Communication: Evidence of dynamic heterogeneity in glassy polymer monolayers from interface microrheology measurements

Kandar, AK and Bhattacharya, R and Basu, JK (2010) Communication: Evidence of dynamic heterogeneity in glassy polymer monolayers from interface microrheology measurements. In: Journal of Chemical Physics, 133 (7). 071102-1.

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Abstract

We have developed a novel nanoparticle tracking based interface microrheology technique to perform in situ studies on confined complex fluids. To demonstrate the power of this technique, we show, for the first time, how in situ glass formation in polymers confined at air-water interface can be directly probed by monitoring variation of the mean square displacement of embedded nanoparticles as a function of surface density. We have further quantified the appearance of dynamic heterogeneity and hence vitrification in polymethyl methacrylate monolayers above a certain surface density, through the variation of non-Gaussian parameter of the probes. (C) 2010 American Institute of Physics. [doi:10.1063/1.3471584].

Item Type:	Journal Article
Publication:	Journal of Chemical Physics
Publisher:	American Institute of Physics
Additional Information:	Copyright of this article belongs to American Institute of Physics.
Keywords:	Argon;fine structure;infrared spectra;intramolecular mechanics;krypton;neon;water.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	15 Sep 2010 11:50
Last Modified:	19 Sep 2010 06:16
URI:	http://eprints.iisc.ac.in/id/eprint/32134

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