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Particle Manipulation Based on Optically Controlled Free Surface Hydrodynamics
Author(s) -
Varanakkottu Subramanyan Namboodiri,
George Sajan Daniel,
Baier Tobias,
Hardt Steffen,
Ewald Martina,
Biesalski Markus
Publication year - 2013
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201302111
Subject(s) - marangoni effect , microparticle , inflow , particle (ecology) , computer science , flow (mathematics) , service (business) , optical tweezers , optics , nanotechnology , materials science , physics , mechanics , geology , convection , economics , oceanography , economy
Microparticle manipulation : The photoisomerization of surfactants adsorbed at a gas–liquid interface drives a Marangoni flow that can be used for the trapping and manipulation of small particles. By switching the laser wavelength, a flow either into or away from the focal spot can be induced. The picture shows a microparticle trapped in the focal region by the inflow.