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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},
}