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
In this study, optimizing caffeine concentrations (2%, 4%, 6%, and 8%) in MAPbI3 using a graphite electrode under acidic conditions, analysing both electrocatalytic (EC) and photoelectrocatalytic (PEC) processes was investigated. The catalyst made from Graphite and MAPbI3 with 2% caffeine shows superior performance compared to the other catalysts, particularly in the dynamic electrocatalytic...
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Kelsey Everts (University of the Witwatersrand)07/07/2026, 17:20Track C - PhotonicsPoster Presentation
Systematic studies of lightโs propagation through media with spatially varying refractive indices are key to advances in imaging biological tissues, opaque materials and communication through foggy conditions. Laboratory studies typically employ white paint, emulsions or tissue-mimicking phantoms which are difficult to identically reproduce, simulate and often have complex time-consuming...
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Ms ANDI ISNI PUJIRANA (NELSON MANDELA UNIVERSITY)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Abstract
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Homoepitaxial undoped n-type GaAs layers were grown by metal-organic vapour phase epitaxy (MOVPE) on semi-insulating and nโบ GaAs substrates at growth temperatures ranging from 550 ยฐC to 675 ยฐC. Growth was carried out using an unconventional precursor combination of triethylgallium (TEGa) and tertiarybutylarsine (TBAs), in contrast to the more commonly employed trimethylgallium and... -
Ms RAMOKONE CHRISTINA MALINDISA (University of the Free State)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Liquefied petroleum gas (LPG) is widely used in our daily lives as an alternative fuel for cooking and various industries. The LPG contains a mixture of propane and butane. On the other hand, they possess flammable and explosive properties. The December 2022 incident in Boksburg, South Africa, involving an LPG tanker poses a significant threat to infrastructure, public safety, and the...
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Mr Mbongeni Mncube (University of Kwazulu-Natal)07/07/2026, 17:20Track F - Applied PhysicsPoster Presentation
Triggered false alarms are one of the biggest problems for smoke detection systems. Cloud movement in the sky, cloud reflections on hills, cars, animals eating, and trees moving about in a forest can easily trigger a false alarm. This poses a critical issue because forest wildfires are constantly on the rise. This affects the global economy substantially and forest ecosystem, therefore...
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Mr Keamogetswe Motiang (Northwest university)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Zinc sulphide (ZnS) has been widely utilized in solar cells as a buffer layer or light scatterers due to its excellent chemical and physical. Zinc sulphide nanoparticles (NPs) were characterised using UV-Vis spectroscopy to determine their energy band gap. The absorption spectra were obtained in the wavelength range 300 โ 800 nm. The absorption spectra showed maximum absorption just below 300...
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Vuako Maluleke (University of Venda, iThemba LABS)07/07/2026, 17:20Track B - Nuclear, Particle and Radiation PhysicsPoster Presentation
Automated gamma-ray spectrometry is a modern analytical technique used for radionuclide identification and quantification in environmental, industrial, and nuclear applications. This study presents the development and optimization of an automated gamma-ray spectrometry system using a high-resolution detector and advanced software for real-time spectral acquisition and analysis. Automated...
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Mpho Gololo (University of Johannesburg)07/07/2026, 17:20Track F - Applied PhysicsPoster Presentation
The High-Luminosity Large Hadron Collider (HL-LHC) upgrade places stringent performance and reliability requirements on the ATLAS Tile Calorimeter (TileCal) readout circuits. A crucial component of this upgrade is the Tile Pre-Processor (TilePPr), a part of the off-detector electronics in charge of data processing, control, and communication. As part of the Phase-II upgrade, crucial TilePPr...
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Motlatso Phooko (University of Venda)07/07/2026, 17:20Track F - Applied PhysicsPoster Presentation
Refractory high-entropy alloys such as NbMoTaW are promising materials for hydrogen storage applications because of their strong crystal structure and stability, inspiring trust in their potential for energy solutions. In this study, density functional theory (DFT) calculations were performed using the CASTEP module in Materials Studio to investigate hydrogen behavior within NbMoTaW. Hydrogen...
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Mudimeli Vusani Mangalani (University Of Venda)07/07/2026, 17:20Track F - Applied PhysicsPoster Presentation
Refractory high-entropy alloys (RHEAs) are strong, stable materials useful for hydrogen energy applications. In this study, the interface between RHEAs and carbon nanotubes (CNTs) was investigated using Density Functional Theory (DFT) calculations. The calculations were performed in Materials Studio using the CASTEP module, with the GGA-PBE functional. Interface models were constructed by...
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Tshifhiwa Ranwaha (University Of Venda)07/07/2026, 17:20Track F - Applied PhysicsPoster Presentation
The performance of reinforced refractory high-entropy alloys (RHEAs) depends on the stability of the interface between the alloy and the reinforcement. In this study, Density Functional Theory (DFT) using the CASTEP module in Materials Studio was used to investigate the interface between NbMoTaW and titanium diboride (TiBโ), emphasizing the strong bonding that ensures durability. Interface...
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Mr Johannes Hermanus Spies (University of the Free State)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
The use of lenses and specular reflecting surfaces (mirrors) to direct light in optical instruments is commonplace. However, light may also be directed within a closed hollow volume having diffuse internal reflecting surfaces and a small exit hole โ if the volume is round, this is called an integrating sphere. This is a critical component in the homogenisation of light and used when...
