A Printed Organic Amplification System for Wearable Potentiometric Electrochemical Sensors

被引：63

作者：

Shiwaku, Rei ^{[1
]}

Matsui, Hiroyuki ^{[1
]}

Nagamine, Kuniaki ^{[1
]}

Uematsu, Mayu ^{[1
]}

Mano, Taisei ^{[1
]}

Maruyama, Yuki ^{[1
]}

Nomura, Ayako ^{[1
]}

Tsuchiya, Kazuhiko ^{[1
]}

Hayasaka, Kazuma ^{[1
]}

Takeda, Yasunori ^{[1
]}

Fukuda, Takashi ^{[2
]}

Kumaki, Daisuke ^{[1
]}

Tokito, Shizuo ^{[1
]}

机构：

[1] Yamagata Univ, Res Ctr Organ Elect ROEL, 4-3-16 Jonan, Yonezawa, Yamagata 9928510, Japan

[2] Tosoh Corp, Funct Polymers Res Lab, 1-8 Kasumi, Yokaichi, Mie 5108540, Japan

来源：

SCIENTIFIC REPORTS | 2018年 / 8卷

基金：

日本科学技术振兴机构; 日本学术振兴会;

关键词：

FIELD-EFFECT TRANSISTOR; HIGH-PERFORMANCE; ARRAYS;

D O I：

10.1038/s41598-018-22265-1

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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.

引用

页数：8

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