Masina, Bathusile NLafane, SWu, LorindaAbdelli-Messaci, SKerdja, TForbes, A2014-07-182014-07-182014-02Masina, B.N, Lafane, S, Wu, L, Abdelli-Messaci, S, Kerdja, T and Forbes, A. 2014. Optimisation study of the synthesis of vanadium oxide nanostructures using pulsed laser deposition. In: Quantum Dots and Nanostructures: Synthesis, Characterization, and Modeling XI, SPIE Photonics West 2014, San Francisco, CA, USA, 1-6 February 2014http://spie.org/Publications/Proceedings/Paper/10.1117/12.2048917http://hdl.handle.net/10204/7489Quantum Dots and Nanostructures: Synthesis, Characterization, and Modeling XI, SPIE Photonics West 2014, San Francisco, CA, USA, 1-6 February 2014Fast imaging plasma plume study have been carried out on vanadium-oxygen plasma generated using 248 nm, 25 ns pulses from an excimer KrF laser under oxygen atmosphere. The plume expansion dynamics of an ablated VO(sub2) target was investigated using a fast-imaging technique. The free expansion, splitting, sharpening and stopping of the plume were observed during these oxygen pressures, 0.01, 0.05, 0.10 and 0.20 mbar. The influence of the plume dynamics study on the properties of the obtained vanadium oxide thin films were examined using X-Ray Diffraction method. A vanadium dioxide phases were deposited at 0.05 mbar oxygen pressure for target-substrate distance of 40 mm and 50 mm. Mixed phases of vanadium oxide were deposited at 0.01, 0.10 and 0.20 mbar oxygen pressure for target-substrate distance of 40 mm. Transition temperatures of around 60.9(supo)C have been measured from sample deposited at 0.05 mbar oxygen pressure for target-substrate distance of 50 mm. We observe mixed nanostructures for thin film prepared at 0.05 mbar for target-substrate distance of 40 mm, while the thin film prepared at 0.05 mbar for target-substrate of 50 mm shows an uniform nanostructure film.enPlasma plumesVanadium dioxideOptical switchesConference PresentationMasina, B. N., Lafane, S., Wu, L., Abdelli-Messaci, S., Kerdja, T., & Forbes, A. (2014). Optimisation study of the synthesis of vanadium oxide nanostructures using pulsed laser deposition. SPIE Proceedings. http://hdl.handle.net/10204/7489Masina, Bathusile N, S Lafane, Lorinda Wu, S Abdelli-Messaci, T Kerdja, and A Forbes. "Optimisation study of the synthesis of vanadium oxide nanostructures using pulsed laser deposition." (2014): http://hdl.handle.net/10204/7489Masina BN, Lafane S, Wu L, Abdelli-Messaci S, Kerdja T, Forbes A, Optimisation study of the synthesis of vanadium oxide nanostructures using pulsed laser deposition; SPIE Proceedings; 2014. http://hdl.handle.net/10204/7489 .TY - Conference Presentation AU - Masina, Bathusile N AU - Lafane, S AU - Wu, Lorinda AU - Abdelli-Messaci, S AU - Kerdja, T AU - Forbes, A AB - Fast imaging plasma plume study have been carried out on vanadium-oxygen plasma generated using 248 nm, 25 ns pulses from an excimer KrF laser under oxygen atmosphere. The plume expansion dynamics of an ablated VO(sub2) target was investigated using a fast-imaging technique. The free expansion, splitting, sharpening and stopping of the plume were observed during these oxygen pressures, 0.01, 0.05, 0.10 and 0.20 mbar. The influence of the plume dynamics study on the properties of the obtained vanadium oxide thin films were examined using X-Ray Diffraction method. A vanadium dioxide phases were deposited at 0.05 mbar oxygen pressure for target-substrate distance of 40 mm and 50 mm. Mixed phases of vanadium oxide were deposited at 0.01, 0.10 and 0.20 mbar oxygen pressure for target-substrate distance of 40 mm. Transition temperatures of around 60.9(supo)C have been measured from sample deposited at 0.05 mbar oxygen pressure for target-substrate distance of 50 mm. We observe mixed nanostructures for thin film prepared at 0.05 mbar for target-substrate distance of 40 mm, while the thin film prepared at 0.05 mbar for target-substrate of 50 mm shows an uniform nanostructure film. DA - 2014-02 DB - ResearchSpace DP - CSIR KW - Plasma plumes KW - Vanadium dioxide KW - Optical switches LK - https://researchspace.csir.co.za PY - 2014 T1 - Optimisation study of the synthesis of vanadium oxide nanostructures using pulsed laser deposition TI - Optimisation study of the synthesis of vanadium oxide nanostructures using pulsed laser deposition UR - http://hdl.handle.net/10204/7489 ER -