Abstract:

As a consequence of the commercial sector and the war issue, military technologies have advanced quickly in recent years. Undetectable military aircraft, like the F-22 Raptor, are one piece of military technology that many nations desire. The typical method for shielding military aircraft from radar detecting is to use radar absorbing material (RAM). The reflection loss of RF radiation caused by radar-absorbing material is typically described using the transmission line model. Based on transmission line model, the reflection loss caused by Radar absorbing material depends on the relative permittivity and relative permeability of the Radar absorbing material. Researchers are attracted to the properties of reflection loss of the material because the extremely high reflection loss happens when the permittivity and the permeability of the material are closely matched. However, research on the radar absorbing material becomes challenging since the permittivity and the permeability of the material are function of signal frequency. In this presentation, result of designing radar absorbing material by compositing the magnetic material and dielectric material will be presented. Also, the physical interpretation of the result will be delivered.

 

Abstract:

X-ray photoelectron spectroscopy (XPS) is a powerful analytical technique used to determine the elemental composition and chemical bonding of surfaces. It has widespread use in fields such as materials science, surface chemistry, and nanotechnology for analyzing a broad range of samples, including metals, polymers, and biological materials. XPS also finds several applications in the industry, such as the analysis of semiconductors, coatings, and thin films, as well as the development of new materials. In this seminar, I will present the working principle, applications, limitations, and how to analyze surfaces using XPS.

Biography:

Moustafa M. M. Osman received his B.Sc. in physics from Sohag University, Sohag, Egypt in 2016. Currently, he is pursuing his master’s degree at the Department of physics, King Fahd University of Petroleum & Minerals (KFUPM), Saudi Arabia. His research interests focus on the development of nanomaterial for energy storage and energy harvesting application, such as Batteries, and supercapacitors