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Thato Manyama (University of Limpopo)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Impurities such as iron (Fe), copper (Cu) and manganese (Mn) are often present in sphalerite (ZnS) mineral. These impurities significantly influence the properties of ZnS. This study investigated the effect of Cu, Fe and Mn content on the structural properties of the bulk and surface structures of ZnS using density functional theory with dispersion correction and Hubbard U (DFT-D+U). This...
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Modjadji Rebecca Letsoalo (University of Witwatersrand)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
The advancement of efficient and economical solar technology continues to be a key challenge in sustainable energy research. Dye-sensitized solar cells (DSSCs) present a feasible alternative to traditional solar technologies, however their effectiveness is predominantly limited by the characteristics of photoanode materials. This study experimentally investigated Fe/Cu/Co-doped Zn2SnO4...
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Dr Bradley Nemutudi (University of Limpopo)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
The interactions of organic collectors with mineral surfaces are the major factors that determines the floatability behaviour of minerals during flotation process. This study employed the computational density functional theory with dispersion correction (DFT-D3) method to investigate the adsorption performance of normal butyl xanthate (NBX), normal butyl dithiocarbamate (NBDTC) and the novel...
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Fokotsa Molefe (North-West University)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Numerous solution-based deposition methods, such as spin-coating and spray pyrolysis, are commonly used for depositing metal-oxide semiconductors, such as SnO2, TiO2, and ZnO for solid-state optoelectronic devices like sensors and photovoltaics. In this contribution, the effect of substrate temperature (Ts) on the structural, morphological, and optical properties of ZnO thin films deposited...
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Pulane Moleme (UFS)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Y2SiO5 is thermally stable material with favourable optical properties, making it an excellent host for rare-earth dopants. Rare-earth doped Y2SiO5 exhibits narrow optical and spin linewidths, suitable for high-precision optical and quantum applications. Thin films of rare-earth doped Y2SiO5 are attractive due to their compatibility with modern photonic device fabrication. They preserve the...
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Mr Caleb Hlebela (Tshwane University of Technology)07/07/2026, 17:20Track F - Applied PhysicsPoster Presentation
This work presents investigation of the structural, electrical, and stability characteristics of two spin coating fabricated InP-based thin-film solar cell architectures: the baseline Ag/InP/TiOโ/ITO/Glass configuration and a modified multilayer design incorporating Ag nanowires embedded in PMMA, a semiconducting VOโ optical modulation layer, TiOโ, and ITO. Electrical performance under...
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Lungisani Phakathi (University of Witwatersrand)07/07/2026, 17:20Track B - Nuclear, Particle and Radiation PhysicsPoster Presentation
The Phase-II upgrade of the ATLAS Tile Calorimeter requires a reliable Low Voltage Power Supply (LVPS) system capable of stable operation under High-Luminosity Large Hadron Collider (HL-LHC) conditions. As part of the production quality assurance chain, a single-brick test bench has been upgraded to perform initial functional validation of LVPS converter boards prior to burn-in and...
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SAMWEL OPIYO (UNIVERSITY OF SOUTH AFRICA(UNISA))07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
This study evaluates how nitrogen doping introduced from various precursors tune the structure of graphene oxide(GO) nanomaterial (NM) and its role in enhancing biohydrogen(bioH2) production from sugarcane bagasse(SCB). This is a great step towards generation of carbon free energy through valorization of wastes(SCB). GO was synthesized using Modified Hammerโs method while the N doping was...
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BOIKETLO THAMAGA07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
MXenes are 2D materials which are rapidly emerging as next-generation materials for high-performance gas sensors due to their distinctive features: exceptional conductivity, modifiable surface characteristics, tweakable energy band gap, and more active sites [1]. Recent advancements have concentrated on enhancing their sensing capabilities, selectivity, and response/recovery durations. To...
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RANTSOTLHE MPHO (University of Pretoria, Department of Physics)07/07/2026, 17:20Track F - Applied PhysicsPoster Presentation
Ti3C2:CuO quantum dot composites with different mass ratios (1:0.5, 1:1, and 1:2) were successfully synthesized by hydrofluoric acid etching of Ti3AlC2 (MAX phase) to obtain TiโCโ MXene, followed by sonication-assisted intercalation of CuO quantum dots. The incorporation of CuO quantum dots effectively suppressed MXene restacking, improved ion accessibility, and introduced additional...
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Lesole Ramolise (University of the Free State)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
We demonstrate the controlled synthesis and in depth characterization of Y0.99VO4:0.01Bi3+ nanophosphors engineered with tunable surface decoration of Ag and Pd nanoparticles. X-ray powder diffraction analysis showed that all compositions crystallized in the tetragonal YVO4 phase, while the high-resolution field emission scanning electron microscopy revealed that the phosphors comprise...
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Luleka Menzi (Unisa)07/07/2026, 17:20Track F - Applied PhysicsPoster Presentation
South Africa has an estimated 3.5โ4 GW generated in 2025 with a projection of over 69 GW by 2050 [1]. More sites are needed in order to reach the target set of energy generated only through wind. Weather data of six months (January- June) was analyzed. Weather data of Port Edward (Longitude: 31.0670; Latitude: 30.2330), in the eastern coastline of South Africa, was provided by the South...
