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Updated: Jul 19, 2026

A Microfluidic-based Electrochemical Biochip for Label-free DNA Hybridization Analysis
Published on: September 10, 2014
A fully electronic sensor for the measurement of cDNA hybridization kinetics
L Bandiera1, G Cellere, S Cagnin
1DEI, Department of Information Engineering, Padova University, Italy. leonardo.bandiera@gmail.com
Abstract:
Ion sensitive field effect transistors (ISFET) are candidates for a new generation of fully electrical DNA sensors. To this purpose, we have modified ISFET sensors by adsorbing on their Si(3)N(4) surface poly-L-lysine and single (as well as double) stranded DNA. Once coupled to an accurate model of the oppositely charged layers adsorbed on the surface, the proposed sensor allows quantitatively evaluating the adsorbed molecules densities, as well as estimating DNA hybridization kinetics.
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