Adaptive infrared-reflecting systems inspired by cephalopods

Author:

Xu Chengyi1ORCID,Stiubianu George T.1ORCID,Gorodetsky Alon A.12ORCID

Affiliation:

1. Department of Chemical Engineering and Materials Science, University of California, Irvine, Irvine, CA 92697, USA.

2. Department of Chemistry, University of California, Irvine, Irvine, CA 92697, USA.

Abstract

Now you see it, now you don't Thermal vision cameras detect differences in temperature by sensing infrared wavelengths. If a coating could be developed that showed dynamic tuning of the effective temperature, it might be possible to hide objects from infrared sensing. Xu et al. started with a basic Bragg reflector made up of multiple layers of alternating materials with varying refractive index. The authors designed structures that were wavy to begin with so that they could be flattened out by electrical activation. This changed the infrared reflectivity and, thus, the effective temperature of the object observed in its infrared profile. Science , this issue p. 1495

Funder

Air Force Office of Scientific Research

Defense Advanced Research Projects Agency

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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