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Calvin Groenewald (Stellenbosch University)07/07/2026, 17:20Track C - PhotonicsPoster Presentation
Quantitative Phase Imaging (QPI) methods that rely on polarization optics, such as Single-Shot Optical Quadrature Microscopy (SSOQM), offer high-speed, label-free phase measurements but are fundamentally challenged by birefringent samples.
In anisotropic media, phase retardance and polarization-dependent transmission violate the scalar phase assumption and strongly couple phase to...
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Tondani Mahuluhulu (University of Johannesburg)07/07/2026, 17:20Track F - Applied PhysicsPoster Presentation
Organicโinorganic hybrid (OIH) materials have gained considerable attention due to their structural versatility and potential applications in photovoltaic and optoelectronic devices. However, the dominance of lead-based systems raises concerns about toxicity and environmental stability, underscoring the need for alternative lead-free hybrids. This study delves into the structural versatility...
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231. Exploring Sodium-Doped Li2MnO3@Li0.69MnO2 Core-Shell Cathodes for Enhanced Structural StabilityMukhethwa Netshiovhani (University of limpopo)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Lithium-rich layered oxide Li2MnO3 is a promising cathode material for high-performance lithium-ion batteries, with a theoretical capacity of 460 mAh g-1. However, Li2MnO3 suffers from structural instability, oxygen evolution, and degradation during repeated cycling, leading to capacity loss. Coreโshell nanostructures have emerged as an effective strategy to preserve structural integrity,...
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Craig Bekeur (University of Pretoria)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Expanding on previous results, we consider the structural integrity and behaviour of monolayer tin disulfide (SnS$_2$). With the introduction of S- and Sn-vacancies, the substrate displayed strengthened bond energies, while also introducing significant diffusion barriers allowing for effective adatom channelling. SnS$_2$ showed promise as an anode material for Na battery technology, with the...
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Ms Abongile Gingqi (Student)07/07/2026, 17:20Track F - Applied PhysicsPoster Presentation
The growing demand for renewable energy drives interest in biodiesel as a sustainable alternative to fossil fuels. In this study, waste cooking oil (WCO), an abundant and low-cost feedstock, was converted into biodiesel through esterification and transesterification using a bifunctional heterogeneous catalyst. The catalysts were synthesised by incorporating acidic (CuO) and basic (CaO) active...
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Tshepo Ntsoane (The South African Nuclear Energy Corporation)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Plasma-sprayed hydroxyapatite (HAp) coatings are widely used to enhance the bioactivity and osseointegration of metallic implants however, their long-term performance under cyclic loading in physiological environments remains a critical concern [1]. In this study, HAp coatings were deposited via plasma spraying [2] onto cylindrical rod Ti64 substrates (5 mm diameter) and subjected to...
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Lutendo Phuthu07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Thermochromic smart windows based on vanadium dioxide (VOโ) offer energy-saving potential through temperature-dependent solar modulation, but their high transition temperature and limited efficiency remain challenges. This study investigates hybrid heterostructures combining graphene with tungsten-doped vanadium dioxide (W-VOโ) to improve performance.
First-principles calculations using...
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Percy Ngobeni07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
The transition toward cleaner energy systems has intensified interest in advanced storage technologies such as zinc-air batteries (ZABs). Although ZABs offer high energy density and cost effectiveness, their performance is limited by sluggish air cathode kinetics. In this study, density functional theory (DFT) is used to investigate the adsorption behaviour and charge transfer characteristics...
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Ms Evonne Tshepiso Molekoa Tshepiso07/07/2026, 17:20Track F - Applied PhysicsPoster Presentation
Abstract
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As the world shifts towards green energy and sustainable living, the need for renewable energy sources is steadily rising. This study investigates the potential of eggshell membrane (ESM) as a sustainable precursor for activated carbon in hybrid solar cell applications. ESM-derived activated carbon was synthesized via pyrolysis at 600 ยฐC under ambient and nitrogen atmospheres. The... -
Thokozani Mpanza (University of Zululand)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
The cobalt tungstate (CoWO4) nanostructures were prepared using the hydrothermal method. Nanostructures were annealed to compare the structural, optical and gas sensing properties of annealed and unannealed CoWO4. The UV-VIS spectroscopy, x-ray diffraction (XRD), scanning electron micro-scope (SEM) and energy dispersive x-ray spectroscopy (EDS) were used to examine the samples optical,...
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Mr Tshepang Pule (University of the Witwatersrand, Johannesburg, Wits 2050, South Africa)07/07/2026, 17:20Track B - Nuclear, Particle and Radiation PhysicsPoster Presentation
High-energy physics (HEP) experiments operate in data-intensive environments
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characterised by high event rates, complex detector systems, and the need to
extract rare signals from substantial backgrounds. This has led to the
development of robust methodologies for data acquisition, event selection,
statistical inference, and real-time data processing, particularly within
large-scale... -
Mvuyisi Mbabane (Walter Sisulu University)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
This study investigates the charge transport properties of printed silicon nanoparticle networks prepared from high-energy milled silicon. Hall effect measurements, complemented by X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), and DC resistance measurements, were used to examine the influence of milling...
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Qiniso Nkomo (UNISA)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Titania (TiO2) nanoparticles were synthesized by the co-precipitation method. The influence of different phases of TiO2 electrocatalysts was investigated on the electrochemical hydrogen evolution reaction. The XRPD results confirmed the formation of anatase, anatase-rutile, rutile-anatase, and rutile phases at calcination temperatures of 25, 350, 450, and 550 โ. The average crystallite size...
