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Electrically Modulated Drug Delivery using Nanoporous Electrodes

Published online by Cambridge University Press:  31 January 2011

David B. Robinson
Affiliation:
drobins@sandia.gov, Sandia National Laboratories, PO Box 969 MS 9291, Livermore, California, 94551, United States
Shaun D. Gittard
Affiliation:
fakeemail9@scholarone.com, University of North Carolina, Chapel Hill, North Carolina, United States
C.-A. Max Wu
Affiliation:
fakeemail10@scholarone.com, Sandia National Laboratories, Livermore, California, United States
Cindy M. Ha
Affiliation:
fakeemail20@scholaron.com, University of North Carolina, Chapel Hill, North Carolina, United States
Roger J. Narayan
Affiliation:
roger_narayan@msn.com, University of North Carolina, Biomedical Engineering, Chapel Hill, North Carolina, 27599, United States
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Abstract

Nanoporous electrodes, such as those made from carbon or gold, can capture and release ionic analytes at concentrations near 1 mole per liter of pore volume through capacitive charging or electrochemically reversible adsorption. In vitro studies suggest that this phenomenon can be the basis for a noninvasive, precise, and programmable drug delivery method. It would eliminate the need for bulk fluid delivery to target tissue and require only a thin electrical connection, minimizing pain and tissue disruption. We have designed effective gold electrode assemblies and observed the depletion and release phenomena using electrochemical methods and charged dyes.

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Type
Research Article
Copyright
Copyright © Materials Research Society 2010

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