A potentiostat based on a voltage-controlled current source for use with amperometric gas sensors

Fidler, J.C.; Penrose, W.R.; Bobis, J.P.

doi:10.1109/19.137366

Cited by 29 publications

(18 citation statements)

References 3 publications

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“…The amperometric chemical sensor was replaced with Rwr, Rrc and Cs model [2,6], as shown in Fig. 2 and Fig.…”

Section: A Set-up Of Circuit Simulationmentioning

confidence: 99%

“…Recent works describe this kind of potentiostat for biomedical application, particularly glucose measurement [2][3]. Typical implementation of amperometric chemical sensors uses three electrodes [1][2][3][4][5][6]; the working electrode (WE), reference electrode (RE), and auxiliary counter electrode (CE). The standard potentiostat for amperometric chemical sensors uses three operational amplifiers (OP), as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

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A Wide Current Range Readout Circuit with Potentiostat for Amperometric Chemical Sensors

et al. 2009

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-This paper presents a novel readout circuit with potentiostat for amperometric chemical sensors that has wide output current range and has low power consumption, with its application towards the implantable glucose sensing system. This new design of electrochemical interface circuit operates in current-to-current transfer mode, has low input impedance characteristic and has stable loop gain unaffected by sensor resistance variation. Post layout simulations showed detection of redox current from 50 pA to 50 PA with power consumption from only 390 PW to 745 PW, while experimental verification using on-board prototype provided measurements from 10 nA to 50 PA, with 10 nA as the lowest capability of the semiconductor device analyzer used in the setup. This novel readout circuit was implemented using TSMC 0.35 Pm mixed-signal 2P4M 3.3 V CMOS technology with a chip area of 0.1767 mm 2 .

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“…The amperometric chemical sensor was replaced with Rwr, Rrc and Cs model [2,6], as shown in Fig. 2 and Fig.…”

Section: A Set-up Of Circuit Simulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Wide Current Range Readout Circuit with Potentiostat for Amperometric Chemical Sensors

et al. 2009

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“…For human subject measurements, a miniaturized potentiostat [30,31] in a wearable wristband recorded electrical currents at 0.2 Hz with a 12-bit ADC, and transmitted values to a corresponding smartphone application. The smartphone application sent data via cellular antenna to a web server, where timestamps and electrical current were logged digitally for subsequent analysis.…”

Section: Human Subject Datamentioning

confidence: 99%

Wearable Enzymatic Alcohol Biosensor

Lansdorp

Ramsay

Hamid

et al. 2019

Preprint

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Transdermal alcohol biosensors have the ability to detect the alcohol that emanates from the bloodstream and diffuses through the skin. However, they have suffered from long-term fouling of the sensor element and drift in the resulting sensor readings over time. Here, we report a disposable cartridge platform that solves the problem of sensor fouling, and an enzymatic detection pathway that minimizes baseline drift for sensitive detection. Laboratory characterization of the enzymatic alcohol sensor demonstrates a linear sensor range of between 0 and 50 mM. Further, we show continuous transdermal alcohol data recorded with a human subject over 48 hours.

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“…Fidler (Fidler et al, 1992) designed a potentiostat based on a voltage-controlled current source for the amperometric gas sensors. The circuit maintained electrochemical stability in the sensor as well as buffered the current output.…”

Section: Introductionmentioning

confidence: 99%

A portable potentiostat for the bilirubin-specific sensor prepared from molecular imprinting

Huang

Syu

Chang

et al. 2007

Biosensors and Bioelectronics

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A potentiostat based on a voltage-controlled current source for use with amperometric gas sensors

Cited by 29 publications

References 3 publications

A Wide Current Range Readout Circuit with Potentiostat for Amperometric Chemical Sensors

A Wide Current Range Readout Circuit with Potentiostat for Amperometric Chemical Sensors

Wearable Enzymatic Alcohol Biosensor

A portable potentiostat for the bilirubin-specific sensor prepared from molecular imprinting

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