Direct observation of molecular cooperativity near the glass transition
Disordered Systems and Neural Networks
2016-03-23 v1 Soft Condensed Matter
Abstract
We describe direct observations of molecular cooperativity near the glass transition in poly-vinyl-acetate (PVAc), through nanometer-scale probing of dielectric fluctuations. Molecular clusters switched spontaneously between two to four distinct configurations, producing complex random-telegraph-signals (RTS). Analysis of the RTS and their power spectra shows that individual clusters exhibit both transient dynamical heterogeneity and non-exponential kinetics.
Keywords
Cite
@article{arxiv.cond-mat/0012245,
title = {Direct observation of molecular cooperativity near the glass transition},
author = {E. Vidal Russell and N. E. Israeloff},
journal= {arXiv preprint arXiv:cond-mat/0012245},
year = {2016}
}
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