Temperature Sensor Using Two Thermoelectric Liquid Electrolytes in Microfluidic Channels

研究成果: Conference contribution

抜粋

A temperature sensor using two thermoelectric liquid electrolytes in microfluidic channels is proposed, and fabricated, and evaluated. Two different electrolytes, which Seebeck coefficients are positive and negative, are electrically connected via a metal electrode. The electrode was deposited on the backside of a heat stage, which means the electrical contact area of the two electrolytes are heated as the stage is heated. The sum of the thermoelectric voltage from the two electrolytes is observed changing the temperature of the heat stage. The sensitivity of the conventional metal thermocouples depends on the Seebeck coefficients of the composed materials; however, the absolute values of the solid materials are not so large (less than few-hundreds V/K or so). Some liquid electrolytes show the relatively large absolute value of the Seebeck coefficient; however, the liquid cannot keep their interface at the contact area because of the mixing and diffusing. A temperature sensor based on a liquid thermocouple is proposed, and the proto-type is fabricated. Moreover, the performances of the thermoelectric voltage response and temperature resolution are evaluated. As a result, the thermoelectric voltage of 10.6 mV/K and the resolution of 12.8 mK are obtained. The thermoelectric voltage is reasonable considering the Seebeck coefficient of the used electrolytes.

元の言語English
ホスト出版物のタイトル2019 20th International Conference on Solid-State Sensors, Actuators and Microsystems and Eurosensors XXXIII, TRANSDUCERS 2019 and EUROSENSORS XXXIII
出版者Institute of Electrical and Electronics Engineers Inc.
ページ2166-2169
ページ数4
ISBN(電子版)9781728120072
DOI
出版物ステータスPublished - 2019 6
イベント20th International Conference on Solid-State Sensors, Actuators and Microsystems and Eurosensors XXXIII, TRANSDUCERS 2019 and EUROSENSORS XXXIII - Berlin, Germany
継続期間: 2019 6 232019 6 27

出版物シリーズ

名前2019 20th International Conference on Solid-State Sensors, Actuators and Microsystems and Eurosensors XXXIII, TRANSDUCERS 2019 and EUROSENSORS XXXIII

Conference

Conference20th International Conference on Solid-State Sensors, Actuators and Microsystems and Eurosensors XXXIII, TRANSDUCERS 2019 and EUROSENSORS XXXIII
Germany
Berlin
期間19/6/2319/6/27

ASJC Scopus subject areas

  • Process Chemistry and Technology
  • Spectroscopy
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Electronic, Optical and Magnetic Materials
  • Control and Optimization
  • Instrumentation

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  • これを引用

    Inomata, N., Van Toan, N., & Ono, T. (2019). Temperature Sensor Using Two Thermoelectric Liquid Electrolytes in Microfluidic Channels. : 2019 20th International Conference on Solid-State Sensors, Actuators and Microsystems and Eurosensors XXXIII, TRANSDUCERS 2019 and EUROSENSORS XXXIII (pp. 2166-2169). [8808737] (2019 20th International Conference on Solid-State Sensors, Actuators and Microsystems and Eurosensors XXXIII, TRANSDUCERS 2019 and EUROSENSORS XXXIII). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/TRANSDUCERS.2019.8808737