A bubble-assisted electroosmotic micropump for a delivery of a droplet in a microfluidic channel combined with a light-addressable potentiometric sensor

Xueliang Li, Shibin Liu, Pingping Fan, Carl Frederik Werner, Ko ichiro Miyamoto, Tatsuo Yoshinobu

研究成果: Article査読

9 被引用数 (Scopus)

抄録

A bubble-assisted electroosmotic (EO) micropump is proposed as a miniaturized actuating element to be integrated in a microfluidic chemical sensing system. In this device, a bubble is generated in a narrow channel to form a thin water sheet between the bubble and the wall. Due to the high surface-to-volume ratio of the water sheet, an efficient EO flow is realized at relatively low pumping voltages of 20–60 V without using a porous material. The direction and the flow rate of the EO flow depended on the polarity and the magnitude of the pumping voltage, and the highest flow rate of about ±500 pL/s was obtained at ±60 V. A bubble-assisted EO micropump was combined with a LAPS for measuring the pH value of a droplet with a volume of 1 nL.

本文言語English
ページ(範囲)993-997
ページ数5
ジャーナルSensors and Actuators, B: Chemical
248
DOI
出版ステータスPublished - 2017 1 1

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 器械工学
  • 凝縮系物理学
  • 表面、皮膜および薄膜
  • 金属および合金
  • 電子工学および電気工学
  • 材料化学

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