Design, fabrication and characterization of flexible and ultrathin microwave metamaterial absorber

摘要

In this paper we propose a microwave metamaterial absorber which is flexible, non-corrosive and ultrathin in nature. The absorber is designed using non-metallic expanded graphite based square ring resonators fabricated on linear low density polyethylene substrate. Expanded graphite is synthesized and prepared for square rings fabrication. Reflection and absorption of the designed absorber are obtained both numerically and experimentally. More than 90% absorption of electromagnetic wave at the resonating frequency is achieved in both simulation and experiment. Being ultra-thin, flexible and no-corrosive, the proposed absorber have the ability to be used on conformal surfaces, body worn applications etc.