Using indentation to characterize the poroelasticity of gels | Zendy

Yuhang Hu | Zendy; Xuanhe Zhao | Zendy; Joost J. Vlassak | Zendy; Zhigang Suo | Zendy

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Using indentation to characterize the poroelasticity of gels

Author(s) -

Yuhang Hu,

Xuanhe Zhao,

Joost J. Vlassak,

Zhigang Suo

Publication year - 2010

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.3370354

Subject(s) - indentation , poromechanics , materials science , conical surface , composite material , permeability (electromagnetism) , elasticity (physics) , porosity , porous medium , chemistry , membrane , biochemistry

When an indenter is pressed into a gel to a fixed depth, the solvent in the gel migrates, and the force on the indenter relaxes. Within the theory of poroelasticity, the force relaxation curves for indenters of several types are obtained in a simple form, enabling indentation to be used with ease as a method for determining the elastic constants and permeability of the gel. The method is demonstrated with a conical indenter on an alginate hydrogel.

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