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Mamonamane Mphahlele (University of Limpopo)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Layered LiNiO2 (LNO) is a promising cathode material for lithium-ion batteries due to its high theoretical capacity and potential for reduced reliance on costly cobalt; however, its structural evolution during phase transformations critically influences performance. In this study, atomistic simulations were employed to investigate the effects of Mn and Co doping on the...
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Dr Armstrong Anonaba (Abia State University, Uturu)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
This study was designed to assess the practicability of modifying the properties of plaster of Paris (POP) ceiling to improve its durability and use in thermal insulation.Using plaster of Paris (POP) in buildings has generated health concerns; hence reinforcement has been made possible by adding oil palm mesocarp fibre (OPMF). Various weight proportions(0, 10,20,30 and 40%) of the OPMF were...
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Mr Sabelo Ndlela (University of Johannesburg)07/07/2026, 17:20Track C - PhotonicsPoster Presentation
Abstract
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Series of Gd3+ doped alkaline earth octaborate phosphors with the general formula MxBa1-xBโOโโ: 2% Gdยณโบ (M = Caยฒโบ, Mgยฒโบ; x = 0.10) were synthesized through a solid state method to investigate the influence of alkaline earth ions on the structural, optical, and luminescence properties of the BaB8O13 host material. X-ray diffraction (XRD) confirmed the formation of orthorhombic... -
Japhtalinah Lehutso (Department of Physics, CSET, University of South Africa, Johannesburg, 1710, South Africa)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Titanium dioxide (TiOโ) has attracted considerable attention as a promising material for catalytic applications due to its chemical stability, low cost, and tunable structural properties. In this study, two distinct TiO2 morphologies, namely spherical and mesoporous structures, were synthesized via a sol-gel method using titanium isopropoxide (TTIP) as the precursor. Polyvinylpyrrolidone (PVP)...
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Le Roi Du Plessis (Stellenbosch University)07/07/2026, 17:20Track C - PhotonicsPoster Presentation
Optical tweezers are a sterile, non-invasive method for the isolating and manipulating single cells in suspension. When combined with microfluidic sample chambers it is possible to control the local environment of a trapped cell. This control over the extracellular environment of individual cells, allows one to monitor changes in cellular activity and cell morphology due to changes in the...
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480. Investigation of X-rays and Gamma ray Shielding Properties of Heavy Metal Oxide Glass MaterialsNosihle Msabala (University of Zululand)07/07/2026, 17:20Track B - Nuclear, Particle and Radiation PhysicsPoster Presentation
This study investigates neodymium-doped bismuth borosilicate glasses with composition xBiโOโ-(55-x)BโOโ-15BaO-10ZnO-18SiOโ-2NdโOโ (x = 15, 20, 25 mol%) as lead-free radiation shielding materials for diagnostic X-ray applications. Three glass samples were successfully synthesized via melt-quenching at 1000ยฐC. Structural characterization confirmed complete amorphization, and density measurements...
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Mr Tshepang Pule (School of Physics and Institute for Collider Particle Physics, University of the Witwatersrand, Johannesburg, Wits 2050, South Africa)07/07/2026, 17:20Track F - Applied PhysicsPoster Presentation
Air pollution poses a severe and growing public health challenge globally, with the World Health Organization estimating approximately 4.2 million premature deaths annually attributable to ambient air pollution.
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Traditional monitoring infrastructure comprised of large, fixed reference
stations is costly, spatially sparse, and incapable of real-time,
high-resolution pollution mapping. This... -
106. Jet Response and Resolution Studies of the ATLAS TileCal Upgrade Geometry for HL-LHC ConditionsEdward Nkadimeng (NRF-iThemba LABS)07/07/2026, 17:20Track B - Nuclear, Particle and Radiation PhysicsPoster Presentation
The Phase-II upgrade of the ATLAS Tile Calorimeter (TileCal) is designed to maintain detector performance under High-Luminosity Large Hadron Collider (HL-LHC) conditions, where up to 200 protonโproton interactions per bunch crossing are expected. This study evaluates the impact of the upgraded detector geometry on jet reconstruction performance using Monte Carlo simulated QCD dijet samples....
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Modicai Samukelo Mndebele07/07/2026, 17:20Track B - Nuclear, Particle and Radiation PhysicsPoster Presentation
The spatial distribution of naturally occurring radionuclides (โดโฐK, ยฒยณยฒTh, and ยฒยณโธU) at Sparkle Bay, Western Cape can be investigated with an integrated approach using UAV-based gamma-ray spectrometry, least-squares optimisation, and Geographic Information Systems (GIS). The airborne gamma-ray data were obtained with a sodium iodide (NaI(Tl)) detector attached to an unmanned aerial vehicle...
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Boitumelo Tladi (University of Free State)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
The development of highly sensitive gas sensors that do not require elevated operating temperatures remains critical for the safe detection of liquefied petroleum gas (LPG). Nickel cobaltite (NiCo2O4) is a p-type bimetallic oxide that has been extensively studied for the detection of volatile organic compounds, although its potential for LPG detection has received limited attention....
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Aaron Malape (University of the Free State)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Cerium oxide (CeO2) nanomaterials are being studied as potential candidates for gas sensors. Gas sensors based on metal oxides and their nanocomposites have attracted significant public attention over the past decades due to their excellent potential for applications in environmental pollution remediation, the transportation industry, and personal safety. Thus, herein, CeO2 nanostructured...
