Frequency independent, remotely reconfigurable passive coherent perfect absorber using conventional inkjet-printing technology

Abstract

Abstract This work presents a systematic theoretical analysis and experimental validation of a novel coherent absorber which is printed through conventional inkjet-printing technology. The new absorber consists of a single resistively loaded sheet printed on a conventional plastic sheet, resulting a low complexity and passive design. The low-cost and easily fabricated absorber is frequency independent, polarization insensitive, wide-angle and we demonstrate its absorbance reconfigurability using a remote illumination as a control signal. Theoretical, numerical and experimental results are in good agreement. Specifically, experimental results shown that near perfect absorption (i.e., $$100\%$$ 100 % ) can be achieved using a printed sheet of thickness $$\lambda /215$$ λ / 215 .