ProgramMaster Logo
Conference Tools for 2023 TMS Annual Meeting & Exhibition
Register as a New User
Submit An Abstract
Propose A Symposium
Presenter/Author Tools
Organizer/Editor Tools
About this Abstract
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 Contact Mechanics of Soft Hydrated Materials
Author(s) Yang Lai, Dongjing He, Yuhang Hu
On-Site Speaker (Planned) Yuhang Hu
Abstract Scope Soft gels and biological tissues resemble similar molecular structures - polymeric networks plus solvents. Mechanical characterization of these materials is challenging because of the extreme softness and complex time-dependent behavior. Comparatively, indentation is practically simple. In this work, we identify the underlying physics that governs the time-dependent behavior of gels and soft tissues and find scaling relations that allow for a unified solution and master curve independent of indenter geometries to be obtained. Besides, we also use indentation to study the adhesion hysteresis of these materials. Combining a unique multi-length scale indentation technique and rigorous theoretical analysis, we can decouple the time-dependent adhesion from the time-dependent bulk behaviors and extract the intrinsic interfacial properties including adhesion energy, separation distance, and cohesive strength. We also show the transition of mechanism from uniform bond breaking to Griffith type of fracture as the contact size goes across a big range of length scales.
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

Questions about ProgramMaster? Contact