An electrochemical dopamine sensor with CMOS detection circuit

Feng Lin Zhan*, Li Min Kuo, Shi Wei Wang, Michael S.C. Lu, Wen Ying Chang, Chih Heng Lin, Yuh-Shyong Yang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Scopus citations

Abstract

This paper presents the use of interdigitated microelectrodes as the platform for electrochemical sensing of the neurotransmitter dopamine. Gold electrodes with gaps ranging between 3 (im to 7 μm are fabricated by the lift-off technique. The reduction and oxidation potentials for dopamine are determined by voltammetry using the fabricated microelectrodes. A CMOS sensing circuit is used to amplify the electrochemical current produced by the working electrodes. Experimental result shows that for a dopamine concentration of 10 μM, the measured current value is 11 pA.

Original languageEnglish
Title of host publicationThe 6th IEEE Conference on SENSORS, IEEE SENSORS 2007
Pages1448-1451
Number of pages4
DOIs
StatePublished - 1 Dec 2007
Event6th IEEE Conference on SENSORS, IEEE SENSORS 2007 - Atlanta, GA, United States
Duration: 28 Oct 200731 Oct 2007

Publication series

NameProceedings of IEEE Sensors

Conference

Conference6th IEEE Conference on SENSORS, IEEE SENSORS 2007
CountryUnited States
CityAtlanta, GA
Period28/10/0731/10/07

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