Recently added

Physics: Recent submissions

  • Benzodithiophene unit copolymerization to improve the stability of thiophene-based organic solar cells 
    Saito, Hiroki; Uchiyama, Takayuki; Okada-Shudo, Yoshiko; Mammo, Wendimagegne; Kruger, T.P.J. (Tjaart); Vohra, Varun; Tegegne, Newayemedhin A. (IOP Publishing, 2023-01)
    Please read abstract in the article.
  • Effects of irradiation-induced defects in germanium 
    Thaba, Cambel Rashia (University of Pretoria, 2023)
    In this study, we investigated the electrical characteristics of defects in germanium produced by alpha particle radiation using conventional deep level transient spectroscopy (DLTS) and Laplace deep-level transient ...
  • Laplace deep-level transient spectroscopy studies of the divacancy in alpha-particle irradiated silicon 
    Weideman, H.J.S. (University of Pretoria, 2024-02-15)
    Defects in semiconductors are usually detrimental to the device operation. Particularly in space, the high levels of radiation induce defects that damage electronics in satellites and space craft. However, in some devices ...
  • Efficient selection of gravitationally lensed OH megamasers with MeerKAT and the Square Kilometre Array 
    Button, Charissa; Deane, Roger (Oxford University Press, 2024-02)
    There has been a recent resurgence in hydroxyl (OH) megamaser research driven by Square Kilometre Array (SKA) precursor/pathfinder telescopes. This will continue in the lead-up to the SKA mid-frequency array, which will ...
  • Solid-state reactions between iridium thin films and silicon carbide in the 700 °C to 1000 °C temperature range 
    Njoroge, Eric Gitau; Hlatshwayo, Thulani Thokozani; Mokgadi, Thapelo Freddy; Thabethe, Thabsile Theodora; Skuratov, V.A. (Elsevier, 2023-08)
    Please read abstract in the article.
  • Fluorescence correlation spectroscopy of the main plant light-harvresting complex 
    Conradie, Francois (University of Pretoria, 2023-12-07)
    Light-harvesting complex II, LHCII, is vital for the light-dependent reaction of photosynthesis in higher plants. It acts as the starting point for photosynthesis in Photosystem II (PS II) by increasing the absorption of ...
  • Computational studies of doped tin disulphide monolayer for photoelectrochemical water splitting 
    Gqiba, Onke Lwazi (University of Pretoria, 2023-05-25)
    In this ab initio study, density functional theory, including a Hubbard U correction term (DFT+U), calculations were performed to investigate the photoelectrochemical (PEC) water splitting possibility of SnS2 monolayer. ...
  • Synthesis and characterization of tin dioxide coated gold nanocomposites for applications in thermal heat conduction 
    Makgale, Tshepho Trevor (University of Pretoria, 2023-11-16)
    In this work, we synthesized three nanofluids based on tin dioxide-coated gold nanocomposites (Au@SnO2) using a two-step method. First, we synthesized gold (Au) nanomaterials, then encapsulated them with tin dioxide ...
  • First principle study of ATiO 3 (A=Ti,Sr) materials for photovoltaic applications 
    Allan, Lynet; Mulwa, Winfred M.; Mapasha, Refilwe Edwin; Mwabora, Julius M.; Musembi, Robinson J. (Springer, 2024-01)
    Please read abstract in the article.
  • The structural, morphological and optical studies on BaAl2O4/MgAl2O4/MgO:x% Gd3+ (0 ≤ x ≤ 1.1) mixed phases synthesized by sol-gel method 
    Bele, Abongile; Mhlongo, M.R.; Koao, L.F.; Motaung, T.E.; Kroon, R.E.; Hlatshwayo, Thulani ThokozaniMotloung, S.V.; Motloung, S.V. (Elsevier, 2024-01)
    Please read abstract in the article.
