Spatial measurement of spurious forces with optical tweezers

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dc.citation.epage7en_US
dc.citation.spage1en_US
dc.citation.volumeNumber8785en_US
dc.contributor.authorBordeu, I.en_US
dc.contributor.authorVolpe, Giovannien_US
dc.contributor.authorStaforelli, J. P.en_US
dc.coverage.spatialPorto, Portugalen_US
dc.date.accessioned2016-02-08T12:05:50Zen_US
dc.date.available2016-02-08T12:05:50Zen_US
dc.date.issued2013en_US
dc.departmentDepartment of Physicsen_US
dc.descriptionDate of Conference: 22-26 July 2013en_US
dc.descriptionConference Name: 8th Iberoamerican Optics Meeting and 11th Latin American Meeting on Optics, Lasers, and Applications, 2013en_US
dc.description.abstractThe study of diffusion in a crowded and complex environment, such as inside a cell or within a porous medium, is of fundamental importance for science and technology. Combining blinking holographic optical tweezers and sub-pixel video microscopy permits one to study Brownian motion in confined geometries. In this work, in particular, we have studied the Brownian motion of two colloidal particles interacting hydrodynamically with each other. The proximity between the two microspheres induces a space-dependence in the particles diffusion coefficient and, therefore, a spurious drift. We measure this drift and evaluate the magnitude of the spurious force associated with it. We present the optoelectronic tools employed in the experiment and we discuss the experimental results.en_US
dc.description.provenanceMade available in DSpace on 2016-02-08T12:05:50Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 70227 bytes, checksum: 26e812c6f5156f83f0e77b261a471b5a (MD5) Previous issue date: 2013en
dc.identifier.doi10.1117/12.2027533en_US
dc.identifier.issn0277-786Xen_US
dc.identifier.urihttp://hdl.handle.net/11693/27938en_US
dc.language.isoEnglishen_US
dc.publisherSPIEen_US
dc.relation.isversionofhttp://dx.doi.org/10.1117/12.2027533en_US
dc.source.titleProceedings of SPIE Vol. 8785, 8th Iberoamerican Optics Meeting and 11th Latin American Meeting on Optics, Lasers, and Applications, 2013en_US
dc.subjectBlinking optical tweezersen_US
dc.subjectBrownian motionen_US
dc.subjectDiffusion gradientsen_US
dc.subjectDigital video microscopyen_US
dc.subjectHolographic optical tweezersen_US
dc.subjectStochastic differential equationsen_US
dc.titleSpatial measurement of spurious forces with optical tweezersen_US
dc.typeConference Paperen_US

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