Electrochemically deposited metal nanoparticles for enhancing the performance of microfluidic MEMS in biochemical analysis
by Abdulilah Dawoud Bani-Yaseen, Toshikazo Kawaguchi, Ryszard Jankowiak
International Journal of Nanomanufacturing (IJNM), Vol. 4, No. 1/2/3/4, 2009

Abstract: The fabrication and evaluation of the analytical performance of integrated microfluidic MEMS modified with electrochemically deposited metal nanoparticles are described in this paper. The microfluidic MEMS is a hydride system that comprise two layers, poly-dimethylsiloxane (PDMS) and glass, which in turn enclose a micro channels network and a set of 15 micro electrodes, respectively. The mechanism of electrokinetic phenomenon and electrochemical detection were applied for performing injection and separation, and sensing the components of a biochemical mixture, respectively. The technique of electrochemical deposition was employed for depositing nanoparticles of gold, palladium and platinum on the surface of integrated microelectrodes. The nanoparticles-modified micro electrodes were characterised electrochemically and using scanning electron microscope (SEM). Importantly, the nanoparticles-based decoupler has significantly enhanced the analytical performance of the microfluidic MEMS, where detection limits in the low nanomolar range were recorded for the targeted analytes.

Online publication date: Mon, 07-Sep-2009

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