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A surface with stress, extensional elasticity, and bending stiffness.
Soft Matter. 2019 May 08; 15(18):3817-3827.SM

Abstract

We demonstrate that the surface of a commonly used polydimethylsiloxane formulation (PDMS, Sylgard 184) treated by ultraviolet ozonolysis (UVO) has significant surface stress, considerable extensional elasticity (the "Shuttleworth Effect"), and surface bending elasticity. For soft solids, phenomena such as wetting, contact, surface flattening, and stiffening by liquid inclusions are often governed by their surface, which is usually represented by a liquid-like constant surface stress. Whether the surfaces of soft solids can have more complex constitutive response is actively debated. We studied the deformation of three surface-patterned materials systems: untreated polydimethylsiloxane (PDMS), an organogel, and patterned PDMS with surface treatment by UVO. The last of these three, we found, has complex surface elasticity. This is analogous to the situation for liquids in which the presence of a second phase at the interface yields Gibbs elasticity. Our finding is of broad applicability because in soft solids the behavior of the surface can often dominate bulk deformation.

Authors+Show Affiliations

Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, PA 18017, USA. anj6@lehigh.edu.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30993278

Citation

Lapinski, Nicole, et al. "A Surface With Stress, Extensional Elasticity, and Bending Stiffness." Soft Matter, vol. 15, no. 18, 2019, pp. 3817-3827.
Lapinski N, Liu Z, Yang S, et al. A surface with stress, extensional elasticity, and bending stiffness. Soft Matter. 2019;15(18):3817-3827.
Lapinski, N., Liu, Z., Yang, S., Hui, C. Y., & Jagota, A. (2019). A surface with stress, extensional elasticity, and bending stiffness. Soft Matter, 15(18), 3817-3827. https://doi.org/10.1039/c9sm00075e
Lapinski N, et al. A Surface With Stress, Extensional Elasticity, and Bending Stiffness. Soft Matter. 2019 May 8;15(18):3817-3827. PubMed PMID: 30993278.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A surface with stress, extensional elasticity, and bending stiffness. AU - Lapinski,Nicole, AU - Liu,Zezhou, AU - Yang,Shu, AU - Hui,Chung-Yuen, AU - Jagota,Anand, PY - 2019/4/18/pubmed PY - 2019/4/18/medline PY - 2019/4/18/entrez SP - 3817 EP - 3827 JF - Soft matter JO - Soft Matter VL - 15 IS - 18 N2 - We demonstrate that the surface of a commonly used polydimethylsiloxane formulation (PDMS, Sylgard 184) treated by ultraviolet ozonolysis (UVO) has significant surface stress, considerable extensional elasticity (the "Shuttleworth Effect"), and surface bending elasticity. For soft solids, phenomena such as wetting, contact, surface flattening, and stiffening by liquid inclusions are often governed by their surface, which is usually represented by a liquid-like constant surface stress. Whether the surfaces of soft solids can have more complex constitutive response is actively debated. We studied the deformation of three surface-patterned materials systems: untreated polydimethylsiloxane (PDMS), an organogel, and patterned PDMS with surface treatment by UVO. The last of these three, we found, has complex surface elasticity. This is analogous to the situation for liquids in which the presence of a second phase at the interface yields Gibbs elasticity. Our finding is of broad applicability because in soft solids the behavior of the surface can often dominate bulk deformation. SN - 1744-6848 UR - https://www.unboundmedicine.com/medline/citation/30993278/A_surface_with_stress_extensional_elasticity_and_bending_stiffness_ L2 - https://doi.org/10.1039/c9sm00075e DB - PRIME DP - Unbound Medicine ER -
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