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Conference proceedings

Proc. Eurosensors XXV, Athènes : Grèce (2011)

Photopotential Imaging on Functionalized Surfaces Dedicated to Label-Free Detection of Biomolecular Interactions

A. Charrier1, Y. Chevolot1, .J.-P. Cloarec1, A. Goudot1, T. Géhin1, C. Roux1, V. Dugas2, S. Vidal3, J.-J. Vasseur4, F. Morvan4, E. Souteyrand1

We present a label-free biosensor capable to map local potential by photogenerating charge carriers in a field effect device. It consists in an amplitude-modulated laser beam scanning through an electrolyte/insulator/semiconductor structure at very low illumination around the equilibrium state of semiconductor. A proof of principle is demonstrated by depositing a self-assembled monolayer on the dielectric and by showing a clear photopotential change between naked and covered areas.

1:	INL - Institut des nanotechnologies de Lyon - Site d'Ecully
2:	Laboratoire des Sciences Analytiques
3:	ICBMS - Institut de Chimie et Biochimie Moléculaires et Supramoléculaires
4:	IBMM - Institut des Biomolécules Max Mousseron

Keyword(s) : * Label-free biosensor – * photopotential imaging – * photogeneration – * field effect – * electrochemical impedance

hal-00668683, version 1

http://hal.archives-ouvertes.fr/hal-00668683

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From: Brigitte Carles <>

Submitted on: Friday, 10 February 2012 10:50:21

Updated on: Friday, 10 February 2012 10:50:21