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Publication Citation: Electrical Manipulation of Gold Nanoparticles for Microfluidic Applications

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Author(s): Darwin R. Reyes-Hernandez; Geraldine I. Mijares; Kimberly A. Briggman; Jon C. Geist; Michael Gaitan;
Title: Electrical Manipulation of Gold Nanoparticles for Microfluidic Applications
Published: October 16, 2008
Abstract: An electrical method to trap and release gold nanoparticles to and from the surface of alkanethiol-modified gold electrodes is presented. When a positive bias versus a Ag/AgCl reference electrode was applied to gold electrodes, negatively-charged gold nanoparticles (GNPs) were attracted towards and attached to the surface more rapidly than without bias. Partial release was provided by negative bias, and varied depending on the alkanethiol used to modify the gold electrode. This work describes the accelerated concentration of GNPs on the surface of the electrodes, their entrapment, and final release for applications such as nanotoxicity studies.
Conference: The Twelfth International Conference on Miniaturized Systems for Chemistry and Life Sciences (µTAS 2008)
Proceedings: The Proceedings of MicroTAS 2008 Conference
Pages: pp. 233 - 235
Location: San Diego, CA
Dates: October 12-16, 2008
Keywords: Gold nanoparticles, Impedance, Self-assembled monolayers, Electrical manipulation
Research Areas: Nanotechnology, Nanoelectronics and Nanoscale Electronics
PDF version: PDF Document Click here to retrieve PDF version of paper (372KB)