RESEARCH AND FABRICATION OF AN ELECTROMAGNETIC WAVE ABSORPTION CIRCUIT BASED ON GRAPHENE CONDUCTIVE INK ON PAPER SUBSTRATE

Abstract

In this study, we proposed a graphene-based metamaterial absorber printed on a paper substrate. The
absorber, fabricated on Kodak paper using a two-axis CNC machine with graphene ink, maintains an
absorption rate above 90% across a wide bandwidth of 2 GHz, from approximately 5.3 GHz to 7.3 GHz,
even under bending conditions. Notably, the graphene-based metamaterial absorber (GMA) still maintains
an absorption rate greater than 70% within the frequency range of 5.67 GHz to 5.78 GHz at an incident
angle of 80º. The absorber's flexibility was clearly demonstrated under various bending radii while
maintaining high absorption performance, making it suitable for flexible metamaterial absorption
applications.