Multispectral graphene-based electro-optical surfaces with reversible tunability from visible to microwave wavelengths

M. Said Ergoktas; Gokhan Bakan; Evgeniya Kovalska; Lewis W. Le Fevre; Richard P. Fields; Pietro Steiner; Xiaoxiao Yu; Omer Salihoglu; Sinan Balci; Vladimir I. Fal’ko; Kostya S. Novoselov; Robert A.W. Dryfe; Coskun Kocabas

doi:10.1038/s41566-021-00791-1

Multispectral graphene-based electro-optical surfaces with reversible tunability from visible to microwave wavelengths

M. Said Ergoktas, Gokhan Bakan, Evgeniya Kovalska, Lewis W. Le Fevre, Richard P. Fields, Pietro Steiner, Xiaoxiao Yu, Omer Salihoglu, Sinan Balci, Vladimir I. Fal’ko, Kostya S. Novoselov, Robert A.W. Dryfe, Coskun Kocabas

Research output: Contribution to journal › Article › peer-review

163 Citations (SciVal)

Abstract

Optical materials with colour changing abilities have been explored for use in display devices¹, smart windows^2,3 or in the modulation of visual appearance^4–6. 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. The unique colour changing capability, together with area-selective intercalation, inspires the 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.

Original language	English
Pages (from-to)	493-498
Number of pages	6
Journal	Nature Photonics
Volume	15
Issue number	7
Early online date	5 Apr 2021
DOIs	https://doi.org/10.1038/s41566-021-00791-1
Publication status	Published - 31 Jul 2021

Bibliographical note

Publisher Copyright:
© 2021, The Author(s), under exclusive licence to Springer Nature Limited.

Acknowledgements

This research is supported by the European Research Council through an ERC Consolidator Grant (grant no. 682723, SmartGraphene) and an ERC PoC Grant (grant no. 899908, SmartIR). In addition, we acknowledge the Graphene Engineering Innovation Centre (GEIC) for access to the CVD system.

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics

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Cite this

Ergoktas, M. S., Bakan, G., Kovalska, E., Le Fevre, L. W., Fields, R. P., Steiner, P., Yu, X., Salihoglu, O., Balci, S., Fal’ko, V. I., Novoselov, K. S., Dryfe, R. A. W., & Kocabas, C. (2021). Multispectral graphene-based electro-optical surfaces with reversible tunability from visible to microwave wavelengths. Nature Photonics, 15(7), 493-498. https://doi.org/10.1038/s41566-021-00791-1

Ergoktas, MS, Bakan, G, Kovalska, E, Le Fevre, LW, Fields, RP, Steiner, P, Yu, X, Salihoglu, O, Balci, S, Fal’ko, VI, Novoselov, KS, Dryfe, RAW & Kocabas, C 2021, 'Multispectral graphene-based electro-optical surfaces with reversible tunability from visible to microwave wavelengths', Nature Photonics, vol. 15, no. 7, pp. 493-498. https://doi.org/10.1038/s41566-021-00791-1

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abstract = "Optical materials with colour changing abilities have been explored for use in display devices1, smart windows2,3 or in the modulation of visual appearance4–6. 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. The unique colour changing capability, together with area-selective intercalation, inspires the 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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Multispectral graphene-based electro-optical surfaces with reversible tunability from visible to microwave wavelengths

Abstract

Bibliographical note

Acknowledgements

ASJC Scopus subject areas

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