An electrochemical dopamine sensor with CMOS detection circuit

作者：Zhan Feng Lin^*; Kuo Li Min; Wang Shi Wei; Lu Michael S C; Chang Wen Ying; Lin Chih Heng; Yang Yuh Shyong

来源：6th IEEE Sensors Conference, 2007-10-28 to 2007-10-31.

DOI：10.1109/ICSENS.2007.4388686

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 gm to 7 gm 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 mu M the measured current value is 11 pA.

• 出版日期2007
• 单位中国科学院电工研究所; 清华大学