Multiple Resonance Metamaterial Emitter for Deception of Infrared Emission with Enhanced Energy Dissipation

Namkyu Lee, Boram Yoon, Taehwan Kim, Ji Yeul Bae, Joon Soo Lim, Injoong Chang, Hyung Hee Cho

Research output: Contribution to journalArticle

Abstract

Artificial camouflage surfaces for assimilating with the environment have been utilized for controlling optical properties. Especially, the optical properties of infrared (IR) camouflage materials should be satisfied with two requirements: deception of IR signature in a detected band through reduced emissive energy and dissipation of reduced emissive energy for preventing thermal instability through an undetected band. Most reported articles suggest the reduction of emissive energy in the detected band; however, broadband emission for enough energy dissipation through the undetected band simultaneously is still a challenging issue. Here, we demonstrate the multiresonance emitter for broadband emission with IR camouflage utilizing the electromagnetic properties of dielectric material. We reveal that the interaction between the magnetic resonance and dielectric layer's property in a metal-dielectric-metal structure induces the multiple resonance at the specific band. We present an IR camouflage behavior of multiresonance emitter on a curved surface through the IR camera (8-14 μm). We evaluate the energy dissipation in the undetected band, which is 1613% higher than metal and 26% higher than conventional selective emitters. This study paves the way to develop broadband emitters for radiative cooling and thermophotovoltaic applications.

Original languageEnglish
Pages (from-to)8862-8869
Number of pages8
JournalACS Applied Materials and Interfaces
Volume12
Issue number7
DOIs
Publication statusPublished - 2020 Feb 19

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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