A bio-inspired reference electrode: Regulating the respiration of micro-organisms

Hao Ren; Cesar I. Torres; Junseok Chae

doi:10.31438/trf.hh2016.79

A bio-inspired reference electrode: Regulating the respiration of micro-organisms

Hao Ren, Cesar I. Torres, Junseok Chae

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Inspired by the possibility of controlling the respiration of micro-organisms, we present a bio-inspired reference electrode, demonstrating a stable potential for extended period of time. The bio-inspired reference electrode, made of platinum, sits in a microfluidic chamber for growing specific micro-organisms, Geobacter sulfurreducens, which is an exoelectrogen capable of transferring electrons outside its outer membrane to complete its respiration process. Open circuiting the reference electrode forces exoelectrogens on the electrode unable to transfer electrons to the electrode to complete the respiration process. This will set the reference potential to be the open circuit potential of the anolyte, sodium acetate, which is ~ -0.5 V versus the Ag/AgCl in 3M NaCl. The bio-inspired reference electrode maintained its potential stability of ±1.07 mV/day for over a week. The bio-inspired reference electrode was integrated in a MEMS microbial fuel cell (MFC) to characterize its electrochemical characteristics, including polarization, voltammetry, and electrochemical impedance spectroscopy.

Original language	English (US)
Title of host publication	2016 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2016
Editors	Mark G. Allen, Tina Lamers
Publisher	Transducer Research Foundation
Pages	290-293
Number of pages	4
ISBN (Electronic)	9781940470023
DOIs	https://doi.org/10.31438/trf.hh2016.79
State	Published - 2016
Event	2016 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2016 - Hilton Head, United States Duration: Jun 5 2016 → Jun 9 2016

Publication series

Name	2016 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2016

Conference

Conference	2016 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2016
Country/Territory	United States
City	Hilton Head
Period	6/5/16 → 6/9/16

ASJC Scopus subject areas

Hardware and Architecture
Electrical and Electronic Engineering

Access to Document

10.31438/trf.hh2016.79

Cite this

Ren, H., Torres, C. I., & Chae, J. (2016). A bio-inspired reference electrode: Regulating the respiration of micro-organisms. In M. G. Allen, & T. Lamers (Eds.), 2016 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2016 (pp. 290-293). (2016 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2016). Transducer Research Foundation. https://doi.org/10.31438/trf.hh2016.79

A bio-inspired reference electrode: Regulating the respiration of micro-organisms. / Ren, Hao; Torres, Cesar I.; Chae, Junseok.
2016 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2016. ed. / Mark G. Allen; Tina Lamers. Transducer Research Foundation, 2016. p. 290-293 (2016 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2016).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Ren, H, Torres, CI & Chae, J 2016, A bio-inspired reference electrode: Regulating the respiration of micro-organisms. in MG Allen & T Lamers (eds), 2016 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2016. 2016 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2016, Transducer Research Foundation, pp. 290-293, 2016 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2016, Hilton Head, United States, 6/5/16. https://doi.org/10.31438/trf.hh2016.79

Ren H, Torres CI, Chae J. A bio-inspired reference electrode: Regulating the respiration of micro-organisms. In Allen MG, Lamers T, editors, 2016 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2016. Transducer Research Foundation. 2016. p. 290-293. (2016 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2016). doi: 10.31438/trf.hh2016.79

Ren, Hao ; Torres, Cesar I. ; Chae, Junseok. / A bio-inspired reference electrode : Regulating the respiration of micro-organisms. 2016 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2016. editor / Mark G. Allen ; Tina Lamers. Transducer Research Foundation, 2016. pp. 290-293 (2016 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2016).

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abstract = "Inspired by the possibility of controlling the respiration of micro-organisms, we present a bio-inspired reference electrode, demonstrating a stable potential for extended period of time. The bio-inspired reference electrode, made of platinum, sits in a microfluidic chamber for growing specific micro-organisms, Geobacter sulfurreducens, which is an exoelectrogen capable of transferring electrons outside its outer membrane to complete its respiration process. Open circuiting the reference electrode forces exoelectrogens on the electrode unable to transfer electrons to the electrode to complete the respiration process. This will set the reference potential to be the open circuit potential of the anolyte, sodium acetate, which is ~ -0.5 V versus the Ag/AgCl in 3M NaCl. The bio-inspired reference electrode maintained its potential stability of ±1.07 mV/day for over a week. The bio-inspired reference electrode was integrated in a MEMS microbial fuel cell (MFC) to characterize its electrochemical characteristics, including polarization, voltammetry, and electrochemical impedance spectroscopy.",

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AB - Inspired by the possibility of controlling the respiration of micro-organisms, we present a bio-inspired reference electrode, demonstrating a stable potential for extended period of time. The bio-inspired reference electrode, made of platinum, sits in a microfluidic chamber for growing specific micro-organisms, Geobacter sulfurreducens, which is an exoelectrogen capable of transferring electrons outside its outer membrane to complete its respiration process. Open circuiting the reference electrode forces exoelectrogens on the electrode unable to transfer electrons to the electrode to complete the respiration process. This will set the reference potential to be the open circuit potential of the anolyte, sodium acetate, which is ~ -0.5 V versus the Ag/AgCl in 3M NaCl. The bio-inspired reference electrode maintained its potential stability of ±1.07 mV/day for over a week. The bio-inspired reference electrode was integrated in a MEMS microbial fuel cell (MFC) to characterize its electrochemical characteristics, including polarization, voltammetry, and electrochemical impedance spectroscopy.

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A bio-inspired reference electrode: Regulating the respiration of micro-organisms

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