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

doi:10.1016/j.snb.2017.02.165

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

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	993-997
Number of pages	5
Journal	Sensors and Actuators, B: Chemical
Volume	248
DOIs	https://doi.org/10.1016/j.snb.2017.02.165
Publication status	Published - 2017 Jan 1

Keywords

Droplet
Electroosmotic micropump
Light-addressable potentiometric sensor
Microfluidics

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Instrumentation
Condensed Matter Physics
Surfaces, Coatings and Films
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

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A bubble-assisted electroosmotic micropump for a delivery of a droplet in a microfluidic channel combined with a light-addressable potentiometric sensor. / Li, Xueliang; Liu, Shibin; Fan, Pingping; Werner, Carl Frederik ; Miyamoto, Ko ichiro ; Yoshinobu, Tatsuo.

In: Sensors and Actuators, B: Chemical, Vol. 248, 01.01.2017, p. 993-997.

Research output: Contribution to journal › Article › peer-review

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