  • Abnormal high stability halide perovskite thin films and solar cells to alpha and gamma irradiations with varying fluence 
    Fru, Juvet Nche; Diale, M. (Mmantsae Moche) (Elsevier, 2024-03)
    Please read abstract in the article.
  • Quantum wasserstein distance of order 1 between channels 
    Mapaya, Mathumo (University of Pretoria, 2023-10-26)
    We analyse a formulation of the quantum Wasserstein distance of order $1$ and set up a general theory leading to a Wasserstein distance of order $1$ between the unital maps from one specific algebra to another specified ...
  • Effects of varying Sm3+ concentration on the structure, morphology and photoluminescence properties of the BaAl2O4 /CaAl2O4/Ca4Al6O13/Ca3Al2O6:x% Sm3+ (0 ≤ x ≤ 1.9) mixed phases using citrate sol-gel method 
    Bele, Abongile; Mhlongo, M.R.; Koao, L.F.; Motaung, T.E.; Malevu, T.D.; Hlatshwayo, Thulani Thokozani; Mpelane, Siyasanga; Mlambo, Mbuso; Motloung, S.V. (Elsevier, 2022-12)
    Please read abstract in the article.
  • Effect of vanadium implantation on the chemical bonding structure of glassy carbon 
    Odutemowo, Opeyemi Shakirah; Fodor, T.; Csík, A.; Tokesi, K.; Malherbe, Johan B. (Elsevier, 2024-02)
    Please read abstract in the article.
  • Statistical approaches to the selection of strong gravitationally lensed spectral line sources in the Square Kilometre Array era 
    Button, Charissa Bronwyn (University of Pretoria, 2023)
    Neutral atomic hydrogen (HI) and hydroxyl (OH) are important gas components within the context of galaxy evolution. HI is a key transitory phase in the baryon cycle and, hence, has a crucial role in star formation. ...
  • Effects of helium (He) bubbles and annealing on the structural evolution and migration behavior of silver (Ag) implanted into polycrystalline SiC at 350 °C 
    Mtsi, Sive Zizo; Sohatsky, A.; Abdalla, Zaki Adam Yousif; Njoroge, Eric Gitau; Skuratov, V.A.; Motloung, S.V.; Malherbe, Johan B.; Hlatshwayo, Thulani Thokozani (Elsevier, 2023-12)
    The effects of helium (He) bubbles and annealing on the structural evolution and the migration of silver (Ag) implanted into polycrystalline silicon carbide were investigated. Ag ions of 360 keV were implanted into ...
  • Revisiting a flux recovery systematic error arising from common deconvolution methods used in aperture-synthesis imaging 
    Radcliffe, Jack Frederick; Beswick, R.J.; Thomson, A.P.; Njeri, A.; Muxlow, T.W.B. (Oxford University Press, 2024-01)
    The point-spread function (PSF) is a fundamental property of any astronomical instrument. In interferometers, differing array configurations combined with their uv coverage, and various weighting schemes can produce an ...
  • Quantum Wasserstein distance of order 1 between channels 
    Duvenhage, Rocco de Villiers; Mapaya, Mathumo (World Scientific Publishing, 2023-06)
    We set up a general theory leading to a quantum Wasserstein distance of order 1 between channels in an operator algebraic framework. This gives a metric on the set of channels from one composite system to another, which ...
