Modeling of Ionic Hydrogel Kinetics in Buffered Solutions

	Nanotech 2001 Vol. 1 Technical Proceedings of the 2001 International Conference on Modeling and Simulation of Microsystems Chapter 2: Numerics, Algorithms
	Modeling of Ionic Hydrogel Kinetics in Buffered Solutions
Authors:	R.R. Ohs, S.K. De and N.R. Aluru
Affilation:	University of Illinois at Urbana-Champaign, US
Pages:	7 - 10
Keywords:	hydrogels, simulation, swelling, experiments, meshless method
Abstract:	In this paper, we present the meshless Finite Cloud Method (FCM) for the solution of a time-dependent partial differential equation governing ionic gel swelling. Using a point distribution, FCM constructs interpolation functions without assuming any connectivity between points. A collocation approach forces the unknowns at every point to satisfy the governing equation or boundary condition. To validate the model, a cylindrical hydrogel was fabricated and subjected to step changes in solution pH to characterize the hydrogel's dynamic behavior. The hydrogel's equilibrium behavior was matched using a thermodynamic model. Numerical results show good agreement with experimental data.
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ISBN:	0-9708275-0-4
Pages:	638
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