Optical manipulation of a dielectric particle along polygonal closed-loop geometries within a single water droplet

We report a new method to optically manipulate a single dielectric particle along closed-loop polygonal trajectories by crossing a suite of all-fiber Bessel-like beams within a single water droplet. Exploiting optical radiation pressure, this method demonstrates the circulation of a single polystyre...

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Bibliographic Details
Published inScientific reports Vol. 11; no. 1; p. 12690
Main Authors Park, Junbum, Hong, Seongjin, Lee, Yong Soo, Lee, Hyeonwoo, Kim, Seokjin, Dholakia, Kishan, Oh, Kyunghwan
Format Journal Article
LanguageEnglish
Published London Nature Publishing Group UK 16.06.2021
Nature Publishing Group
Nature Portfolio
Subjects
639/624/1107
639/766/189
Aqueous solutions
Experiments
Fiber optics
Generators
Geometry
Humanities and Social Sciences
Microfluidics
multidisciplinary
Polystyrene
Propagation
Radiation
Science
Science (multidisciplinary)
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Summary:We report a new method to optically manipulate a single dielectric particle along closed-loop polygonal trajectories by crossing a suite of all-fiber Bessel-like beams within a single water droplet. Exploiting optical radiation pressure, this method demonstrates the circulation of a single polystyrene bead in both a triangular and a rectangle geometry enabling the trapped particle to undergo multiple circulations successfully. The crossing of the Bessel-like beams creates polygonal corners where the trapped particles successfully make abrupt turns with acute angles, which is a novel capability in microfluidics. This offers an optofluidic paradigm for particle transport overcoming turbulences in conventional microfluidic chips.
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ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-021-92209-9