Using indentation to characterize the poroelasticity of gels

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

doi:10.1063/1.3370354

Using indentation to characterize the poroelasticity of gels

Yuhang Hu, Xuanhe Zhao, Joost J. Vlassak, Zhigang Suo

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English (US)
Article number	121904
Journal	Applied Physics Letters
Volume	96
Issue number	12
DOIs	https://doi.org/10.1063/1.3370354
State	Published - 2010
Externally published	Yes

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Physics and Astronomy (miscellaneous)

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10.1063/1.3370354

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title = "Using indentation to characterize the poroelasticity of gels",

abstract = "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.",

author = "Yuhang Hu and Xuanhe Zhao and Vlassak, {Joost J.} and Zhigang Suo",

note = "Funding Information: The authors acknowledge the support of the NSF (Grant No. CMMI-0800161), DARPA (Grant No. W911NF-08-1-0143), MRSEC at Harvard University, and Kavli Institute at Harvard University. The authors thank Li Han for the help with the indentation experiments.",

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AU - Zhao, Xuanhe

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AU - Suo, Zhigang

N1 - Funding Information: The authors acknowledge the support of the NSF (Grant No. CMMI-0800161), DARPA (Grant No. W911NF-08-1-0143), MRSEC at Harvard University, and Kavli Institute at Harvard University. The authors thank Li Han for the help with the indentation experiments.

PY - 2010

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AB - 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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Using indentation to characterize the poroelasticity of gels

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