Browsing Physics by Title

Browsing Physics by Title

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  • Van der Waals density functional studies of hydrogenated and lithiated bilayer graphene 
    Mapasha, Refilwe Edwin (University of Pretoria, 2014)
    In this thesis, we use rst principles density functional theory (DFT) to study the energetics, structural and electronic properties of hydrogenated and lithiated bilayer graphene material systems. The newly developed ...
  • Van der Waals density-functional study of 100% hydrogen coverage on bilayer graphene 
    Mapasha, Refilwe Edwin; Andrew, Richard Charles; Chetty, Nithaya (Elsevier, 2013-10)
    We investigate all hydrogen configurations that exist in a 1 1 unit cell of bilayer graphene at 100% coverage to find the low energy competing configurations using density functional theory (DFT). Other unique ...
  • Vanadium oxides based composites for supercapacitor applications 
    Ndiaye, Ndeye Maty (University of Pretoria, 2019)
    In this thesis, different vanadium-based materials and vanadium/carbon composites were synthesized and explored as active electrode materials for supercapacitor application. The major goal of this study was to incorporate ...
  • Verification of radiative transfer schemes for the EHT 
    Gold, Roman; Broderick, Avery E.; Younsi, Ziri; Fromm, Christian M.; Gammi, Charles F.; Mościbrodzka, Monika; Pu, Hung-Yi; Bronzwaer, Thomas; Davelaar, Jordy; Dexter, Jason; Ball, David; Chan, Chi-kwan; Kawashima, Tomohisa; Mizuno, Yosuke; Ripperda, Bart; Ripperda, Bart; Alberdi, Antxon; Alef, Walter; Asada, Keiichi; Azulay, Rebecca; Baczko, Anne-Kathrin; Balokovic, Mislav; Barrett, John; Bintley, Dan; Blackburn, Lindy; Boland, Wilfred; Bouman, Katherine L.; Bower, Geoffrey C.; Bremer, Michael; Brinkerink, Christiaan D.; Brissenden, Roger; Britzen, Silke; Broguiere, Dominique; Byun, Do-Young; Carlstrom, John E.; Chael, Andrew; Chatterjee, Koushik; Chatterjee, Shami; Chen, Ming-Tang; Chen, Yongjun; Cho, Ilje; Christian, Pierre; Conway, John E.; Cordes, James M.; Crew, Geoffrey B.; Cui, Yuzhu; De Laurentis, Mariafelicia; Deane, Roger; Dempsey, Jessica; Desvignes, Gregory; Doeleman, Sheperd S.; Eatough, Ralph P.; Falcke, Heino; Fish, Vincent L.; Fomalont, Ed; Fraga-Encinas, Raquel; Freeman, Bill; Friberg, Per; Gómez, Jose L.; Galison, Peter; García, Roberto; Gentaz, Olivier; Georgiev, Boris; Goddi, Ciriaco; Gu, Minfeng; Gurwell, Mark; Hada, Kazuhiro; Hecht, Michael H.; Hesper, Ronald; Ho, Luis C.; Ho, Paul; Honma, Mareki; Huang, Chih-Wei L.; Huang, Lei; Hughes, David H.; Inoue, Makoto; Issaoun, Sara; James, David J.; Jannuzi, Buell T.; Janssen, Michael; Jeter, Britton; Jiang, Wu; Jimenez-Rosales, Alejandra; Johnson, Michael D.; Jorstad, Svetlana; Jung, Taehyun; Karami, Mansour; Karuppusamy, Ramesh; Keating, Garrett K.; Kettenis, Mark; Kim, Jae-Young; Kim, Junhan; Kim, Jongsoo; Kino, Motoki; Koay, Jun Yi; Koch, Patrick M.; Koyama, Shoko; Kramer, Michael; Kramer, Carsten; Krichbaum, Thomas P.; Kuo, Cheng-Yu; Lauer, Tod R.; Sang-Sung., Lee; Li, Yan-Rong; Li, Zhiyuan; Lico, Rocco; Lindqvist, Michael; Liu, Kuo; Liuzzo, Elisabetta; Lo, Wen-Ping; Lobanov, Andrei P.; Loinard, Laurent Loinard; Lonsdale, Colin; Lu, Ru-Sen; MacDonald, Nicholas R.; Markoff, Sera; Mao, Jirong; Marrone, Daniel P.; Marscher, Alan P.; Marti-Vidal, Ivan; Matsushita, Satoki; Matthews, Lynn D.; Medeiros, Lia; Menten, Karl M.; Mizuno, Izumi; Moran, James