title: A Glucose Biosensor Using CMOS Potentiostat and Vertically Aligned Carbon Nanofibers.
abstract: 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.
authors.forename: Khandaker A
authors.initials: KA
authors.lastname: Al Mamun
authors.forename: Syed K
authors.initials: SK
authors.lastname: Islam
authors.forename: Dale K
authors.initials: DK
authors.lastname: Hensley
authors.forename: Nicole
authors.initials: N
authors.lastname: McFarlane
mesh_terms: D015374:Biosensing Techniques / Q000295:instrumentation / Q000379:methods*; D002244:Carbon / Q000737:chemistry*; D055664:Electrochemical Techniques; D004566:Electrodes; D005947:Glucose / Q000032:analysis*; D057139:Nanofibers / Q000737:chemistry*
chemical_list: D002244:Carbon; D005947:Glucose