AVS 63rd International Symposium & Exhibition
    MEMS and NEMS Wednesday Sessions
       Session MN-WeM

Paper MN-WeM12
Microelectrode Array of Carbon Nanotube Posts with High Aspect Ratio and Millimeter-length, and Its Electrochemical Response

Wednesday, November 9, 2016, 11:40 am, Room 102B

Session: Multiscale Phenomena & Emerging Technologies in Micro- and Nano-Systems
Presenter: Guohai Chen, Brigham Young University
Authors: G.H. Chen, Brigham Young University
R.R. Vanfleet, Brigham Young University
R.F. Davis, Brigham Young University
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Carbon nanotubes (CNTs) have been demonstrated to be capable of making excellent electrodes/microelectrodes due to the combination of high aspect ratio, nanometer-sized dimensions, good electrical conductivity, and high chemical and thermal stability. Microelectrode array of CNT posts with high aspect ratio and millimeter-length was fabricated using carbon-nanotube-templated microfabrication with a sacrificial hedge. The electrochemical response (cyclic voltammetry) to both methyl viologen and dopamine in phosphate buffered saline solution was measured on an individual CNT post microelectrode with a diameter of 25 μm and a length of 1 mm. In addition of the detection of the characteristic peaks, the CNT post microelectrodes show a fast electrochemical response, which may be enabling for in-vivo and/or in-vitro measurements.