Gilroy, C., McKay, K., Devine, M., Webster, R. W.H., Gadegaard, N. , Karimullah, A. , Maclaren, D. and Kadodwala, M. (2021) Active chiral plasmonics: flexoelectric control of nanoscale chirality. Advanced Photonics Research, 2(1), 2000062. (doi: 10.1002/adpr.202000062)
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Abstract
The ability to electrically control the optical properties of metamaterials is an essential capability required for technological innovation. The creation of dynamic electrically tuneable metamaterials in the visible and near IR region are important for a range of imaging and fibre optic technologies. However current approaches require complex nanofabrication processes which are incompatible for low cost device production. Here, we report a novel simple approach for electrical control of optical properties which utilises a flexoelectric dielectric element to electromechanically manipulate the form factor of a chiral nanostructure. By altering the dimensions of the chiral nanostructure, we allow the polarisation properties of light to be electrically controlled. The flexoelectric element is part of a composite metafilm that is templated on to a nanostructured polymer substrate. Since the flexoelectric element does not require in situ high temperature annealing it can be readily combined with polymer‐based substrates produced by high throughput methods. This is not the case for piezoelectric elements, routinely used in microelectromechanical (MEM) devices which require high temperature processing. Consequently, combining amorphous flexoelectric dielectric and low‐cost polymer‐based materials provides a route to the high throughput production of electrically responsive disposable metadevices.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Kadodwala, Professor Malcolm and MacLaren, Professor Donald and McKay, Katie and Karimullah, Dr Affar and Webster, Mr Robert and Gilroy, Mr Cameron and Gadegaard, Professor Nikolaj |
| Authors: | Gilroy, C., McKay, K., Devine, M., Webster, R. W.H., Gadegaard, N., Karimullah, A., Maclaren, D., and Kadodwala, M. |
| College/School: | College of Science and Engineering > School of Chemistry College of Science and Engineering > School of Engineering > Biomedical Engineering College of Science and Engineering > School of Physics and Astronomy |
| Journal Name: | Advanced Photonics Research |
| Publisher: | Wiley |
| ISSN: | 2699-9293 |
| ISSN (Online): | 2699-9293 |
| Published Online: | 22 October 2020 |
| Copyright Holders: | Copyright © 2020 The Authors |
| First Published: | First published in Advanced Photonics Research 2(1): 2000062 |
| Publisher Policy: | Reproduced under a Creative Commons License |
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