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

We investigate the near-surface relaxation of freestanding atactic\glsdesc{ps} films with molecular dynamics simulations. As in previouscoarse-grained simulations, relaxation times for backbone segments and phenylrings are linked to their bulk relaxation times via a power law couplingrelation. Variation of the coupling exponent with distance from the surface isconsistent with depth-dependent activation barriers. We also quantify areduction of dynamical heterogeneity at the interface which can be interpretedin the framework of cooperative models for glassy dynamics.

Energy barriers and cooperative motion at the surface of freestanding glassy polystyrene films