An optical / potential / voltammetric multifunctional CMOS image sensor for on-chip biomolecular / neural analytical applications
نویسندگان
چکیده
Abstract We have developed an on-chip image sensor with target applications of on-chip biomolecular and neural imaging. The sensor pixel can sense not only intensity of incident light, but also on-chip electric potential. The light shield structure on the pixel circuit was used as a sensing electrode. Once the passivation layer on the sensing electrode was removed, one can perform on-chip voltammetric measurement, which will be a powerful solution for on-chip biosensing applications. To realise the on-chip voltammetric measurement, we used a column reset line as a current path. Basic characteristics of the sensor was characterized in either optical / potential image sensor operation or optical / voltammetric image sensor operation.
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