Optical trapping and manipulation of nano-objects with an apertureless probe

Patrick C. Chaumet, Adel Rahmani, Manuel Nieto-Vesperinas

Research output: Contribution to journalArticle

161 Citations (Scopus)

Abstract

We propose a novel way to trap and manipulate nano-objects above a dielectric substrate using an apertureless near-field probe. A combination of evanescent illumination and light scattering at the probe apex is used to shape the optical field into a localized, three-dimensional optical trap. We use the coupled-dipole method and the Maxwell stress tensor to provide a self-consistent description of the optical force, including retardation and the influence of the substrate. We show that small objects can be selectively captured and manipulated under realistic conditions.
Original languageEnglish
Article number123601
Pages (from-to)1-4
Number of pages4
JournalPhysical Review Letters
Volume88
Issue number12
DOIs
Publication statusPublished - 2002
Externally publishedYes

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