Document Detail

Direct observation of hydrodynamic rotation-translation coupling between two colloidal spheres.
MedLine Citation:
PMID:  17280329     Owner:  NLM     Status:  MEDLINE    
By combining optical tweezers with polarization microscopy, the hydrodynamic coupling between position and orientation fluctuations in a pair of colloidal spheres has been measured. Imaging of birefringent particles under crossed polarizers allows for the simultaneous determination of the positions and orientations of both particles. The temporal cross-correlation function between random displacements of one particle and orientation fluctuations of its neighbor allows for the quantification of the hydrodynamic rotation-translation coupling between the spheres. Our results are in good agreement with predictions for the hydrodynamic mobility tensors calculated in the creeping-flow limit of the Navier-Stokes equation.
S Martin; M Reichert; H Stark; T Gisler
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2006-12-15
Journal Detail:
Title:  Physical review letters     Volume:  97     ISSN:  0031-9007     ISO Abbreviation:  Phys. Rev. Lett.     Publication Date:  2006 Dec 
Date Detail:
Created Date:  2007-02-06     Completed Date:  2007-07-06     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401141     Medline TA:  Phys Rev Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  248301     Citation Subset:  IM    
Universität Konstanz, Fachbereich Physik, 78457 Konstanz, Germany.
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MeSH Terms
Colloids / chemistry*
Microscopy / methods
Models, Theoretical
Optical Tweezers*
Reg. No./Substance:

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