M.; Moriyama, Kotaro; Nagai, Hiroshi; Nakamura, Masanori; Nagar, Neil M.; Narayan, Ramesh; Narayanan, Gopal; Natarajan, Iniyan; Neri, Roberto; Ni, Chunchong; Noutsos, Aristeidis; Okino, Hiroki; Ortiz-Leon, Gisela N.; Oyama, Tomoaki; Ozel, Feryal; Palumbo, Daniel C.M.; Park, Jongho; Patel, Nimesh; Pen, Ue-Li; Pesce, Dominic W.; Plambeck, Richard; Piétu, Vincent; PopStefanija, Aleksandar; Porth, Oliver; Preciado-Lopez, Jorge A.; Psaltis, Dimitrios; Ramakrishnan, Venkatessh; Rao, Ramprasad; Rawlings, Mark G.; Raymond, Alexander W.; Rezzolla, Luciano; Roelofs, Freek; Rogers, Alan; Ros, Eduardo; Rose, Mel; Roshanineshat, Arash; Rottmann, Helge; Roy, Alan L.; Ruszczyk, Chet; Rygl, Kazi L.J.; Sánchez, Salvador; Sánchez-Arguelles, David; Sasada, Mahito; Savolainen, Tuomas; Schuster, Karl-Friedrich; Schloerb, F. Peter; Shao, Lijing; Shen, Zhiqiang; Small, Des; Sohn, Bong Won; SooHoo, Jason; Tiede, Paul; Tazaki, Fumie; Tilanus, Remo P.J.; Titus, Michael; Toma, Kenji; Torne, Pablo; Trent, Tyler; Traianou, Thalia; Trippe, Sascha; Tsuda, Shuichiro; Van Langevelde, Huib Jan; Van Bemmel, Ilse; Van Rossum, Daniel R.; Wagner, Jan; Wardle, John; Wex, Norbert; Weintroub, Jonathan; Wharton, Robert; Wielgus, Maciek; Wong, George N.; Wu, Qingwen; Yoon, Doosoo; Young, Ken; Young, Andre; Yuan, Feng; Yuan, Ye-Fei; Zensus, J. Anton; Zhao, Guangyao; Zhao, Shan-Shan; Zhu, Ziyan (American Astronomical Society, 2020-07)
    The Event Horizon Telescope (EHT) Collaboration has recently produced the first resolved images of the central supermassive black hole in the giant elliptical galaxy M87. Here we report on tests of the consistency and ...
  • Vibrational and electronic states of sapphire and wurtzite ZnO 
    Machatine, Augusto Gonçalo Jose (University of Pretoria, 2010-09-23)
    No abstract available.
  • Vibrational modes of the wurtzite structures : ZnO, GaN and 6H-SiC 
    Nephale, Ndanduleni (University of Pretoria, 2009-12-08)
    Please read the abstract in the front of the document.
  • Viewing classical radio galaxies with the upgraded GMRT and MeerKAT 
    Lal, Dharam V.; Legodi, Portia; Fanaroff, Bernie; Venturi, Tiziana; Smirnov, Oleg M.; Bondi, Marco; Thorat, Kshitij; Bester, Landman H.; Jozsa, Gyula I.G.; Kleiner, Dane; Loi, Francesca; Makhathini, Sphesihle; White, Sarah V. (MDPI, 2021-10-29)
    We present a progress report of a study of FR I and FR II radio galaxies. Several new morphological features in the radio emission are now revealed using the high (mJy) sensitivity reached in the range 550–1712 MHz, more ...
  • Visualising higher order Brillouin zones with applications 
    Andrew, Richard Charles; Salagaram, Trisha; Chetty, Nithaya (Institute of Physics, 2017-02-28)
    A key concept in material science is the relationship between the Bravais lattice, the reciprocal lattice and the resulting Brillouin zones (BZ). These zones are often complicated shapes that are hard to construct and ...
  • A VO2 based hybrid super-capacitor utilizing a highly concentrated aqueous electrolyte for increased potential window and capacity 
    Lindberg, Simon; Ndiaye, Ndeye Maty; Manyala, Ncholu I.; Johansson, Patrik; Matic, Aleksandar (Elsevier, 2020-06)
    In this work we demonstrate the application of a highly concentrated aqueous electrolyte to a hybrid supercapacitor cell. We combine an 8 m Sodium bis(trifluoromethanesulfonyl)imide (NaTFSI) aqueous electrolyte with a ...
