Work

Advanced VO2-Graphene based compact THz absorber for EM shielding and biosensing applications

Year: 2024

Type: article

Abstract: This paper presents a compact, metal-free THz absorber utilizing VO 2 and graphene, offering ultra-wideband absorption (1.0702–13.3 THz) in the conducting state of VO 2 and narrow absorption at 6.81 THz in the insulating state. The absorber is tunable by adjusting the chemical potential of graphene and remains polarization-insensitive with over 80% absorption at incidence angles up to 70°. It demonstrates switching between conducting and insulating states, validated through an equivalent electric circuit model. The absorber’s applications include EM interference shielding, stealth, and biosensing, with high sensitivity, figure of merit, and quality factor for detecting cancerous cells and viruses.

Source: Ain Shams Engineering Journal

DOI: 10.1016/j.asej.2024.103226

Authors: Patri Upender, P. Sandeep, S.Prasanna Bharathi, Krishna Kumba, Amarjit Kumar

Institutions: Vellore Institute of Technology University, National Institute of Technology Warangal

Language: English

Topic: Electromagnetic wave absorption materials

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $860

OpenAlex ID: W4405531622

FWCI: 0.847

Cites: 42

Cited by: 11

Related to: 10