Microdroplet Monitoring Using Microfluid Circuit Combined Quartz Oscillator Based Capacitive Sensor

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  • Ebata Ryo
    Graduate School of Science and Technology, Niigata University
  • Sakai Ryo
    Graduate School of Science and Technology, Niigata University
  • Sohgawa Masayuki
    Graduate School of Science and Technology, Niigata University
  • Abe Takashi
    Graduate School of Science and Technology, Niigata University

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Other Title
  • 微小流体回路融合型水晶発振回路式容量センサを用いた微小液滴のモニタリング
  • ビショウ リュウタイ カイロ ユウゴウガタ スイショウ ハッシン カイロシキ ヨウリョウ センサ オ モチイタ ビショウ エキテキ ノ モニタリング

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Abstract

<p>In this paper, we developed a compact microdroplet monitoring sensor. This sensor is capacitive sensor combined a microfluidic circuit and a crystal oscillator. We succeeded in the generation and monitoring of microdroplets with this sensor. We optimized the sensing capacitor to improve the sensitivity of the sensor. With optimized the sensing capacitor, the frequency response can be increased. We measured NaCl aqueous solution concentration with the optimized sensing capacitor. From the measurement result, the high dynamic range measurement can be made by using two frequencies.</p>

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