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Stochastic Localization of Microswimmers by Photon Nudging

Author(s): Bregulla, Andreas P; Yang, Haw; Cichos, Frank

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Abstract: Force free trapping and steering of single photophoretically self-propelled Janus type particles using a feedback mechanism is experimentally demonstrated. Realtime information on particle position and orientation is used to switch the self-propulsion mechanism of the particle optically. The orientational Brownian motion of the particle thereby provides the reorientation mechanism for the microswimmer. The particle size dependence of the photophoretic propulsion velocity reveals that photon nudging provides an increased position accuracy for decreasing particle radius. The explored steering mechanism is suitable for navigation in complex biological environments and in depth studies of collective swimming effects.
Publication Date: 22-Jul-2014
Citation: Bregulla, Andreas P, Yang, Haw, Cichos, Frank. "Stochastic Localization of Microswimmers by Photon Nudging" ACS Nano, (7), 8, 6542 - 6550, doi:10.1021/nn501568e
DOI: doi:10.1021/nn501568e
ISSN: 1936-0851
EISSN: 1936-086X
Pages: 6542 - 6550
Type of Material: Journal Article
Journal/Proceeding Title: ACS Nano
Version: This is the author’s final manuscript. All rights reserved to author(s).

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