khairy.hamam576

Khairy Hammam Morsy

Professor - Professor of Tropical Medicine and Gastroenterology

Faculty of medicine

Address: Sohag, Egypt

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Publications Which contain the keyword: Optical

Optical, Electrical, and Thermoelectric Properties of Hydrothermally Synthesized Bi2Te3 Nanoflakes

2019-03-23 15:29:53 Keywords thermoelectric, power factor, Optical , Bi2Te3;, optica, Nanostructures, Bi2Te3,
Optical, Electrical, and Thermoelectric Properties of Hydrothermally Synthesized Bi2Te3 Nanoflakes
Thermoelectric power generators are promising for clean energy production through converting the waste heat to electricity in environmentally friendly ways without any noise or pollutants. This work reports a facile method to synthesize Bi2Te3 nanoflakes with an investigation of their structural, optical, and thermoelectric properties. Various techniques such as X-ray diffraction, field emission scanning electron microscope, transmission electron microscope, and ... Read more

EFFECT OF GAS PRESSURE AND FILM THICKNESS ON THE OPTICAL CONSTANTS OF TRANSPARENT CONDUCTING OXIDE BASED ON ZINC OXIDE

2018-10-31 00:19:09 Keywords Thin film, sputtering, , Optical , energy gap, refractive index,
EFFECT OF GAS PRESSURE AND FILM THICKNESS ON THE OPTICAL CONSTANTS OF TRANSPARENT CONDUCTING OXIDE BASED ON ZINC OXIDE
Thin films of aluminum zinc oxide are prepared using DC magnetron sputtering. It was found that changing the thickness of the film as well as the pressure of argon affect the transmittance, optical gap, width of the band tails of the localized state, refractive index, real and imaginary parts of the dielectric function. The real and imaginary parts of optical ... Read more

Optical and electrical performance of transparent conductive TiO2/ Cu/TiO2 multilayers prepared by magnetron sputtering

2018-10-05 13:18:02 Keywords multilayers, Resistivity, Optical ,
Optical and electrical performance of transparent conductive TiO2/ Cu/TiO2 multilayers prepared by magnetron sputtering
TiO2/Cu/TiO2 (TCT) multilayers were deposited by dc pulsed magnetron sputtering on glass substrates for the possible use as transparent conducting oxide (TCO). The thicknesses of copper ( Cud) interlayers were 0, 8, 10, 12, 13 and 15 nm. The changes in structural, optical and electrical properties of the TCT multilayers have been investigated as a function of Cud. XRD examination ... Read more

The disclosed transformation of pre-sputtered Ti films into nanoparticles via controlled thermal oxidation

2018-10-05 13:22:55 Keywords thermal oxidation, nanoparticles, Optical ,
The disclosed transformation of pre-sputtered Ti films into nanoparticles via controlled thermal oxidation
Nanoparticles of TiO2 were successfully prepared from pre-sputtered Ti films using the controlled thermal oxidation. The effect of oxidation temperature on structural, morphological and optical properties in addition to photocatalysis activity of the sputtered films was tested and explained. Analysis of XRD and EDAX elucidated the enhancement in crystallization and oxygen content with the increase of oxidation temperature. SEM depicted ... Read more

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