A Glucose Biosensor Using CMOS Potentiostat and Vertically Aligned Carbon Nanofibers.

IEEE transactions on biomedical circuits and systems

PubMedID: 27337723

Al Mamun KA, Islam SK, Hensley DK, McFarlane N. A Glucose Biosensor Using CMOS Potentiostat and Vertically Aligned Carbon Nanofibers. IEEE Trans Biomed Circuits Syst. 2016;.
This paper reports a linear, low power, and compact CMOS based potentiostat for vertically aligned carbon nanofibers (VACNF) based amperometric glucose sensors. The CMOS based potentiostat consists of a single-ended potential control unit, a low noise common gate difference-differential pair transimpedance amplifier and a low power VCO. The potentiostat current measuring unit can detect electrochemical current ranging from 500 nA to 7 [Formula: see text] from the VACNF working electrodes with high degree of linearity. This current corresponds to a range of glucose, which depends on the fiber forest density. The potentiostat consumes 71. 7 [Formula: see text] of power from a 1. 8 V supply and occupies 0. 017 [Formula: see text] of chip area realized in a 0. 18 [Formula: see text] standard CMOS process.