  • A wafer-scale Bernal-stacked bilayer graphene film obtained on a dilute Cu (0.61 at% Ni) foil using atmospheric pressure chemical vapour deposition 
    Madito, M.J. (Moshawe); Manyala, Ncholu I.; Bello, Abdulhakeem; Dangbegnon, Julien K.; Masikhwa, T.M. (Tshifhiwa); Momodu, Damilola Y. (Royal Society of Chemistry, 2016)
    A bilayer graphene film was synthesized on a dilute Cu (0.61 at% Ni) foil using atmospheric pressure chemical vapour deposition (AP-CVD). Atomic force microscopy average step height analysis, scanning electron microscopy ...
  • Wasserstein distance between noncommutative dynamical systems 
    Duvenhage, Rocco (Elsevier, 2023-11)
    We introduce and study a class of quadratic Wasserstein distances on spaces consisting of generalized dynamical systems on a von Neumann algebra. We emphasize how symmetry of such a Wasserstein distance arises, but also ...
  • Waste chicken bone-derived porous carbon materials as high performance electrode for supercapacitor applications 
    Tarimo, Delvina Japhet; Oyedotun, Kabir Oyeniran; Sylla, Ndeye Fatou; Mirghni, Abdulmajid Abdallah; Ndiaye, Ndeye Maty; Manyala, Ncholu I. (Elsevier, 2022-07)
    Please read abstract in the article.
  • Wave packet dynamics for a non-linear Schrödinger equation describing continuous position measurements 
    Zander, Claudia; Plastino, Angel Ricardo (Angelo); Diaz-Alonso, J. (Elsevier, 2015-11)
    We investigate time-dependent solutions for a non-linear Schrödinger equation recently proposed by Nassar and Miret-Artés (NM) to describe the continuous measurement of the position of a quantum particle (Nassar, 2013; ...
  • What to feed or what not to feed‑that is still the question 
    Lech, James C.; Dorfsman, Sophia I.; Repas, Zoltan; Kruger, T.P.J. (Tjaart); Gyalai, Ingrid Melinda; Boros, Laszlo G. (Springer, 2021-11-20)
    INTRODUCTION : This review addresses metabolic diversities after grain feeding of cattle using artificial total mixed ration (TMR), in place of pasture-based feeding. OBJECTIVES : To determine how grain feeding impairs the ...
  • Women in physics in Zimbabwe 
    Danga, Helga Tariro; Tunhuma, Shandirai Malven; Gora, V.E.; Jena, J.F.; Chawanda, A. (American Institute of Physics, 2019)
    This paper reports on the state of women in physics in Zimbabwe since 2002. Three universities have physics departments: the University of Zimbabwe, National University of Science and Technology, and Midlands State ...
  • Women in physics in Zimbabwe : the struggle continues 
    Chitake, Olivia; Ndlovu, Nothando; Matandirotya, Electdom; Mazunga, Felix; Sumanya, Clemence; Danga, Helga T. (AIP Publishing, 2023)
    Gender imbalance impedes the participation of women in physics. The number of women in physics in Zimbabwe remains very low relative to men. The few women who graduate with BSc degrees in physics change professions or ...
  • Workshop report : becoming a leader in entrepreneurship 
    Montes, Lilia Meza; Acosta, Sofía; Diale, M. (Mmantsae Moche); Gammag, Rayda (AIP Publishing, 2023-11-17)
    Despite significant inroads in female participation in the global workforce, senior leadership positions still remain predominantly male. Although many countries are promoting the participation of women in entrepreneurial ...
  • X-ray diffraction and thermodynamics kinetics of SiB6 under gamma irradiation dose 
    Mirzayev, M.N.; Jabarov, S.H.; Asgerov, E.B.; Mehdiyeva, R.N.; Thabethe, Thabsile Theodora; Biira, S.; Tiep, N.V. (Springer, 2019-10)
    Please read abstract in the article.
  • Zernike coefficients of a circular Gaussian pupil 
    Mafusire, Cosmas; Kruger, T.P.J. (Tjaart) (Taylor and Francis, 2020)
    We present a derivation of a formula for Zernike-Gauss circle coefficients expressed in terms of Zernike circle coefficients for a circular Gaussian pupil by revisiting a method in which theorthonormal Zernike-Gauss circle ...
  • Zirconium carbide (ZrC) synthesised via chemical vapour deposition (CVD) and spark plasma sintering (SPS) and phase formation of iridium (Ir) films deposited on ZrC at relatively low temperatures 
    Alawad, Bilal Abbas Bilal (University of Pretoria, 2019)
    In this thesis,zirconium carbide (ZrC) layers were deposited on graphite substrates using a CVD reactor at temperatures ranging from 1250 °C to 1450 °C in steps of 50 °C. The deposited layers were characterised by XRD, ...