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SAM MKHWEBANE07/07/2026, 17:20Track F - Applied PhysicsPoster Presentation
Abstract
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In the era of Industry 4.0, the transition toward fully autonomous man
ufacturing requires robust Tool Condition Monitoring (TCM) to prevent
catastrophic tool failure and workpiece damage. Precise prediction of cut
ting tool wear and remaining useful life (RUL) is necessary for reducing
downtime and optimizing tool usage in automated machining. However,
manual inspection... -
Matthew Marlor (Stellenbosch University)07/07/2026, 17:20Track C - PhotonicsPoster Presentation
Fluorescence correlation spectroscopy (FCS) is a technique in which a focused laser beam excites molecules within a small volume and fluctuations in the emitted fluorescence are analysed to extract information about molecular dynamics. These fluctuations arise from stochastic processes such as diffusion, photophysical transitions, and chemical kinetics, and are quantified through the...
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Malili Matshaba (CPhy Membership)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
The study analyses the temperature-dependent behaviour of gold (Au) and lead (Pb) nanomaterials using classical Molecular Dynamics (MD) simulations in the NPT ensemble, utilizing the Sutton-Chen potential. The primary objective is to determine the effect of temperature on the structural properties, thermal stability and energy of different cluster sizes (459, 791 and 1061 atoms). The results...
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Donald Ngobeni07/07/2026, 17:20Track F - Applied PhysicsPoster Presentation
Air pollution remains a serious environmental and public health challenge, creating a strong need for accurate, affordable, and real-time monitoring systems, especially in developing contexts such as South Africa. Recent studies show that smart air quality monitoring can be significantly improved through the integration of low-cost sensor networks, machine learning, and environmental data...
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Tshepiso Thompson Rauwane (student)07/07/2026, 17:20Track B - Nuclear, Particle and Radiation PhysicsPoster Presentation
Neutron Transmutation Doping (NTD)
This area explores the technique of using nuclear reactors to modify the electrical properties of semiconductor materials, particularly silicon, for high-performance electronic components. The project aims to optimize the neutron transmutation doping process at the Nuclear Energy Corporation of South Africa (NECSA) SAFARI-1 research reactor, focusing on...
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Beauty Shibiri (University of Limpopo)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Spinel-structured materials such as lithium cobalt oxide (LiCoโOโ) and lithium manganese oxide (LiMnโOโ) are promising cathode materials for lithium-ion batteries due to their good electrochemical performance, which is attributed to their three-dimensional lithium-ion diffusion pathways. However, these materials undergo high voltage and capacity decay during cycling. This is caused by...
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Mr Thapelo Mafabatho07/07/2026, 17:20Track B - Nuclear, Particle and Radiation PhysicsPoster Presentation
Accurate quantification of naturally occurring radionuclides such as thorium (Th), potassium (K) and uranium (U) is essential for environmental monitoring, mineral exploration and radiological assessment. This study focuses on the optimisation of radionuclide measurement by comparing in situ gamma spectrometry data with laboratory-based inductively coupled plasma mass spectrometry (ICP-MS)...
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Caitlin van Wyk07/07/2026, 17:20Track C - PhotonicsPoster Presentation
Fibre optics enables the transmission of light through total internal reflection and underpins modern telecommunication systems. For efficient optical signal amplification over long distances, fibres are usually directly doped with luminescent ions and pumped with laser diodes. While this approach is simple, currently there is a lack of cost-effective and efficient fibre amplifiers operating...
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Nicholas Onkoba (UNISA)07/07/2026, 17:20Track F - Applied PhysicsPoster Presentation
Titanium oxide is a promising corrosion-resistant catalyst support for the oxygen reduction reaction (ORR) in proton exchange membrane (PEM) fuel cells; however, its low electrical conductivity and wide band-gap limits performance. In this work, titanium oxynitride materials were synthesized via two routes: a solโgel method followed by thermal nitridation at 650 ยฐC, and a hydrothermal...
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Mr Kelvin Matamela (University of Johannesburg)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Nanocrystalline diamond has attracted significant attention as a protective material for extreme environments due to its exceptional hardness, high thermal conductivity, chemical stability, and radiation resistance. However, exposure to high-energy radiation can induce lattice defects in diamondโsuch as vacancies, interstitials, and substitutional defectsโthat may alter its structural and...
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Mubarak Yagoub (University of Johannesburg)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Nanomaterials have recently attracted increased attention due to their use in many applications, including solar energy conversion, sensors, transparent electrodes, and catalysis. The grain size of these materials plays a crucial role in determining their optical properties. Size-dependent nanomaterials have various potential applications in optoelectronics, color displays, lasers, biological...
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Mahlatse komape (UNIVERSITY OF LIMPOPO), Dr Thomas Malwela07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
The agricultural sector is a key component of the global economy. Driven by human demand for quality agricultural products, the use of nitrogen fertilizer (N-fertilizer) grows rapidly due to an increased need for dietary protein, including animal protein. Nitrogen is one of the significant indicators of soil fertility and crop growth conditions. Hence, monitoring the concentration of nitrogen...
