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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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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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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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Author
Karimi, P. M. (6)
Njoroge, W. K. (3)Kinyua, D. M. (2)Maina, S. N. (2)Mugwanga, F. K. (2)Ominde, C. F. (2)Rurimo, G. K. (2)Karanja, J. M. (1)Nyakang'o, O.E. (1)Omayio, E. O. (1)... View MoreSubjectconversion efficiency (η) (2)copper indium gallium selenide (CIGS) (2)Fill factor (FF) (2)open circuit voltage (Voc) (2)short circuit current (Isc) (2)Aberration (1)Birefrigence (1)Cellophane Sheet (1)Chalcogenides (1)Hologram (1)... View MoreDate Issued
2013 (6)

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