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Browsing by Author "Ndwandwe, OM"

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The control of magnetism near metal-to-insulator transitions of VO2 nano-belts

Author: Nkosi, SS ; Lafane, S ; Masina, Bathusile N ; Ndwandwe, OM Date: Dec 2016 The magnetic properties of paramagnetic/weakly ferromagnetic films are strongly affected by the proximity to materials that undergo a metal to insulator phase transition. Here, we show that under the deposition conditions associated with ... Read more
An instant photo-excited electrons relaxation on the photo-degradation properties of TiO2-x films

Author: Nkosi, SS ; Kortidis, I ; Motaung, DE ; Makgwane, Peter R ; Ndwandwe, OM ; Ray, SS ; Kiriakidis, G Date: Nov 2014 Pure and manganese (Mn) ion-doped TiO(sub2) films were grown by pulsed laser deposition under vacuum at different substrate temperatures 350 and 580 C for 50 min each. The concentration of the Mn inTiO(sub2) films was varied from 10 to 30%. ... Read more
Selective detection of propanol vapour at low operating temperature utilizing ZnO nanostructures

Author: Kortidis, Ioannis ; Lushozi, S ; Leshabane, N ; Nkosi, SS ; Ndwandwe, OM ; Tshilongo, J ; Ntsasa, N ; Motaung, David E Date: Sep 2019 We report on the propanol vapour (C3H8O) gas sensing characteristics of ZnO nanostructures prepared via hydrothermal assisted method. The ZnO-4h sensor showed a high response (i.e. resistance ratio), sensitivity and selectivity toward C3H8O ... Read more
Thermally induced defects in industrial diamond

Author: Masina, Bathusile N ; Forbes, A ; Ndwandwe, OM ; Hearne, G ; Mwakikunga, Bonex W Date: Mar 2009 In this study the authors make use of laser heating of HTHP industrial diamond, as well as the optically measured temperature profile of the diamond surface, to study temperature induced changes to the diamond structure, both chemically and ... Read more

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Browsing by Author "Ndwandwe, OM"

Browsing by Author "Ndwandwe, OM"

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