Experimental results characterizing a VLSI multi-channel potentiostat sensor system designed for sensing distributed neurotransmitter activity are presented. Neurotransmitter concentration is electrochemically transduced using an external carbon fiber electrode. Resultant current is processed by an integrated potentiostat, consisting of a current amplification stage, current-mode delta-sigma A/...

The paper describes new approach of potentiostat for very low sensor current measurements. Recent potentiostats were used as measurement devices which were standalone and sensors were connected by a screened wire. These concepts are inconvenient for the presented very low current measurements. The new approach is based on the potentiostat circuitry integrated on a chip that should be directly c...

Ahatcaet Factors involved in construction and utilization of an inexpensive, rapid-response potentiostat with 50 mA current capabilities are discussed. The potentiostat can be used with ancillary units, eg function generators, for a variety of rapid perturbation approaches, eg cyclic voltammetry at scan rates to 4000 V/s or greater, potential-step chronoamperometry with data acquisition after 4...

This paper presents an individually addressable 32x32 microelectrode array (MEA) system with built-in CMOS potentiostat for analyzing single droplets and ultra-small volume samples. The proposed system has advantages of smaller sample requirement, higher density, small form factor, low power and higher sensitivity and advanced functionality over the conventional electrode array. Each electrode ...

Abdmc-A software package for interfacing an IBM P!3/2 and the EG&G PAR model 273 potentiostat/galvanostat is described. The software is capable of controlling the instrument and taking and displaying both potential and current data simultaneously as a function of time (chromatovokammetry). The software is written in both Microsoft QuickBASIC and QuickC for fast operatiou and easy portability. T...

To move electrochemical sensing technology from the laboratory into point-of-care (POC)-based settings, platforms must be cost-effective, portable, and user-friendly. Here, we present comparison of a near-field communication (NFC) potentiostat with traditional potentiostat. The NFC is roughly size credit card wirelessly powered by smartphone user-friendly application for analysis.