Colloidal microstructures, transport, and impedance properties within interfacial microelectrodes

Pradipkumar Bahukudumbi; W. Neil Everett; Ali Beskok; Michael A. Bevan; Gregory H. Huff; Dimitris Lagoudas; Zoubeida Ounaies

doi:10.1063/1.2744480

Colloidal microstructures, transport, and impedance properties within interfacial microelectrodes

Pradipkumar Bahukudumbi, W. Neil Everett, Ali Beskok, Michael A. Bevan, Gregory H. Huff, Dimitris Lagoudas, Zoubeida Ounaies

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

18 Scopus citations

Abstract

The authors report in situ measurements of the reversible, electric field mediated assembly of colloidal gold microstructures and their associated impedance properties on surfaces between planar gold film microelectrodes. Video optical microscopy is used to monitor the assembly of wires and locally concentrated configurations having variable resistances and capacitances. A scaling analysis of dominant electrokinetic transport mechanisms at different electric field amplitudes and frequencies is consistent with the observed steady-state microstructures. Impedance spectra are fit to equivalent circuits with elements directly connected to physical characteristics of the microelectronic/fluidic device components and different particle microstructures.

Original language	English (US)
Article number	224102
Journal	Applied Physics Letters
Volume	90
Issue number	22
DOIs	https://doi.org/10.1063/1.2744480
State	Published - 2007

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.2744480

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title = "Colloidal microstructures, transport, and impedance properties within interfacial microelectrodes",

abstract = "The authors report in situ measurements of the reversible, electric field mediated assembly of colloidal gold microstructures and their associated impedance properties on surfaces between planar gold film microelectrodes. Video optical microscopy is used to monitor the assembly of wires and locally concentrated configurations having variable resistances and capacitances. A scaling analysis of dominant electrokinetic transport mechanisms at different electric field amplitudes and frequencies is consistent with the observed steady-state microstructures. Impedance spectra are fit to equivalent circuits with elements directly connected to physical characteristics of the microelectronic/fluidic device components and different particle microstructures.",

author = "Pradipkumar Bahukudumbi and Everett, {W. Neil} and Ali Beskok and Bevan, {Michael A.} and Huff, {Gregory H.} and Dimitris Lagoudas and Zoubeida Ounaies",

note = "Funding Information: The authors acknowledge financial support from DARPA (W911NF-06-1-0050 and FA9550-07-C-0002).",

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AU - Bahukudumbi, Pradipkumar

AU - Everett, W. Neil

AU - Beskok, Ali

AU - Bevan, Michael A.

AU - Huff, Gregory H.

AU - Lagoudas, Dimitris

AU - Ounaies, Zoubeida

N1 - Funding Information: The authors acknowledge financial support from DARPA (W911NF-06-1-0050 and FA9550-07-C-0002).

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Y1 - 2007

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AB - The authors report in situ measurements of the reversible, electric field mediated assembly of colloidal gold microstructures and their associated impedance properties on surfaces between planar gold film microelectrodes. Video optical microscopy is used to monitor the assembly of wires and locally concentrated configurations having variable resistances and capacitances. A scaling analysis of dominant electrokinetic transport mechanisms at different electric field amplitudes and frequencies is consistent with the observed steady-state microstructures. Impedance spectra are fit to equivalent circuits with elements directly connected to physical characteristics of the microelectronic/fluidic device components and different particle microstructures.

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Colloidal microstructures, transport, and impedance properties within interfacial microelectrodes

Abstract

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