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Issue 38, 2017
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Pinning susceptibility: a novel method to study growth of amorphous order in glass-forming liquids

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Abstract

The existence and growth of amorphous order in supercooled liquids approaching glass transition is a subject of intense research. Even after decades of work, there is still no clear consensus on the molecular mechanisms that lead to a rapid slowing down of liquid dynamics approaching this putative transition. The existence of a correlation length associated with amorphous order has recently been postulated and has also been estimated using multi-point correlation functions which cannot be calculated easily in experiments. Thus the study of growing amorphous order remains mostly restricted to systems like colloidal glasses and simulations of model glass-forming liquids. In this work, we propose an experimentally realizable yet simple susceptibility to study the growth of amorphous order. We then demonstrate the validity of this approach for a few well-studied model supercooled liquids and obtain results which are consistent with other conventional methods.

Graphical abstract: Pinning susceptibility: a novel method to study growth of amorphous order in glass-forming liquids

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Publication details

The article was received on 17 Jun 2017, accepted on 16 Aug 2017 and first published on 16 Aug 2017


Article type: Paper
DOI: 10.1039/C7SM01202K
Citation: Soft Matter, 2017,13, 6929-6937
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    Pinning susceptibility: a novel method to study growth of amorphous order in glass-forming liquids

    R. Das, S. Chakrabarty and S. Karmakar, Soft Matter, 2017, 13, 6929
    DOI: 10.1039/C7SM01202K

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