Open AccessFlow-assisted Single-beam Optothermal Manipulation of Microparticles
Author(s) -
Yangyang Liu,
Andrew Poon
Publication year - 2010
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.018483
Subject(s) - levitation , optical tweezers , materials science , optical force , optics , drag , beam (structure) , laser , particle (ecology) , capillary action , tweezers , colloid , laser beams , absorption (acoustics) , nanotechnology , chemistry , physics , mechanics , oceanography , quantum mechanics , composite material , magnet , geology
An optothermal tweezer was developed with a single-beam laser at 1550 nm for manipulation of colloidal microparticles. Strong absorption in water can thermally induce a localized flow, which exerts a Stokes' drag on the particles that complements the gradient force. Long-range capturing of 6 microm polystyrene particles over approximately 176 microm was observed with a tweezing power of approximately 7 mW. Transportation and levitation, targeted deposition and selective levitation of particles were explored to experimentally demonstrate the versatility of the optothermal tweezer as a multipurpose particle manipulation tool.