  • Millimeter light curves of Sagittarius A* observed during the 2017 Event Horizon Telescope campaign 
    Wielgus, Maciek; Marchili, Nicola; Marti-Vidal, Ivan; Keating, Garrett K.; Ramakrishnan, Venkatessh; Tiede, Paul; Fomalont, Ed; Issaoun, Sara; Neilsen, Joey; Nowak, Michael A.; Blackburn, Lindy; Gammie, Charles F.; Goddi, Ciriaco; Haggard, Daryl; Lee, Daeyoung; Moscibrodzka, Monika; Tetarenko, Alexandra J.; Bower, Geoffrey C.; Chan, Chi-kwan; Chatterjee, Koushik; Chesler, Paul M.; Dexter, Jason; Doeleman, Sheperd S.; Georgiev, Boris; Gurwell, Mark; Johnson, Michael D.; Marrone, Daniel P.; Mus, Alejandro; Psaltis, Dimitrios; Ripperda, Bart; Witzel, Gunther; Akiyama, Kazunori; Alberdi, Antxon; Alef, Walter; Algaba, Juan Carlos; Anantua, Richard; Asada, Keiichi; Azulay, Rebecca; Bach, Uwe; Baczko, Anne-Kathrin; Ball, David; Baloković, Mislav; Barrett, John; Baubock, Michi; Benson, Bradford A.; Bintley, Dan; Blundell, Raymond; Boland, Wilfred; Bouman, Katherine L.; Boyce, Hope; Bremer, Michael; Brinkerink, Christiaan D.; Brissenden, Roger; Britzen, Silke; Broderick, Avery E.; Broguiere, Dominique; Bronzwaer, Thomas; Bustamante, Sandra; Byun, Do-Young; Carlstrom, John E.; Ceccobello, Chiara; Chael, Andrew; Chatterjee, Shami; Chen, Ming-Tang; Chen (陈永军), Yongjun; Cho, Ilje; Christian, Pierre; Conroy, Nicholas S.; Conway, John E.; Cordes, James M.; Crawford, Thomas M.; Crew, Geoffrey B.; Cruz-Osorio, Alejandro; Cui, Yuzhu; Davelaar, Jordy; De Laurentis, Mariafelicia; Deane, Roger; Dempsey, Jessica; Desvignes, Gregory; Dhruv, Vedant; Dzib, Sergio A.; Eatough, Ralph P.; Emami, Razieh; Falcke, Heino; Farah, Joseph; Fish, Vincent L.; Ford, H. Alyson; Fraga-Encinas, Raquel; Freeman, William T.; Friberg, Per; Fromm, Christian M.; Fuentes, Antonio; Galison, Peter; Garcia, Roberto; Gentaz, Olivier; Gold, Roman; Gomez-Ruiz, Arturo I.; Gomez, José L.; Gu (顾敏峰), Minfeng; Hada, Kazuhiro; Haworth, Kari; Hecht, Michael H.; Hesper, Ronald; Ho (何子山), Luis C.; Ho, Paul; Honma, Mareki; Huang, Chih-Wei L.; Huang (黄磊), Lei; Hughes, David H.; Ikeda, Shiro; Impellizzeri, C. M. Violette; Inoue, Makoto; James, David J.; Jannuzi, Buell T.; Janssen, Michael; Jeter, Britton; Jiang, Wu; Jimenez-Rosales, Alejandra; Jorstad, Svetlana; Joshi, Abhishek, V.; Jung, Taehyun; Karami, Mansour; Karuppusamy, Ramesh; Kawashima, Tomohisa; Kettenis, Mark; Kim, Dong-Jin; Kim, Jae-Young; Kim, Jongsoo; Kim, Junhan; Kino, Motoki; Koay, Jun Yi; Kocherlakota, Prashant; Kofuji, Yutaro; Koch, Patrick M.; Koyama, Shoko; Kramer, Carsten; Kramer, Michael; Krichbaum, Thomas P.; Kuo, Cheng-Yu; La Bella, Noemi; Lauer, Tod R.; Lee, Sang-Sung; Leung, Po Kin; Levis, Aviad; Li, Zhiyuan; Lico, Rocco; Lindahl, Greg; Lindqvist, Michael; Lisakov, Mikhail; Liu, Jun; Liu, Kuo; Liuzzo, Elisabetta; Lo, Wen-Ping; Lobanov, Andrei