English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The problem of measuring nontrivial static correlations in deeply supercooledliquids made recently some progress thanks to the introduction of amorphousboundary conditions, in which a set of free particles is subject to the effectof a different set of particles frozen into their (low temperature) equilibriumpositions. In this way, one can study the crossover from nonergodic to ergodicphase, as the size of the free region grows and the effect of the confinementfades. Such crossover defines the so-called point-to-set correlation length,which has been measured in a spherical geometry, or cavity. Here, we makefurther progress in the study ofcorrelations under amorphous boundaryconditions by analyzing the equilibrium properties of a glass-forming liquid,confined in a planar ("sandwich") geometry. The mobile particles are subject toamorphous boundary conditions with the particles in the surrounding wallsfrozen into their low temperature equilibrium configurations. Compared to thecavity, the sandwich geometry has three main advantages: i) the width of thesandwich is decoupled from its longitudinal size, making the thermodynamiclimit possible; ii) for very large width, the behaviour off a single wall canbe studied; iii) we can use "anti-parallel" boundary conditions to force adomain wall and measure its excess energy. Our results confirm that amorphousboundary conditions are indeed a very useful new tool inthe study of staticproperties of glass-forming liquids, but also raise some warning about the factthat not all correlation functions that can be calculated in this frameworkgive the same qualitative results.

Static correlations functions and domain walls in glass-forming liquids: the case of a sandwich geometry