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Montelongo Y, Sikdar D, Ma Y, et al. Electrotunable nanoplasmonic liquid mirror. Nat Mater. 2017;16(11):1127-1135doi: 10.1038/nmat4969.
Montelongo, Y., Sikdar, D., Ma, Y., McIntosh, A. J. S., Velleman, L., Kucernak, A. R., Edel, J. B., & Kornyshev, A. A. (2017). Electrotunable nanoplasmonic liquid mirror. Nature materials, 16(11), 1127-1135. https://doi.org/10.1038/nmat4969
Montelongo, Yunuen, et al. "Electrotunable nanoplasmonic liquid mirror." Nature materials vol. 16,11 (2017): 1127-1135. doi: https://doi.org/10.1038/nmat4969
Montelongo Y, Sikdar D, Ma Y, McIntosh AJS, Velleman L, Kucernak AR, Edel JB, Kornyshev AA. Electrotunable nanoplasmonic liquid mirror. Nat Mater. 2017 Nov;16(11):1127-1135. doi: 10.1038/nmat4969. Epub 2017 Sep 11. PMID: 28892055.
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Nat Mater. 2017 Nov;16(11):1127-1135. doi: 10.1038/nmat4969. Epub 2017 Sep 11.

Electrotunable nanoplasmonic liquid mirror.

Nature materials

Yunuen Montelongo, Debabrata Sikdar, Ye Ma, Alastair J S McIntosh, Leonora Velleman, Anthony R Kucernak, Joshua B Edel, Alexei A Kornyshev

Affiliations

  1. Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, UK.

PMID: 28892055 DOI: 10.1038/nmat4969

Abstract

Recently, there has been a drive to design and develop fully tunable metamaterials for applications ranging from new classes of sensors to superlenses among others. Although advances have been made, tuning and modulating the optical properties in real time remains a challenge. We report on the first realization of a reversible electrotunable liquid mirror based on voltage-controlled self-assembly/disassembly of 16 nm plasmonic nanoparticles at the interface between two immiscible electrolyte solutions. We show that optical properties such as reflectivity and spectral position of the absorption band can be varied in situ within ±0.5 V. This observed effect is in excellent agreement with theoretical calculations corresponding to the change in average interparticle spacing. This electrochemical fully tunable nanoplasmonic platform can be switched from a highly reflective 'mirror' to a transmissive 'window' and back again. This study opens a route towards realization of such platforms in future micro/nanoscale electrochemical cells, enabling the creation of tunable plasmonic metamaterials.

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