Multispectral Graphene-Based Electro-Optical Surfaces with Reversible Tunability from Visible to Microwave Wavelengths.

Multispectral Graphene-Based Electro-Optical Surfaces with Reversible Tunability from Visible to Microwave Wavelengths.
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DOI:
10.1038/s41566-021-00791-1
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发表时间:
2021-07
期刊:
影响因子:
35
通讯作者:
Kocabas C
Kocabas C
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
Ergoktas MS;Bakan G;Kovalska E;Le Fevre LW;Fields RP;Steiner P;Yu X;Salihoglu O;Balci S;Fal'ko VI;Novoselov K;Dryfe RAW;Kocabas C

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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 specific 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 such as active plasmonics and adaptive thermal management.
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