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Proceedings Paper

Chirality enables unusual optical force (presentation video)
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Paper Abstract

Light can exert radiation pressure on any object it encounters and that resulting optical force can be used to manipulate particles. It is natural to expect that light should push a particle forward. However, our results indicate that a lateral force can be induced in a direction perpendicular to that of the incident photon momentum if a chiral particle is placed above a substrate that does not break any left-right symmetry. Analytical theory shows that the coupling between structural chirality and the light reflected from the substrate surface induces this sideway force that pushes chiral particles with opposite handedness in opposite directions.

Paper Details

Date Published: 17 August 2014
PDF: 1 pages
Proc. SPIE 9163, Plasmonics: Metallic Nanostructures and Their Optical Properties XII, 91631V (17 August 2014); doi: 10.1117/12.2062811
Show Author Affiliations
Shubo Wang, The Hong Kong University of Science and Technology (Hong Kong, China)
Che Ting Chan, Hong Kong Univ. of Science and Technology (Hong Kong, China)


Published in SPIE Proceedings Vol. 9163:
Plasmonics: Metallic Nanostructures and Their Optical Properties XII
Allan D. Boardman, Editor(s)

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