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

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%) can be achieved using a printed sheet of thickness lambda/215.

Automated summary

This study introduces a novel coherent absorber printed using conventional inkjet-printing technology, featuring low cost, frequency independence, polarization insensitivity, wide-angle absorption, and the ability for recongifurable absorbance. Experimental results show near perfect absorption can be achieved with a printed sheet of thickness lambda/215.