P.; Loinard, Laurent; Lonsdale, Colin; Lu, Ru-Sen; Mao, Jirong; Markoff, Sera; Marscher, Alan P.; Matsushita, Satoki; Matthews, Lynn D.; Medeiros, Lia; Menten, Karl M.; Michalik, Daniel; Mizuno, Izumi; Mizuno, Yosuke; Moran, James M.; Moriyama, Kotaro; Mueller, Cornelia; Musoke, Gibwa; Myserlis, Ioannis; Nadolski, Andrew; Nagai, Hiroshi; Nagar, Neil M.; Nakamura, Masanori; Narayan, Ramesh; Narayanan, Gopal; Natarajan, Iniyan; Nathanail, Antonios; Fuentes, Santiago Navarro; Neri, Roberto; Ni, Chunchong; Noutsos, Aristeidis; Oh, Junghwan; Okino, Hiroki; Olivares, Hector; Ortiz-Leon, Gisela N.; Oyama, Tomoaki; Ozel, Feryal; Palumbo, Daniel C. M.; Paraschos, Georgios Filippos; Park, Jongho; Parsons, Harriet; Patel, Nimesh; Pen, Ue-Li; Pesce, Dominic W.; Pietu, Vincent; Plambeck, Richard; PopStefanija, Aleksandar; Porth, Oliver; Potzl, Felix M.; Prather, Ben; Preciado-Lopez, Jorge A.; Pu, Hung-Yi; Rao, Ramprasad; Rawlings, Mark G.; Raymond, Alexander W.; Rezzolla, Luciano; Ricarte, Angelo; Roelofs, Freek; Rogers, Alan; Ros, Eduardo; Romero-Cañizales, Cristina; Roshanineshat, Arash; Rottmann, Helge; Roy, Alan L.; Ruiz, Ignacio; Ruszczyk, Chet; Rygl, Kazi L. J.; Sanchez, Salvador; Sanchez-Arguelles, David; Sánchez-Portal, Miguel; Sasada, Mahito; Satapathy, Kaushik; Savolainen, Tuomas; Schloerb, F. Peter; Schuster, Karl-Friedrich; Shao, Lijing; Shen, Zhiqiang; Small, Des; Sohn, Bong Won; SooHoo, Jason; Souccar, Kamal; Sun, He; Tazaki, Fumie; Tilanus, Remo P. J; Titus, Michael; Torne, Pablo; Traianou, Efthalia; Trent, Tyler; Trippe, Sascha; Bemmel, Ilse van; Van Langevelde, Huib Jan; Van Rossum, Daniel R.; Vos, Jesse; Wagner, Jan; Ward-Thompson, Derek; Wardle, John; Weintroub, Jonathan; Wex, Norbert; Wharton, Robert; Wiik, Kaj; Wondrak, Michael F.; Wong, George N.; Wu, Qingwen; Yamaguchi, Paul; Yoon, Doosoo; Young, Andre; Young, Ken; Younsi, Ziri; Yuan, Feng; Yuan, Ye-Fei; Zensus, J. Anton; Zhang, Shuo; Zhao, Guang-Yao; Zhao, Shan-Shan (IOP Publishing, 2022-05)
    The Event Horizon Telescope (EHT) observed the compact radio source, Sagittarius A* (Sgr A*), in the Galactic Center on 2017 April 5–11 in the 1.3 mm wavelength band. At the same time, interferometric array data from the ...
  • Helium and strontium co-implantation into SiC at room temperature and isochronal annealing : structural evolution of SiC and migration behaviour of strontium 
    Mokgadi, Thapelo Freddy; Abdalla, Zaki Adam Yousif; Abdelbagi, Hesham Abdelbagi Ali; Msimanga, Mandla; Maepa, Charity E.; Skuratov, Vladimir; Hlatshwayo, Thulani Thokozani (Elsevier, 2023-01)
    Understanding the structural evolution of SiC implanted with fission product surrogates in the presence of helium (He) is of importance for its application in both fission and fusion rectors. In this study, polycrystalline ...