Plasmonic linear nanomotor using lateral optical forces

Tanaka, Y.Y., Albella, P., Rahmani, M. ORCID: 0000-0001-9268-4793, Giannini, V., Maier, S.A. and Shimura, T., 2020. Plasmonic linear nanomotor using lateral optical forces. Science Advances, 6 (45): eabc3726. ISSN 2375-2548

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Abstract

Optical force is a powerful tool to actuate micromachines. Conventional approaches often require focusing and steering an incident laser beam, resulting in a bottleneck for the integration of the optically actuated machines. Here, we propose a linear nanomotor based on a plasmonic particle that generates, even when illuminated with a plane wave, a lateral optical force due to its directional side scattering. This force direction is determined by the orientation of the nanoparticle rather than a field gradient or propagation direction of the incident light. We demonstrate the arrangements of the particles allow controlling the lateral force distributions with the resolution beyond the diffraction limit, which can produce movements, as designed, of microobjects in which they are embedded without shaping and steering the laser beam. Our nanomotor to engineer the experienced force can open the door to a new class of micro/nanomechanical devices that can be entirely operated by light.

Item Type:	Journal article
Publication Title:	Science Advances
Creators:	Tanaka, Y.Y., Albella, P., Rahmani, M., Giannini, V., Maier, S.A. and Shimura, T.
Publisher:	American Association for the Advancement of Science
Date:	November 2020
Volume:	6
Number:	45
ISSN:	2375-2548
Identifiers:	Number Type 10.1126/sciadv.abc3726 DOI 1405706 Other
Divisions:	Schools > School of Science and Technology
Record created by:	Jonathan Gallacher
Date Added:	15 Mar 2021 21:10
Last Modified:	31 May 2021 15:05
URI:	https://irep.ntu.ac.uk/id/eprint/42518

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