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Meeting 2023 TMS Annual Meeting & Exhibition
Symposium Frontiers of Materials Award Symposium: Functional Composition Control of Surface Mechanics in Soft, Water-swollen Gels
Presentation Title Soft Surface Layers on Swollen Gels Mediate Their Contact and Sliding Mechanics
Author(s) Alison C. Dunn
On-Site Speaker (Planned) Alison C. Dunn
Abstract Scope Water content and mobility determine the properties and performance of hydrogels. At the surface of a hydrogel, the swelling causes a soft surface gradient layer due to the boundary with the open bath. We have developed methods to estimate the thickness and character of the gradient layers using instrumented probe techniques at the nanoscale and microscale. In this talk, I will highlight the ways in which this soft gradient layer redistributes the force applied in contacting situations, facilitates robust low friction, and allows for unique adhesive properties.
Proceedings Inclusion? Planned: None Selected


Contact Mechanics of Soft Hydrated Materials
Controlling Lubricity of Interfaces with Charged Hydrogels
Friction of Thin Hydrogel Films: Disentangling the Contributions of Poroelastic Flow and Interface Molecular Interactions
Hydrogel Structure and Surface Physics
Soft Surface Layers on Swollen Gels Mediate Their Contact and Sliding Mechanics

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