Optical application and measurement of torque on microparticles of isotropic nonabsorbing material

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dc.creatorBishop, Alexis I.
dc.creatorNieminen, Timo A.
dc.creatorHeckenberg, Norman R.
dc.creatorRubinsztein-Dunlop, Halina
dc.date2003-09-30
dc.date.accessioned2026-07-07T05:50:07Z
dc.date.available2026-07-07T05:50:07Z
dc.descriptionWe show how it is possible to controllably rotate or align microscopic particles of isotropic nonabsorbing material in a TEM00 Gaussian beam trap, with simultaneous measurement of the applied torque using purely optical means. This is a simple and general method of rotation, requiring only that the particle is elongated along one direction. Thus, this method can be used to rotate or align a wide range of naturally occurring particles. The ability to measure the applied torque enables the use of this method as a quantitative tool--the rotational equivalent of optical tweezers based force measurement. As well as being of particular value for the rotation of biological specimens, this method is also suitable for the development of optically-driven micromachines.
dc.description8 pages, 6 figures
dc.identifierhttps://arxiv.org/abs/physics/0309122
dc.identifierhttp://arxiv.org/abs/physics/0309122
dc.identifierPhysical Review A 68, 033802 (2003)
dc.identifierdoi:10.1103/PhysRevA.68.033802
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/85614
dc.subjectOptics
dc.titleOptical application and measurement of torque on microparticles of isotropic nonabsorbing material
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