光学精密工程2005，Vol.13Issue(5)：542-547,6.
Magnetic-fluid microelectromechanical light modulator
Magnetic-fluid microelectromechanical light modulator
SEO Jong-wook 1WANG Xi-jun2
作者信息
- 1. School of Electronic and Electrical Engineering, Hongik University, 72-1,Shangsu-dong,Mapo-gu,Seoul 121-791,Rep.Korea
- 2. Changchun Institute of Optics, Fine Mechanics and Physics,Chinese Academy of Sciences, Changchun 130033,China
- 折叠
摘要
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, 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.关键词
MEMS/microfluidic/magnetic fluid/light modulator/display/flat-panel displayKey words
MEMS/microfluidic/magnetic fluid/light modulator/display/flat-panel display分类
数理科学引用本文复制引用
SEO Jong-wook,WANG Xi-jun..Magnetic-fluid microelectromechanical light modulator[J].光学精密工程,2005,13(5):542-547,6.
