Picolitre viscometry using optically rotated particles

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dc.creatorParkin, Simon J.
dc.creatorKnoener, Gregor
dc.creatorNieminen, Timo A.
dc.creatorHeckenberg, Norman R.
dc.creatorRubinsztein-Dunlop, Halina
dc.date2007-11-01
dc.date.accessioned2026-07-07T11:38:28Z
dc.date.available2026-07-07T11:38:28Z
dc.descriptionImportant aspects in the field of microrheology are the studies of the viscosity of fluids within structures with micron dimensions and fluid samples where only microlitre volumes are available. We have quantitatively investigated the performance and accuracy of a microviscometer based on rotating optical tweezers, that requires as little as one microlitre of sample. We have characterised our microviscometer, including effects due to heating, and demonstrated its ability to perform measurements over a large dynamic range of viscosities (at least two orders of magnitude). We have also inserted a probe particle through the membrane of a cell and measured the viscosity of the intramembranous contents. Viscosity measurements of tears have also been made with our microviscometer, which demonstrate its potential use to study un-stimulated eye fluid.
dc.description5 pages, 7 figures
dc.identifierhttps://arxiv.org/abs/0711.0060
dc.identifierhttp://arxiv.org/abs/0711.0060
dc.identifierPhys.Rev.E76:041507,2007
dc.identifierdoi:10.1103/PhysRevE.76.041507
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/199578
dc.subjectOptics
dc.subjectBiological Physics
dc.subjectFluid Dynamics
dc.subjectInstrumentation and Detectors
dc.titlePicolitre viscometry using optically rotated particles
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