31-05-2012, 11:10 AM
The Anti-Gravity MicroMachine
The Anti-Gravity MicroMachine.ppt (Size: 440.5 KB / Downloads: 83)
What are Micromirrors?
Change the angle of a reflected beam in multiplexing and de-multiplexing of optical signals
Very precise and flawless
Aim: raise the mirror to the desired angle.
The Problem
Vertical lift cannot be obtained through horizontal movement
Fabrication process leads the mirror to sag down.
Vertical Thermal Actuators
Design 1: Built to provide a downward motion but is overdriven; when current is removed the actuator snaps up
Possible Issues
Torsion hinge might break or not be flexible enough
Actuating arms might bend
Vertical thermal actuators might not give enough deflection