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Yugesh Singh Thakur (Department of Physics, University of the Free State (UFS), Bloemfontein, ZA 9300, South Africa)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Bismuth oxychloride (BiOCl) is a promising electrode material for energy storage due to its layered structure and redox activity; however, its low intrinsic electrical conductivity and pronounced potential drop limit practical performance. In this work, a conducting polymerโbased modification strategy is anticipated, in which polypyrrole (PPy) is incorporated into BiOCl to enhance...
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Ms Pashlene Naidoo (University of Witswatersrand)07/07/2026, 17:20Track C - PhotonicsPoster Presentation
Quantum entanglement remains the fundamental cornerstone of modern quantum
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information protocols, including quantum cryptography, computing, and communication.
Despite this, there are very few quantum entanglement setups available in Africa. Here, we
show how to set up a quantum experiment and verify quantum entanglement to estimate the
properties of quantum states using quantum state... -
Zamaswazi Tshabalala (University of the Free State)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Nitrogen oxides (NOx) are among the most hazardous air pollutants emitted from combustion processes in mining, industrial, and transportation sectors, posing severe risks to human health and atmospheric quality. The development of semiconductor based gas sensors that combine high sensitivity with low power consumption remains a critical challenge. In this study, Pd-sensitized Co3O4/NiTiO3...
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Nikisha Baboolal (University of the Witwatersrand)07/07/2026, 17:20Track F - Applied PhysicsPoster Presentation
Deformable mirrors are a type of optical element with a reflective surface that can change shape, through different mechanisms. These devices allow for adaptive control of reflected wavefronts offering a method for real-time aberration correction. For this reason, deformable mirrors have a wide range of optical applications from correcting for distortions due to atmospheric turbulence in...
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Mpilo Dlamini (North-West University)07/07/2026, 17:20Track F - Applied PhysicsPoster Presentation
Over the past two decades, there has been a significant progress in incorporating inorganic nanofillers into polymer blends, leading to enhanced performance of organic photovoltaic (OPV) devices. In this work, Poly(3-hexylthiophene-2,5-diyl):phenyl-C61-butyric-acid methyl-ester (P3HT:PCBM) photoactive layer blend was doped with 1, 3, and 5 wt% of ZnO:Ag nanoparticles (NPs). The ZnO:Ag NPs were...
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Thakgalo Mangena (Mr Thakgalo Mangena, University of Stellenbosch Physics Department)07/07/2026, 17:20Track C - PhotonicsPoster Presentation
Theranostics approach in TRNT (Targeted Radionuclide Therapy) have gained interest as an alternative method to chemotherapy for their effectiveness in combining imaging and treatment for cancer. Theranostics involves using the same targeting molecule with different radioactive isotopes for a well monitored TRNT. Two useful isotopes in TRNT are terbium Tb-149 and actinium Ac-225. This study...
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Dr Jean Jules Mboukam (Tshwane University of Technology)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
The sputtering behaviour of CaFโ thin films produced on Si and graphite substrates was studied in this paper. The study seeks to clarify the role of substrate material, specifically conductive versus semiconductive and structurally different surfaces, on the sputtering yield and surface modification of CaFโ. Thin films of CaFโ were deposited on both substrates using an e-beamย deposition method...
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Prince Phathizwe Majozi (UNIZULU)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Nanocrystalline CuxMn1-xFe2O4 (0 โค x โค 0.8) ferrites with particle sizes in the range of approximately 8-22 nm were synthesized via a low-temperature glycol-thermal route and systematically investigated for their structural and magnetic properties. X-ray diffraction confirmed the formation of a single-phase cubic spinel structure. The lattice parameter decreased monotonically from 8.506 ร to...
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Saheed Omotosho Yissah (University of Johannesburg)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Rare-earth titanate pyrochlores of the general formula RโTiโOโ have attracted considerable interest owing to their flexible structural chemistry and multifunctional physical properties. In this work, dysprosium titanate (DyโTiโOโ) and samarium titanate (SmโTiโOโ) were successfully synthesized using the sol-gel method and subsequently calcined at 1000 0C to obtain phase-pure pyrochlore samples....
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Chidiebere Ekwomadu (north west university)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Carbonate reservoirs account for a substantial share of global hydrocarbon reserves and are increasingly relevant for subsurface energy applications such as carbon capture and storage, geothermal exploitation, and hydrogen storage. Their potential lies in large pore volumes, dual porosity systems, and complex fracture networks that can enhance fluid storage and transmission. However, these...
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Redrisse Djoumessi Fobasso (University of Johannesburg)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
The magnetic behaviour of Gd is amongst those that exhibit the most striking characteristics. It is among the few elements capable of changing its magnetic characteristics from ferromagnetism at ambient temperatures to paramagnetism at a comparatively low temperature, that is, at around 20ยฐC. This capacity to change its magnetic characteristics is crucial for application in magnetic...
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Delicacy Ntshalintshali (University of the Free State - Qwaqwa Campus)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Research on phosphor materials has gained prominence due to the prospective applications of rare-earth (REยณโบ) ion-activated phosphors in sensors, displays, and lighting. This study presents the synthesis of novel red light-emitting Prยณโบ-doped LaโZnTiOโ nanophosphors using a citric acid-assisted method. This study systematically investigated how varying Prยณโบ doping concentrations (0 โค x โค 4.0)...
