A Printed Organic Amplification System for Wearable Potentiometric Electrochemical Sensors

Overview

Journal Sci Rep

Specialty Science

Date 2018 Mar 4

PMID 29500398

Citations 5

Authors

Rei Shiwaku

Hiroyuki Matsui

Kuniaki Nagamine

Mayu Uematsu

Taisei Mano

Yuki Maruyama

Ayako Nomura

Kazuhiko Tsuchiya

Kazuma Hayasaka

Yasunori Takeda

Takashi Fukuda

Daisuke Kumaki

Shizuo Tokito

Affiliations

Soon will be listed here.

Abstract

Electrochemical sensor systems with integrated amplifier circuits play an important role in measuring physiological signals via in situ human perspiration analysis. Signal processing circuitry based on organic thin-film transistors (OTFTs) have significant potential in realizing wearable sensor devices due to their superior mechanical flexibility and biocompatibility. Here, we demonstrate a novel potentiometric electrochemical sensing system comprised of a potassium ion (K) sensor and amplifier circuits employing OTFT-based pseudo-CMOS inverters, which have a highly controllable switching voltage and closed-loop gain. The ion concentration sensitivity of the fabricated K sensor was 34 mV/dec, which was amplified to 160 mV/dec (by a factor of 4.6) with high linearity. The developed system is expected to help further the realization of ultra-thin and flexible wearable sensor devices for healthcare applications.

Citing Articles

From Printed Devices to Vertically Stacked, 3D Flexible Hybrid Systems.

Liu F, Christou A, Dahiya A, Dahiya R Adv Mater. 2025; 37(10):e2411151.

PMID: 39888128 PMC: 11899526. DOI: 10.1002/adma.202411151.

Dual-Gate Organic Thin-Film Transistor and Multiplexer Chips for the Next Generation of Flexible EG-ISFET Sensor Chips.

Rezaee A, Carrabina J Sensors (Basel). 2023; 23(14).

PMID: 37514871 PMC: 10384797. DOI: 10.3390/s23146577.

Hybrid Device Fabrication Using Roll-to-Roll Printing for Personal Environmental Monitoring.

Phung T, Gafurov A, Kim I, Kim S, Kim K, Lee T Polymers (Basel). 2023; 15(12).

PMID: 37376333 PMC: 10302229. DOI: 10.3390/polym15122687.

Flexible organic field-effect transistors-based biosensors: progress and perspectives.

Zhang X, Pu Z, Su X, Li C, Zheng H, Li D Anal Bioanal Chem. 2023; 415(9):1607-1625.

PMID: 36719440 PMC: 9888355. DOI: 10.1007/s00216-023-04553-6.

Printed Organic Transistor-based Biosensors for Non-invasive Sweat Analysis.

Nagamine K, Nomura A, Ichimura Y, Izawa R, Sasaki S, Furusawa H Anal Sci. 2020; 36(3):291-302.

PMID: 31904007 DOI: 10.2116/analsci.19R007.

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