In situ measurement of localization error in particle tracking microrheology
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397_2018_1117_ReferencePDF.pdf
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Author(s)
Josephson, Lilian L
Swan, James W
Furst, Eric M
Date Issued
October 27, 2018
Publisher
Springer Berlin Heidelberg
Version
Author's final manuscript
Abstract
Abstract
A method is presented to estimate the static error 𝜖 in a multiple particle tracking microrheology experiment. This in situ estimate of 𝜖 is measured under the same conditions of the material under test, and without any additional experiments. The correction of the mean-squared displacement by the in situ method is potentially more reliable than methods that rely on characterizing 𝜖 in a separate gel sample. With the true mean-squared displacements accessible at short lag times, experimental artifacts introduced by static error can be distinguished from true rheological properties, even in highly viscous (>10,000 mPa⋅s) samples.
MIT Department
Massachusetts Institute of Technology. Department of Chemical Engineering
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Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1007/s00397-018-1117-5