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Mr Lekgolo Maebana (University of free state)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Nitrogen dioxide (NO2) is a very hazardous gas to human health that requires specialized detection at low temperatures for environmental monitoring. This study investigated synthesized rare-earth (RE)-doped CuO/ZrO2 p-n heterostructures doped with various concentrations (0.5-1%) of Ho3โบ and Yb3โบ ions via a hydrolysis process and their applications for gas sensing. X-ray powder diffraction...
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Mr IRENEE BRICE MOUADJE MOUADJE (University of Johannesburg)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
A theoretical investigation of electronic and magnetic properties of La2NiRuO6 is studied through density functional theory (DFT) using plane augmented wave method and Monte Carlo simulations. Spin-polarized first-principles calculations are carried out within the DFT+U framework to properly account for electronic correlations associated with the Ni-3d and Ru-4d states. The analysis of the...
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Mr Happy Vilakazi (UNISA)07/07/2026, 17:20Track B - Nuclear, Particle and Radiation PhysicsPoster Presentation
Weakly bound and halo nuclei, with low binding energies and extended spatial distributions, provide a unique testing ground for nuclear forces and reaction dynamics. Despite lot of studies done on this, unresolved questions remain regarding breakup mechanismsโparticularly whether projectiles dissociate on incoming or outgoing trajectories at deep sub-barrier energies ( [1 - 2]). This research...
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Vuako Maluleke (University of Venda, iThemba LABS)07/07/2026, 17:20Track F - Applied PhysicsPoster Presentation
Financial physics, also known as econophysics, applies concepts from statistical mechanics and complex systems theory to financial markets. This study investigates whether super-diffusive scaling of price trajectories can serve as a quantitative precursor to market crashes, drawing an analogy with charged particle tracking detectors.
In high-energy particle detectors, the mean square...
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Dr sandeep eswaran panchu (university of the free state)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Single-component white light phosphors with high thermal stability and balanced photometric properties are essential for next-generation solid-state lighting. In this work, Dy3+-activated SrGd2O4 phosphors were successfully synthesized using a hydrothermal method followed by calcination, and the influence of symmetry-driven site engineering on their structural, optical, and luminescent...
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Lindokuhle Mabizela (university of the free state)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Abstract: The rising emission of aromatic volatile organic compounds (VOCs), particularly xylene, presents serious environmental and health concerns. Xylene is primarily released from petrochemical industries and automobile exhaust, and exposure to it at different periods can cause skin and eye irritation, respiratory problems, neurological impairment, and deterioration of the central nervous...
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Katlego Morulane (University of the Free State)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
The rapid and precise detection of volatile organic compounds (VOCs), particularly acetone (C3H6O), is essential for environmental monitoring, industrial safety, and healthcare diagnostics. Due to the increased morbidity and mortality rates of metabolic diseases (i.e., diabetes), portable advanced n-p and n-p-n SMO-based acetone sensors should be considered for detecting and monitoring low...
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Salahudeen Adamu Gene (Ibrahim Badamasi Babangida University, Lapai, Nigeria)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Abstract:
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Supercapacitors (SC) are excellent energy storage solutions for electronics because they offer greater energy and power densities than traditional capacitors and batteries. Developing efficient and sustainable biochar-based electrode materials continues to be a challenge for developing green energy storage devices. In this study, activated carbons (AC) were produced from... -
Christy Graced07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Iron aluminide is a metal alloy that possesses unique properties, including high strength and temperature resistance, making it suitable for applications in the aerospace and energy sectors. Previous studies show that the intermetallic compound FeAl is far more ductile at room temperature, with a melting point of 1473 K, limiting its use to intermediate temperature applications. Due to their...
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Ms Andile Mazibuko (University of Limpopo)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Understanding the thermodynamic stability of TiCl3 polymorphs is only one component of improving titanium reduction processes. Transport behaviour and thermal response under reactor-relevant conditions must also be understood. In this study, classical molecular dynamics simulations were employed to evaluate the temperature-dependent heat capacity and ionic mobility of the R-3 and P3112...
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Eugene Fouche (Stellenbosch University)07/07/2026, 17:20Track C - PhotonicsPoster Presentation
Optical coherence tomography (OCT) is an interferometric imaging technique used to image samples such as the human eye in 2 or 3 dimensions, with micrometer resolution and millimeter penetration depths. A broad bandwidth pulsed laser is scanned across the sample, and for each laser beam position a depth profile of the sample is obtained. These depth scans are stitched together to create a 2D...
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Ms Mamly Serero (Mineral Processing and Technology Research Centre, Department of Metallurgy, School of Mining, Metallurgy and Chemical Engineering, Faculty of Engineering and The Built Environment, University of Johannesburg,)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Artisanal aluminum pots, which are common in Latin America, Asia, and Africa, are commonly made by smelting scrap metal into cooking equipment. Particularly in rural regions where three-legged aluminum pots are often used, the chemical mechanisms involved in reverse impurity diffusion in aluminum cookware have significant implications for food safety. High temperatures and prolonged contact...
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Mr Sifiso Mthalane (PhysicsDepartment, University of Zululand, KwaDlangezwa, 3886, South Africa)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
The performance of very high-temperature gas-cooled reactors (VHTRs), such as the pebble bed modular reactor (PBMR), relies on the effective retention of fission products (FPs) within the fuel. Silicon carbide (SiC), used as a primary diffusion barrier in nuclear fuel, is exposed to both FPs and helium (He) generated from alpha decay and transmutation processes. In this work, the influence of...
