Magnetic-fluid microelectromechanical light modulator

SEO Jong-wook; WANG Xi-jun

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Magnetic-fluid microelectromechanical light modulator

更新时间：2020-08-12

- Magnetic-fluid microelectromechanical light modulator
- Optics and Precision Engineering Vol. 13, Issue 5, Pages: 542-547(2005)
- 作者机构：
  
  1. Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences Changchun,China,130033
  2. School of Electronic and Electrical Engineering, Hongik University, 72-1, Sangsu-dong,Mapo-,, Rep.,Seoul gu,Korea,121-791
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：16 March 2005，
  
  Revised：27 June 2005，
  
  Published Online：30 October 2005，
  
  Published：30 October 2005
- 稿件说明：
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SEO Jong-wook, WANG Xi-jun. Magnetic-fluid microelectromechanical light modulator[J]. Optics and precision engineering, 2005, 13(5): 542-547.
DOI：

SEO Jong-wook, WANG Xi-jun. Magnetic-fluid microelectromechanical light modulator[J]. Optics and precision engineering, 2005, 13(5): 542-547. DOI：

摘要

A new microfluidic microelectromechanical light modulator using a magnetic fluid is introduced. The optical reflection from the device is modulated by applying an electric current into an electrode

which is enclosed by ferromagnetic thin films as in an inductive head for a magnetic data storage device. The magnetic field produced by the current exerts a magnetic force on the magnetic fluid and drives the fluid to cover the cell surface. The surface tension of the fluid provides a restoring force when the field is reduced. The actuation of the fluid is completed in about 12 ms for both thin-to-thick and thick-to-thin fluid film switchings by magnetic forces and surface tension forces

respectively. It was observed that the switching speed was almost independent of the driving current

and no considerable thermal effect were observed when driven by a current up to 100 mA.

Abstract

A new microfluidic microelectromechanical light modulator using a magnetic fluid is introduced. The optical reflection from the device is modulated by applying an electric current into an electrode

respectively. It was observed that the switching speed was almost independent of the driving current

and no considerable thermal effect were observed when driven by a current up to 100 mA.

关键词

Keywords

references

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