Wen, K;
Zhang, Z;
Jiang, X;
He, J;
Yang, J;
(2020)
Numerical Study of a Polarization Selective Visual Optical Switch.
Applied Sciences
, 10
(15)
p. 5246.
10.3390/app10155246.
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Abstract
The subwavelength structure based on metamaterial has been widely used in the application of structure color due to its unique characteristics. Here, a composite structure consisting of a circular hole and different number of metal strips is proposed. By changing the polarization direction of the incident light, the resonance peak in the visible light range shifts, and the material presents different colors. At the same time, take advantage of the shift of the resonance peak, a plasmonic optical switch, of which on/off states can be indicated by the structural color, is constructed, and the maximum contrast ratio is more than 20 dB. In addition, by means of changing the geometric parameters and materials of the metal strip, the colors presented basically cover the whole visible light range. This method theoretically proves the feasibility of using subwavelength structure to construct visual plasmonic optical switch using structural color in the visible light range, which provides a broad prospect for the application of multiple physical mechanism in nanostructure design.
| Type: | Article |
|---|---|
| Title: | Numerical Study of a Polarization Selective Visual Optical Switch |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.3390/app10155246 |
| Publisher version: | https://doi.org/10.3390/app10155246 |
| Language: | English |
| Additional information: | This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
| Keywords: | surface plasmon; structure color; polarization selectivity; optical switch |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Engineering Science Faculty Office |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10107312 |
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