Imperial College London
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ProfessorAlexeiKornyshev

Faculty of Natural Sciences, Department of Chemistry

Professor of Chemical Physics
 
 
 
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Contact

 

+44 (0)20 7594 5786a.kornyshev Website CV

 
 
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Assistant

 

Mr John Murrell +44 (0)20 7594 2845

 
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Location

 

110Molecular Sciences Research HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Sikdar:2016:10.1039/c6fd00249h,
author = {Sikdar, D and Bucher, A and Zagar, C and Kornyshev, AA},
doi = {10.1039/c6fd00249h},
journal = {Faraday Discuss},
pages = {585--602},
title = {Electrochemical plasmonic metamaterials: towards fast electro-tuneable reflecting nanoshutters},
url = {http://dx.doi.org/10.1039/c6fd00249h},
volume = {199},
year = {2016}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Self-assembling arrays of metallic nanoparticles at liquid|liquid or liquid|solid interfaces could deliver new platforms for tuneable optical systems. Such systems can switch between very-high and very-low reflectance states upon assembly and disassembly of nanoparticles at the interface, respectively. This encourages creation of electro-variably reversible mirror/window nanoplasmonic devices. However, the response time of these systems is usually limited by the rate-of-diffusion of the nanoparticles in the liquid, towards the interface and back. A large time-constant implies slow switching of the system, challenging the practical viability of such a system. Here we introduce a smart alternative to overcome this issue. We propose obtaining fast switching via electrically-induced rotation of a two-dimensional array of metal nanocuboids tethered to an ITO substrate. By applying potential to the ITO electrode the orientation of nanocuboids can be altered, which results in conversion of a highly-reflective nanoparticle layer into a transparent layer (or vice versa) within sub-second timescales. A theoretical method is developed based on the quasi-static effective-medium approach to analyse the optical response of such arrays, which is verified against full-wave simulations. Further theoretical analysis and estimates based on the potential energy of the nanoparticles in the two orientations corroborate the idea that voltage-controlled switching between the two states of a nanoparticle assembly is a viable option.
AU  - Sikdar,D
AU  - Bucher,A
AU  - Zagar,C
AU  - Kornyshev,AA
DO  - 10.1039/c6fd00249h
EP  - 602
PY  - 2016///
SN  - 1359-6640
SP  - 585
TI  - Electrochemical plasmonic metamaterials: towards fast electro-tuneable reflecting nanoshutters
T2  - Faraday Discuss
UR  - http://dx.doi.org/10.1039/c6fd00249h
UR  - http://www.ncbi.nlm.nih.gov/pubmed/28429003
UR  - http://hdl.handle.net/10044/1/48559
VL  - 199
ER  -
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