Spatially-resolved rotational microrheology with an optically-trapped sphere

Bennett, James S., Gibson, Lachlan J., Kelly, Rory M., Brousse, Emmanuel, Baudisch, Bastian, Preece, Daryl, Nieminen, Timo A., Nicholson, Timothy, Heckenberg, Norman R. and Rubinsztein-Dunlop, Halina (2013) Spatially-resolved rotational microrheology with an optically-trapped sphere. Scientific Reports, 3 1759.1-1759.4. doi:10.1038/srep01759


Author Bennett, James S.
Gibson, Lachlan J.
Kelly, Rory M.
Brousse, Emmanuel
Baudisch, Bastian
Preece, Daryl
Nieminen, Timo A.
Nicholson, Timothy
Heckenberg, Norman R.
Rubinsztein-Dunlop, Halina
Title Spatially-resolved rotational microrheology with an optically-trapped sphere
Journal name Scientific Reports   Check publisher's open access policy
ISSN 2045-2322
Publication date 2013-05
Year available 2013
Sub-type Article (original research)
DOI 10.1038/srep01759
Open Access Status DOI
Volume 3
Start page 1759.1
End page 1759.4
Total pages 5
Place of publication London, United Kingdom
Publisher Nature Publishing Group
Collection year 2014
Language eng
Formatted abstract
We have developed a microrheometer, based on optical tweezers, in which hydrodynamic coupling between the probe and fluid boundaries is dramatically reduced relative to existing microrheometers. Rotational Brownian motion of a birefringent microsphere within an angular optical trap is observed by measuring the polarisation shifts of transmitted light. Data gathered in this manner, in the strongly viscoelastic fluid Celluvisc, quantitatively agree with the results of conventional (bulk) rheometry. Our technique will significantly reduce the smallest sample volumes which may be reliably probed, further extending the study of rare, difficult to obtain or highly nonhomogeneous fluids.
Keyword Tweezers
Rheology
Fluids
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
School of Chemical Engineering Publications
Official 2014 Collection
 
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