Extended-area optically induced organization of microparticles on a surface

V. Garćs-Chávez; K. Dholakia; G. C. Spalding

doi:10.1063/1.1843283

Extended-area optically induced organization of microparticles on a surface

V. Garćs-Chávez, K. Dholakia, G. C. Spalding

Department of Physics

Research output: Contribution to journal › Article › peer-review

114 Citations (Scopus)

Abstract

To extend beyond the limited field of view associated with optical tweezers, we implement a new geometry for lensless optical trapping ("LOT"). A Ronchi ruling is imaged at a sample interface beyond the critical angle for total internal reflection imposing local structure upon the optical fields. Due to the resulting transverse optical gradients, more than one thousand microparticles spanning 1 mm2 were organized into microchannels that are entirely optical in origin. A generalized approach is presented, allowing for either guiding or stable trapping, as a function of the relative intensity of the counterpropagating surface waves.

Original language	English
Article number	031106
Pages (from-to)	1-3
Number of pages	3
Journal	Applied Physics Letters
Volume	86
Issue number	3
DOIs	https://doi.org/10.1063/1.1843283
Publication status	Published - 2005 Jan 17

Bibliographical note

Funding Information:
This work was supported by the European Science Foundation, the Leverhulme Trust and the U.K. Engineering and Physical Sciences Research Council. G.C.S. is also supported by an award from the Research Corporation and by the National Science Foundation through Grant No. DMR-0216631.

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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Extended-area optically induced organization of microparticles on a surface

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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