Mechanically Tunable Broadband Omnidirectional Infrared Absorption by Dielectric Metasurfaces

Andrew E. Butler, Christos Argyropoulos

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

New designs of mechanically tunable broadband and omnidirectional mid-infrared absorbers are proposed and theoretically analyzed. They utilize periodic dielectric metasurfaces embedded in an elastic material, i.e., polydimethylsiloxane (PDMS). Their tunable performance can be further improved when crumpled metallic substrates are used to terminate their structure. When stretched, the period of the dielectric metasurfaces increases while the thickness of the PDMS decreases, resulting to a rapid reduction in the total absorption. This dual elastic mechanism leads to a high degree of continuous absorption tunability over an ultrabroad wavelength range in the mid-infrared spectrum. The presented omnidirectional absorption tunability is expected to have important applications in emerging thermal management phenomena, such as radiative cooling of solar panels or spacecraft.

Original languageEnglish (US)
Title of host publication2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages677-678
Number of pages2
ISBN (Electronic)9781665496582
DOIs
StatePublished - 2022
Event2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022 - Denver, United States
Duration: Jul 10 2022Jul 15 2022

Publication series

Name2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022 - Proceedings

Conference

Conference2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022
Country/TerritoryUnited States
CityDenver
Period7/10/227/15/22

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Signal Processing
  • Instrumentation

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