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Issue 14, 2012
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Truncated correlations in video microscopy of colloidal solids

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Abstract

Studies by video microscopy on fluctuating colloids measure the real-space correlations in particle motion. This set of correlations is then treated as a matrix, in order to study the spectrum and mode structure. We show that in general the deduced modes are modified by the truncation of the full real-space correlations. We perform a theoretical analysis of the truncation, find the boundary conditions imposed by the truncation, and propose practical windowing strategies to eliminate artefacts. We study the problem from various perspectives, to compile a survey for experimentalists.

Graphical abstract: Truncated correlations in video microscopy of colloidal solids

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Article information


Submitted
06 Nov 2011
Accepted
18 Jan 2012
First published
27 Feb 2012

Soft Matter, 2012,8, 3864-3874
Article type
Paper

Truncated correlations in video microscopy of colloidal solids

M. Schindler and A. C. Maggs, Soft Matter, 2012, 8, 3864
DOI: 10.1039/C2SM07117G

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