Physics
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Physics Experts

James Mbiyu Ngaruiya

Lecturer
Department of Physics
Jomo Kenyatta University of Agriculture and Technology
Kenya

Biography

Awards 2007 – 2008 Post Doctoral Fellowship from National Research Foundation (NRF) of Republic of South Africa at the University of Free State, Bloemfontein, South Africa. 2000 – 2004 DAAD PhD scholarship at RWTH Aachen Technical University, Germany. 1998 – 1999 MSc. research grants at University of Dar es Salaam, Tanzania through International Programs in the Physical Sciences (IPPS), Uppsala, Sweden. 1997 – 2000 JKUAT sponsorship for MSc. (Physics) at Kenyatta University, Nairobi, Kenya. 1987 – 1990 Government of Kenya Bursary for B.Ed (Sc) at Kenyatta University, Nairobi, Kenya. Membership 1. European Physical Society 2. DAAD Alumn

Research Interest

Condensed Matter Physics – with emphasis on material science for solar energy applications and phosphors ( - for devices and safety lighting).

Publications

  • Towards understanding the superior properties of transition metal oxynitrides prepared by reactive DC magnetron sputtering; S. Venkataraj, D. Severin, S. H. Mohamed, J. Ngaruiya, O. Kappertz and M. Wuttig, Thin Solid Films, 502 (1-2), 228 -234 (2006).

  • Enhanced photoluminescence of rare-earth activators in sol-gel derived SiO2 by energy transfer from ZnO nanoparticles and co-activators, OM Ntwaeaborwa, HC Swart, RE Kroon, JR Botha, JM Ngaruiya and PH Holloway, Review Article, Nova Science Publishers, Hauppauge, New York, Accepted, (2008).

  • Photoluminescence properties of powder and pulsed laser deposited PbS nanoparticles in SiO2, MS Dhlamini, T Hillie, JJ Terblans, JR Botha and HC Swart, J. Lum(D-07-00525R2), accepted, June 2008

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