Concept of a micro finger using electro-conjugate fluid and fabrication of a large model prototype

Ryutaro Abe, Kenjiro Takemura, Kazuya Edamura, Shinichi Yokota

Research output: Contribution to journalArticle

68 Citations (Scopus)

Abstract

Electro-conjugate fluid (ECF) is a kind of functional fluid, which produces jet flow (ECF jet) when subjected to high DC voltage. It is ascertained that a strong ECF jet is generated under nonuniform electric field, for example, around a pair of a needle-electrode and a ring-electrode (a needle-ring electrode pair). This study proposes and develops a novel micro finger with two-DOF motion using ECF jet. First, we propose a concept of novel micro finger driven by ECF jet (ECF micro finger). The ECF micro finger consists of a finger tube with three chambers along its axis and an ECF jet generator with three needle-electrodes and a plate-electrode with three holes. When the ECF jet generated at the ECF jet generator is applied to the chambers of the finger tube, the pressurized chambers expand and the other chambers shrink resulting in the finger tube bending. Next, a large model of the proposed ECF micro finger, with finger tube diameter of 4.5 mm, is fabricated in order to confirm our concept. Finally, we investigate the static characteristics of the large model by experiments.

Original languageEnglish
Pages (from-to)629-637
Number of pages9
JournalSensors and Actuators, A: Physical
Volume136
Issue number2
DOIs
Publication statusPublished - 2007 May 1
Externally publishedYes

Fingerprint

fluid jets
prototypes
Fabrication
fabrication
Fluids
fluids
chambers
needles
tubes
Needles
electrodes
Electrodes
generators
static characteristics
jet flow
Bending (forming)
direct current
Electric fields
electric fields
rings

Keywords

  • Electro-conjugate fluid
  • Functional fluid
  • Micro finger
  • Soft actuator
  • Two-DOF micro actuation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Instrumentation

Cite this

Concept of a micro finger using electro-conjugate fluid and fabrication of a large model prototype. / Abe, Ryutaro; Takemura, Kenjiro; Edamura, Kazuya; Yokota, Shinichi.

In: Sensors and Actuators, A: Physical, Vol. 136, No. 2, 01.05.2007, p. 629-637.

Research output: Contribution to journalArticle

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