Amin Rastgordani

University of Illinois at Chicago | UIC · Department of Electrical and Computer Engineering

All-dielectric metasurface absorbers have great potential in many scientific and technical applications. The emerging metasurfaces show strong and versatile capabilities in controlling absorptance, reflectance, and transmittance of electromagnetic waves. In this work, we propose and investigate all-dielectric metasurface absorbers with an equivalen...

In this study, we propose and investigate a generalized circuit model for metasurface high-sensitivity sensors and broadband absorbers. Firstly, we propose a Terahertz (THz) tunable and polarization-independent high-sensitivity sensor based on a bulk Dirac semimetal (BDS) metasurface. We compare the results of the proposed circuit model with those...

In this paper, terahertz (THz) tunable high-sensitive refractive index sensors based on single and double ring graphene metasurfaces are proposed and investigated by the full-wave simulation based on the Finite Element Method (FEM) and by the calculation through a generalized circuit model introduced for the sensor structures. The absorption spectr...

Broadband absorbers show great potential in many scientific and technical applications. For most practical applications, the absorption bandwidth is one of the most substantial metrics. The emerging metasurfaces show strong and versatile capabilities in controlling the absorption, reflection, and propagation of electromagnetic waves. In this paper,...

In recent years, invisibility has become a research area of increasing interest due to the advances in material engineering. It may be possible to achieve invisibility through cloaking structures based on one or more layers of materials with proper electromagnetic properties. In this regards, we propose and analyze a bulk Dirac semimetal (BDS) cloa...