Flexible Broadband Metamaterial Perfect Absorber Based on Graphene-Conductive Inks

• DOI: 10.3390/photonics8100440
• Publication Date: 2021-10-14T01:48:39Z
• Authors: Le Van Long; Nguyen Sy Khiem; Bui Son Tung; Nguyen Thanh Tung; Trinh Thi Giang; Pham Thanh Son; Bui Xuan Khuyen; Vu Dinh Lam; Liangyao Chen; Haiyu Zheng; Youngpak Lee
• Keywords: Transformation Optics

In this work, we proposed a flexible broadband metamaterial perfect absorber (FBMPA) by exploiting pasted conductive-graphene ink on polyimide substrate. For the flat FBMPA, an absorption over 90% was found to cover wide frequency range (from 7.88 18.01 GHz). The high-absorption feature polarization-insensitive and regarded as stable with respect oblique incidence up 30 degrees of electromagnetic wave. high maintained well even when wrapped. That is, FBMPA attached cylindrical surfaces (with varying radius from 4 50 cm). both curved states, mechanism explained impedance matching dielectric loss absorber. Our work provides groundwork for commercialization future meta-devices such sensors, optical filters/switchers, photodetectors, energy converters.