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Evaluation of chemical reaction kinetics using a thermally active piezoresistive microcantilever array

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5 Author(s)
Choudhury, A. ; Georgia Inst. of Technol., Atlanta ; Vujanic, R. ; Hesketh, P.J. ; Thundat, T.
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This work investigates the evaluation of chemical reaction kinetics with a piezoresistive microcantilever array. By controlling the temperature of individual cantilevers in the array, the reaction constants can be measured at a single analyte concentration in one measurement. Adsorption and desorption of 6-mercaptohexanol on a gold-functionalized cantilever was studied at 21degC and 50degC. Current results show that desorption rates of mercaptohexanol depend on mass transport parameters. Activation energy of the desorption reaction in dry N2 is evaluated as DeltaE = -5.85 kJ/mol.

Published in:
Micro Electro Mechanical Systems, 2008. MEMS 2008. IEEE 21st International Conference on

Date of Conference: 13-17 Jan. 2008

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