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MR. RICHARD GICHUKI NGUMBU

OffLine
Staff Information
PERSONAL DETAILS
Designation
PRINCIPAL TECHNOLOGIST II
Corporate Email
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Personal Email
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Job Category
Non-Teaching
Phone Number
+254725764315
Division / Faculty
Faculty of Science
Directorate / Dept
DEPT. OF PHYSICS
Section
Main Campus
Address
P.O. BOX 536 -20115 Egerton
ACADEMIC QUALIFICATIONS

1988: HND. Electrical & Electronic Engineering Kenya Polytechnic
1984: Advanced Telecommunication Eng. Tech. Certificate Kenya Polytechnic
1983: Telecommunication Eng. Tech. Certificate Part II Kenya Polytechnic
1981: Telecommunication Eng. Tech. Certificate Part I Kenya Polytechnic
1984: Broadcasting Technology Certificate Kenya Institute of Mass Communication (KIMC)

FIELDS OF SPECIALIZATION

Material Science, Renewable( Solar Energy), Thin film Technology

 

WORK EXPERIENCE

March 2008: Present Chief Technologist , Physics, Egerton University

1992 - 2008: Senior Technologist Physics, Egerton University

1985 - 1992: Inspector Electronics, Kenya Broadcasting Corporation, Kenya

1992 - present: Member, Engineers Registration Board

 

KEY PROJECTS

2012 Determination of hall effect parameters of Gallium Arsenide and Gallium Manganese Arsenide by Van Der Pauw Geometry

2012 Determination of Optical Band Gap and Heat Dissipation of Ga1-x Mnx As with Light in UV – VIS – IR Region using OSA SPECTRO 320

2011 Study of Humidity and UV Wavelength Effects on Degradation of Photo – Irradiated Polyethylene Films

2011 Study of Temperature and Wavelength Range Effects on Degradation of Photo – Irradiated Polyethylene Films Using DMA

RESEARCH INTERESTS

Renewable Energy (Solar energy), PV Thin film Solar Cells. Material Science, TIVET

LIST OF PUBLICATIONS
  1. Nalyanya, Kallen, Rop, Ronald, Onyuka, Arthur,  Kilee Thomas,Odhiambo Peter, Ngumbu Richard: 2016, Thermal and dynamic mechanical analysis of bovine hide: Effect of chrome-tanning process- Journal of Thermal Analysis and Calorimetry.
  2. Muthui Zipporah, Kamweru Paul, FG Nderitu,Golicha Hussein, Ngumbu Richard: 2015: Polylactic acid (PLA) viscoelastic properties and their degradation compared with those of polyethylene:  International journal of physical sciences.  
  3. Nalyanya, Kallen, Rop, Ronald, Onyuka, Arthur, Odhiambo, Peter, Ngumbu, Richard( 2015),  Thermal and mechanical analysis of pickled and tanned cowhide: Effect of solar radiations:  Journal of Applied Polymer Science.
  4. Kemei, S.K., arap Kirui, M.s.K., Ndiritu Francis, Ngumbu Richard, Odhiambo Peter, Leite D.Pereira, A.L.J., da Silva, Jose H.D. (2015): Young's modulus and creep compliance of GaAs and Ga 1−x Mn x As ferromagnetic thin films under thermal stress at varied manganese doping levels:  MATERIALS SCIENCE-POLAND
  5. Muthui Zipporah, FG Nderitu, Golicha, Hussein, Kamweru Paul, Ngumbu Richard (2013), Determination Of The Density And The Damping Properties Of Polyethylene (Pe) And Polylactic (Pla) Films Using Dma: International Journal of Innovative Research and Studies.
  6. Kemei S.K., Kirui M.S.K., Ndiritu F.G., Ngumbu R.G., Odhiambo P.M. and Amollo T.A.
    Determination of Optical Band Gap and Heat Dissipation of Ga1-x Mnx As with Light in UV – VIS – IR Region using OSA SPECTRO 320. Journal of Advances in Physics Theories and Application.
  7. Kemei S.K., Kirui M.S.K., Ndiritu F.G., Odhiambo P.M., Ngumbu R.G. and Amollo T.A. Vol.8,2012 Determination of hall effect parameters of Gallium Arsenide and Gallium Manganese Arsenide by Van Der Pauw Geometry. Journal of Advances in Physics Theories and Application.
  8. P.K. Kamweru, F.G. Ndiritu, T.K. Kinyanjui, Z.W. Muthui, R.G. Ngumbu and P.M. Odhiambo. (06 October, 2011). Study of Humidity and UV Wavelength Effects on Degradation of Photo – Irradiated Polyethylene Films Using DMA. Journal of Macromolecular Science Part B: Physics, 51:5, 817-827.
  9. P.K. Kamweru, F.G. Ndiritu, T.K. Kinyanjui, Z.W. Muthui, R.G. Ngumbu and P.M. Odhiambo. (15 April, 2011). Study of Temperature and Wavelength Range Effects on Degradation of Photo – Irradiated Polyethylene Films Using DMA. Journal of Macromolecular Science Part B, 50:7, 1338-1349.
  10. F.M. Gaitho.,F.G. Ndiritu, P.M. Muriithi, R.G. Ngumbu, and J.K. Ngareh. (August, 2009)
    Effect of thermal conductivity on the efficiency of single crystal silicon solar cell coated with an anti-reflective thin film. Solar Energy , 83:8, 1290-1293
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