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@ARTICLE{Lee:904363,
author = {Lee, Namkyu and Lim, Joon-Soo and Chang, Injoong and Lee,
Donghwi and Cho, Hyung Hee},
title = {{F}lexible {T}hermocamouflage {M}aterials in {S}upersonic
{F}lowfields with {S}elective {E}nergy {D}issipation},
journal = {ACS applied materials $\&$ interfaces},
volume = {13},
number = {36},
issn = {1944-8244},
address = {Washington, DC},
publisher = {Soc.},
reportid = {FZJ-2021-05933},
pages = {43524 - 43532},
year = {2021},
abstract = {Camouflage refers to a creature’s behavior to protect
itself from predators by assimilating its signature with the
environment. In particular, thermal camouflage materials in
the infrared (IR) wave are attracting interest for energy,
military, and space applications. To date, several types of
camouflage materials such as photonic crystals and
metal–dielectric–metal structures have been developed.
However, flexible camouflage materials still face
challenging issues because of the material’s brittleness
and anomalous dispersion. Herein, we propose flexible
thermocamouflage materials (FTCM) for IR camouflage on an
arbitrary surface without mechanical failure. Without using
a polymer as a dielectric layer, we realized FTCM by
changing the unit cell structure discretely. By imaging
methods, we verified their flexibility, machinability, and
IR camouflage performance. We also measured and calculated
the spectral emissivity of FTCM; they showed electromagnetic
behavior similar to a conventional emitter. We quantified
the IR camouflage performance of FTCM that the emissivity in
the undetected band (5–8 μm) is 0.27 and the emissivity
values in detected bands are 0.12 (3–5 μm) and 0.16
(8–14 μm) in the detected bands, respectively. Finally,
we confirmed the IR camouflage performance on an arbitrary
surface in a supersonic flowfield. FTCM are expected to help
to improve our basic understanding of metamaterials and find
widespread application as IR camouflage materials.},
cin = {IBI-4},
ddc = {600},
cid = {I:(DE-Juel1)IBI-4-20200312},
pnm = {5241 - Molecular Information Processing in Cellular Systems
(POF4-524)},
pid = {G:(DE-HGF)POF4-5241},
typ = {PUB:(DE-HGF)16},
pubmed = {34472852},
UT = {WOS:000697282300113},
doi = {10.1021/acsami.1c09333},
url = {https://juser.fz-juelich.de/record/904363},
}