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Towards virtual laboratories: a survey of labview-based Conduction of science experiments via the internet with an Illustrative consideration of remote control of an oscilloscope 

Agumba, O. John; Katana, G. Gabriel; Karimi, P. M. (Academic Journals, 2011-06)
In this work, a Remotely Accessible and Configurable Digital Cathode Ray Oscilloscope experiment system is designed in LabVIEW graphical development platform. The LabVIEW application is used to perform several tasks that ...
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Phase change memory based on SnSe4 alloy 

Karanja, J. M.; Karimi, P. M.; Njoroge, W. K.; Wamwangi, D. M. (Thin Solid Films, 2013-01-01)
A phase change alloy has been synthesized and characterized. The reversible phase transitions between amorphous and crystalline states of SnSe4 films have been studied using variable electrical pulses and X-ray diffraction. ...
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Thermal Stress Monitoring on Piston Rings by Real Time Holographic Interferometry 

Karimi, P. M.; Maina, S. N.; Rurimo, G. K.; Kinyua, D. M.; Ominde, C. F. (Scientific Research Publishing, 2013)
In this paper, real time holographic Interferometry (RTHI) technique was used to monitor the thermal stress on the piston rings. The piston rings holograms were recorded and the holographic plate replaced on the holder ...
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The role of backscattered energetic atoms in film growth in reactive magnetron sputtering of chromium nitride 

Sarakinos, K.; Alami, J.; Karimi, P. M.; Severin, D.; Wuttig, M. (IOP Publishing, 2007-02-07)
In this work the impact of backscattered energetic atoms on film growth in reactive sputtering of CrNx (x _ 1) is manifested. We use film and plasma characterization techniques, as well as simulations in order to study the ...
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Optical Phase Shift Measurements in Interferometry 

Nyakang'o, O.E.; Karimi, P. M.; Rurimo, G.K. (Scientific & Academic Publishing., 2013)
The precision and accuracy of optical phase-shifting technique is critical and affects the accuracy of the measurements undertaken using phase-shifting interferometers. The accuracy of optical phase shifters is limited by ...
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Characterization of SnSe-CdO: Sn PN Junction for Solar Cell Applications 

Makori, N. E.; Njoroge, W. K.; Amatalo, A.; Karimi, P. M. (Scientific and Academic Printing (SAP), 2015)
Solar energy has a great potential of meeting a large fraction of energy needs using photovoltaics. While most photovoltaic cells in use today are Silicon-based, cells of other semiconductor materials have been manufactured. ...
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Current-voltage characteristics of p-CuO/n-ZnO:Sn Solar cell 

Njoroge, W. K.; Omayio, Enock Osoro; Karimi, P. M.; Mugwanga, F. K. (Natural Sciences Publishing Cor., 2013)
A p-CuO/n-ZnO:Sn heterojunction solar cell has been fabricated on glass substrate in steps using Edwards AUTO 306 vacuum coater system. Copper oxide has energy band gap of the range 1.21-2.1 eV while tin doped zinc oxide ...
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Interferometry Analysis of Cellophane Birefringence 

Karimi, P. M.; Maina, S. N.; Rurimo, G. K.; Kinyua, D. M.; Ominde, C. F. (Scientific Research Publishing, 2013-10)
This paper reports on a simple approach of determining the ability of a transparent material, such as cellophane to rotate the direction of polarization of a light beam. In order to determine the birefringence of such a ...
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Current-voltage characteristics of p-CuO/n-ZnO:Sn Solar cell 

Omayio, E. O.; Karimi, P. M.; Njoroge, W. K.; Mugwanga, F. K. (Natural sciences publishing corporation, 2013)
Abstract: A p-CuO/n-ZnO:Sn heterojunction solar cell has been fabricated on glass substrate in steps using Edwards AUTO 306 vacuum coater system. Copper oxide has energy band gap of the range 1.21-2.1 eV while tin doped ...
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Optical and electrical properties of Snse thin films for solar cell applications. 

Makori, N. E.; Amatalo, I. A.; Karimi, P. M.; Njoroge, W. K. (Institute for Condensed Matter Physics, 2014)
Tin Selenide (SnSe) thin films were optimised for thin film solar cell applications. The thin films were successfully deposited by thermal evaporation using Edward’s Auto 306 Magnetron Sputtering System. Their optical and ...
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Karimi, P. M. (11)
Njoroge, W. K. (6)Makori, N. E. (3)Amatalo, I. A. (2)Kinyua, D. M. (2)Maina, S. N. (2)Mugwanga, F. K. (2)Ominde, C. F. (2)Rurimo, G. K. (2)Agumba, O. John (1)... View MoreSubjectElectrical properties (3)Optical properties (3)Thermal evaporation (3)conversion efficiency (η) (2)copper indium gallium selenide (CIGS) (2)Fill factor (FF) (2)open circuit voltage (Voc) (2)short circuit current (Isc) (2)Thin film thickness (2)Tin doping (2)... View MoreDate Issued2015 (1)2014 (2)2013 (6)2011 (1)2007 (1)

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