Development of a microfabricated electrochemical-cantilever hybrid platform

Publication: Research - peer-reviewJournal article – Annual report year: 2011

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The design and fabrication of a combined electrochemical-cantilever microfluidic system is described. A chip integrating cantilevers with electrodes into a microchannel is presented with the accompanying polymer flow cell. Issues such as electrical and fluid connections are addressed, electromechanical behavior in ionic solution is investigated, and two uses of the system are demonstrated. First, all cantilevers are functionalized with cysteine, to facilitate detection of Cu2+ ions, then one cantilever is electrochemically cleaned in situ to generate a reference cantilever for differential measurements. Two concentrations of Cu2+ ions are successfully measured in this way. Clean cantilevers are used to probe a solution with and without [Fe(CN)6]3−/4− redox couple present, demonstrating the combined voltammetric and deflection readout.
Original languageEnglish
JournalSensors and Actuators B: Chemical
Publication date2011
Volume157
Journal number1
Pages321-327
ISSN0925-4005
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 1
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