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DINEO MOLEBATSI (UNISA)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
In this study, n-type and p-type semiconductor metal fluoride (M-F) gas sensors were synthesized using a straightforward and scalable co-precipitation method. Their structural, morphological, vibrational, and gas-sensing properties were investigated. X-ray diffraction (XRD) analysis confirmed the successful formation of well-crystallized n-type (ZrFโ, SnFโ, ZnFโ) and p-type (NiFโ, CrFโ, CoFโ)...
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NHLAKANIPHO WISEMAN KHOZA (UNIVERSITY OF ZULULAND)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Nhlakanipho Khoza1,2 ,Puleng Biyela1 and Prince Mkwae1
1Department of Physics, University of Zululand, Private Bag X1001, KwaDlangezwa, 3886, South Africa
2Mangosuthu University of Technology, 511 Griffiths Mxenge Hwy, Umlazi, Durban, 4031, South Africa200903453@stu.unizulu.ac.za
Abstract
In this study, zinc oxide (ZnO) nanostructures were synthesized on a silicon (Si) substrate...
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Rifumo Chauke (University of Pretoria)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
This study investigates the effects of helium (He) co-implantation and swift heavy ion (SHI) irradiation on the structural evolution and migration behaviour of silver (Ag) in polycrystalline silicon carbide (SiC), followed by thermal annealing. SiC samples were first implanted with 360 keV Ag ions at room temperature to a fluence of 2 ร 10ยนโถ cmโปยฒ, producing significant amorphization. A subset...
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Mmeshi Hiine (UL)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
While Ni-rich layered cathode materials like are highly sought after for next-generation lithium-ion batteries due to their high capacity and cost-effectiveness, their inherent structural instability remains a significant barrier to practical application. To address this, the present work systematically investigates the impact of fluorine doping on the phase stability and electronic properties...
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Dr Moshibudi Ramoshaba (UNIVERSITY OF LIMPOPO)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
Tungsten diselenide (WSeโ), a layered transition metal dichalcogenide, has attracted significant attention due to its promising electronic and thermoelectric properties. In this study, the thermoelectric performance of WSeโ is systematically investigated using first-principles calculations based on density functional theory (DFT) combined with semi-classical Boltzmann transport theory. The...
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Edward Nkadimeng (University of the Witwatersrand)07/07/2026, 17:20Track F - Applied PhysicsPoster Presentation
Reaction diffusion systems can spontaneously develop stable spatial
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concentration patterns when two coupled chemical species diffuse at
sufficiently different rates, a symmetry-breaking phenomenon known
as the Turing instability. The onset of this instability depends
critically on the ratio of inhibitor to activator diffusivities,
$d = D_v/D_u$, and on the reaction kinetics, both of which... -
Beauty Masolo (University of Pretoria)07/07/2026, 17:20Track A - Physics of Condensed Matter and MaterialsPoster Presentation
BiโSeโ is a three-dimensional topological material with distinct electronic properties, characterized by an insulating bulk and conducting surface states. These surface states are protected by time-reversal symmetry, making this material a promising candidate for quantum computing applications. Understanding the topological state of BiโSeโ at the atomic level, and its ability to mitigate...
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Marcus Nkhumeleni (None)07/07/2026, 17:20Track F - Applied PhysicsPoster Presentation
Palladium (Pd) metal in the UG-2 orebody of the Eastern Bushveld Igneous Complex presents recovery challenges. Ore deposit used for the study contains significant concentration of this metal, which renders its recovery critical for the overall PGE recovery. Conventional recovery techniques employed have proven to have limitations in terms of optimising Pd-bearing minerals recovery. Although...
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Tebogo Ledwaba (Stellenbosch University)07/07/2026, 17:20Track F - Applied PhysicsPoster Presentation
The imaging and quantitative analysis of defects such as porosity and cracks are essential steps in optimizing the laser-powder bed fusion (L-PBF) process parameters for a given material. Most studies to date rely on optical microscopy, which provides only two-dimensional surface cross-sections. X-ray computed tomography (XCT) offers added advantages, including three-dimensional information...
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Fortune Nndwamato07/07/2026, 17:20Track B - Nuclear, Particle and Radiation PhysicsPoster Presentation
Paleontological fossils serve as invaluable archives of Earthโs history, preserving direct evidence of past life and environmental conditions. However, conventional analytical techniques often risk damaging these inherently fragile specimens. In this study, non-destructive X-rayโbased methods were employed to investigate fossilized bone and wood specimens. X-ray fluorescence (XRF) was used to...
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Thabang Theka07/07/2026, 17:20Track F - Applied PhysicsPoster Presentation
The spinel-structured zinc gallate (ZnGa2O4) has received a lot of interest lately due to its broad bandgap, strong ultraviolet (UV) transmittance, and stability in vacuum. As a member of the transparent metal oxide semiconductor family, ZnGa2O4 is a potential phosphor due to its thermal and chemical stability as well as its blue emission when exposed to electrons with low voltage or UV...
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Adrian Crous (Stellenbosch University, Physics Department)Track C - PhotonicsPoster Presentation
Laser resonance ionization is a highly sensitive and selective technique used for isolating isotopes via stepwise excitation. Hyperfine splitting of odd isotopes introduces degenerate hyperfine states. In the presence of an external magnetic field these states change their electronic angular momentum in time which can be used to induce transitions that would ordinarily be forbidden by atomic...
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