m.awad

مديحه أحمد أبو الفضل عوض

مدرس - مدرس

كلية العلوم

العنوان: شارع 63 متفرع من شارع جمال عبد الناصر( العشرين) -مدينة ناصر

4

إعجاب

المنشورات و المؤلفات التي تحتوي علي الكلمة المفتاحية: Optical


2019-03-23 15:29:53 الكلمات المفتاحية 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 ... إقراء المزيد

2018-10-31 00:19:09 الكلمات المفتاحية 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 ... إقراء المزيد

2018-10-05 13:18:02 الكلمات المفتاحية 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 ... إقراء المزيد

2018-10-05 13:22:55 الكلمات المفتاحية 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 ... إقراء المزيد