Mechanically stretchable metamaterial with tunable mid-infrared optical properties

Fangqi Chen, Xiaojie Liu, Yanpei Tian, Yi Zheng

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Over the past decade, tremendous efforts have been devoted to the design of metamaterials with ultrahigh absorption. These perfect absorbers can realize the annihilation of incident electromagnetic waves by eliminating reflection and transmission of microwaves, infrared, visible, and ultraviolet. However, the optical properties are usually unchanged due to a rigid structure. In this work, we propose a mechanically stretchable metamaterial composed of polydimethylsiloxane and gold with tunable optical properties in the mid-infrared region. A large variation of absorptances with different gold filling ratios is demonstrated as well as the corresponding electric field distributions. Under moderate uniaxial and biaxial tensions, the proposed two-dimensional grating structure has achieved a dynamic tuning of infrared thermal properties, including a sharp reflectance-absorptance switch. This mechanically stretchable metamaterial can serve different optical and sensing functions due to its facile tunability.
Original languageEnglish (US)
Pages (from-to)37368-37375
Number of pages8
JournalOptics Express
Volume29
Issue number23
DOIs
StatePublished - Nov 8 2021
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2023-09-23

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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