SCHULMAN, Rafael; TREJO, Miguel; SALEZ, Thomas; RAPHAËL, Elie; DALNOKI-VERESS, Kari

doi:10.1038/s41467-018-03346-1

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SCHULMAN, Rafael
Department of Physics and Astronomy [Hamilton, ON]

TREJO, Miguel
Laboratoire de Physico-Chimie Théorique [LPCT]

SALEZ, Thomas
Laboratoire Ondes et Matière d'Aquitaine [LOMA]
Global Station for Soft Matter, Global Institution for Collaborative Research and Education [Hokkaido]

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Nature Communications. 2018, vol. 9, n° 1, p. 982

Nature Publishing Group

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Surface stress and surface energy are fundamental quantities which characterize the interface between two materials. Although these quantities are identical for interfaces involving only fluids, the Shuttleworth effect demonstrates that this is not the case for most interfaces involving solids, since their surface energies change with strain. Crystalline materials are known to have strain-dependent surface energies, but in amorphous materials, such as polymeric glasses and elastomers, the strain dependence is debated due to a dearth of direct measurements. Here, we utilize contact angle measurements on strained glassy and elas-tomeric solids to address this matter. We show conclusively that interfaces involving poly-meric glasses exhibit strain-dependent surface energies, and give strong evidence for the absence of such a dependence for incompressible elastomers. The results provide fundamental insight into our understanding of the interfaces of amorphous solids and their interaction with contacting liquids.< Réduire

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Surface energy of strained amorphous solids

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