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Optical gecko toe: optically controlled attractive near-field forces between plasmonic metamaterials and dielectric or metal surfaces

Zhang, J., MacDonald, K.F. and Zheludev, N. (2012) Optical gecko toe: optically controlled attractive near-field forces between plasmonic metamaterials and dielectric or metal surfaces Physical Review B, 85 (doi:10.1103/PhysRevB.85.205123).

Record type: Article

Abstract

On the mesoscopic scale, electromagnetic forces are of fundamental importance to an enormously diverse range of systems, from optical tweezers to the adhesion of gecko toes. Here we show that a strong light-driven force may be generated when a plasmonic metamaterial is illuminated in close proximity to a dielectric or metal surface. This near-field force can exceed radiation pressure and Casimir forces to provide an optically controlled adhesion mechanism mimicking the gecko toe: At illumination intensities of just a few tens of nW/µm2 it is sufficient to overcome the Earth’s gravitational pull.

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Published date: 14 May 2012
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 339961
URI: http://eprints.soton.ac.uk/id/eprint/339961
ISSN: 1550-235X
PURE UUID: 69bd5460-b86d-42f5-a1df-298867574b0e
ORCID for K.F. MacDonald: ORCID iD orcid.org/0000-0002-3877-2976

Catalogue record

Date deposited: 06 Jun 2012 12:18
Last modified: 04 Sep 2017 16:31

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Contributors

Author: J. Zhang
Author: K.F. MacDonald ORCID iD
Author: N. Zheludev

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