Electronic And Thermally Tunable Infrared Metamaterial Absorbers

Keywords

Absorber; Dynamic; Infrared; Liquid Crystal; Metamaterial; Phase Change Material

Abstract

In this paper, we report a computational and experimental study using tunable infrared (IR) metamaterial absorbers (MMAs) to demonstrate frequency tunable (7%) and amplitude modulation (61%) designs. The dynamic tuning of each structure was achieved through the addition of an active material - liquid crystals (LC) or vanadium dioxide (VO2) - within the unit cell of the MMA architecture. In both systems, an applied stimulus (electric field or temperature) induced a dielectric change in the active material and subsequent variation in the absorption and reflection properties of the MMA in the mid- to long-wavelength region of the IR (MWIR and LWIR, respectively). These changes were observed to be reversible for both systems and dynamic in the LC-based structure.

Publication Date

1-1-2016

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

9918

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.2238666

Socpus ID

85008425531 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85008425531

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