Abstract

In this paper, a switchable metamaterial absorber/reflector has been presented based on microfluidic technology. The proposed structure consists of a meandered pattern engraved in an elastomeric substrate, where the liquid metal alloy (eutectic gallium indium, EGaIn) can be injected through the microchannels. The novelty of the design lies in its switching response from perfect reflection to polarization-selective absorption, depending on the injection of EGaIn in the channels. The structure, with liquid metal alloy, exhibits narrow-band absorption at 5.92 GHz during vertical polarization, whereas the absorption is shifted to higher frequency range (15.09 GHz) under horizontal polarization. Surface current distribution of the geometry has been studied to explain the absorption mechanism for different polarizations. Finally, the structure has been fabricated and experimentally verified, thereby confirming the potential use of microfluidic technology based structures.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.