Multispectral Electro-Optical Surfaces: from Visible to Microwave

Optical materials with colour-changing abilities have been explored for display devices, smart windows, or modulation of visual appearance. The efficiency of these materials, however, has strong wavelength dependence, which limits their functionality to a narrow spectral range. Here, we report graph...

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Published inarXiv.org
Main Authors M Said Ergoktas, Bakan, Gokhan, Kovalska, Evgeniya, Le Fevre, Lewis W, Fields, Richard P, Steiner, Pietro, Yu, Xiaoxiao, Salihoglu, Omer, Balci, Sinan, Novoselov, Kostya, Dryfe, Robert A W, Kocabas, Coskun
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 16.07.2020
Subjects
Camouflage
Color
Display devices
Graphene
Intercalation
Lithium
Optical materials
Optics
Physics - Applied Physics
Physics - Optics
Smart materials
Windows (apertures)
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Summary:Optical materials with colour-changing abilities have been explored for display devices, smart windows, or modulation of visual appearance. The efficiency of these materials, however, has strong wavelength dependence, which limits their functionality to a narrow spectral range. Here, we report graphene-based electro-optical devices with unprecedented optical tunability covering the entire electromagnetic spectrum from the visible to microwave. We achieve this non-volatile and reversible tunability by electro-intercalation of lithium into graphene layers in an optically accessible device structure. This unique colour-changing capability, together with area-selective intercalation, inspires fabrication of new multispectral devices, including display devices and electro-optical camouflage coating. We anticipate that these results provide realistic approaches for programmable smart optical surfaces with a potential utility in many scientific and engineering fields.
ISSN:2331-8422
DOI:10.48550/arxiv.2007.08385