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Microfabrication Of Hydrogel Substrates Of Tunable Young'S Modulus

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Abstract

Much is known about the effects of matrix stiffness and matrix topography on cell behavior, however they are seldom investigated in tandem. Presented and validated here is a micromolding method to introduce topographical features onto polyacrylamide (PA) substrates of tunable Young's modulus (E ). Feature fidelity is largely influenced by hydrogel swelling and most efficient on gels with a crosslinker concentration above 4.5%. However, this swelling does not affect the spacing of surface patterned ligands on two-dimensional PA gels. Bovine aortic endothelial cells (BAECs) cultured on linear micromolded features exhibit greater degrees of contact guidance with greater substrate E . Also described are applications of micromolding for future studies in cell mechanics.

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2012-01-31

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Keywords

microfabrication; hydrogel; Youngs modulus

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Union Local

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Committee Chair

King, Cynthia A.

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Committee Member

Bonassar, Lawrence
Chu, Chih-Chang

Degree Discipline

Biomedical Engineering

Degree Name

M.S., Biomedical Engineering

Degree Level

Master of Science

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Government Document

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dissertation or thesis

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