Long working range mercury droplet actuation

Takashiro Tsukamoto; Masayoshi Esashi; Shuji Tanaka

doi:10.1088/0960-1317/19/9/094016

Long working range mercury droplet actuation

Takashiro Tsukamoto, Masayoshi Esashi, Shuji Tanaka

ENG - Robotics

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

5 Citations (Scopus)

Abstract

This paper reports novel mercury droplet actuators with a long working range. The actuators were designed so that they can be used as thermal switches. Two types of actuation electrode were investigated: electrowetting type and electrostatic type. It was confirmed that the actuation of a mercury droplet was possible with each electrode. In addition, two types of actuator surface were investigated: flat surface and surface with micropillars. The micropillars showed considerable mobility enhancement of the droplet, but were found to be useful only with an appropriate electrode design. When the mercury droplet was actuated by 100-300 V_p-p, the observed maximum working range was about 200 νm, which is much longer than the values reported previously. Poor repeatability of droplet motion due to the charge-up of the actuator surface was revealed as a problem.

Original language	English
Article number	094016
Journal	Journal of Micromechanics and Microengineering
Volume	19
Issue number	9
DOIs	https://doi.org/10.1088/0960-1317/19/9/094016
Publication status	Published - 2009

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Mechanics of Materials
Mechanical Engineering
Electrical and Electronic Engineering

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10.1088/0960-1317/19/9/094016

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title = "Long working range mercury droplet actuation",

abstract = "This paper reports novel mercury droplet actuators with a long working range. The actuators were designed so that they can be used as thermal switches. Two types of actuation electrode were investigated: electrowetting type and electrostatic type. It was confirmed that the actuation of a mercury droplet was possible with each electrode. In addition, two types of actuator surface were investigated: flat surface and surface with micropillars. The micropillars showed considerable mobility enhancement of the droplet, but were found to be useful only with an appropriate electrode design. When the mercury droplet was actuated by 100-300 Vp-p, the observed maximum working range was about 200 νm, which is much longer than the values reported previously. Poor repeatability of droplet motion due to the charge-up of the actuator surface was revealed as a problem.",

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AU - Tanaka, Shuji

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AB - This paper reports novel mercury droplet actuators with a long working range. The actuators were designed so that they can be used as thermal switches. Two types of actuation electrode were investigated: electrowetting type and electrostatic type. It was confirmed that the actuation of a mercury droplet was possible with each electrode. In addition, two types of actuator surface were investigated: flat surface and surface with micropillars. The micropillars showed considerable mobility enhancement of the droplet, but were found to be useful only with an appropriate electrode design. When the mercury droplet was actuated by 100-300 Vp-p, the observed maximum working range was about 200 νm, which is much longer than the values reported previously. Poor repeatability of droplet motion due to the charge-up of the actuator surface was revealed as a problem.

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Long working range mercury droplet actuation

Abstract

ASJC Scopus subject areas

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