Download - Vc Present
-
The Anti-Gravity MicroMachine
Presented by: Vertically Challenged
-
Introduction
Vertically Challenged is
Shabnam Abedi MoghaddamMichele La HayeRichard TuTerrence Yu
-
What are Micromirrors?Change the angle of a reflected beam in multiplexing and de-multiplexing of optical signalsVery precise and flawlessAim: raise the mirror to the desired angle
-
Mirror AnimationClick in window to start animation
-
The ProblemVertical lift cannot be obtained through horizontal movementFabrication process leads the mirror to sag down
-
The SolutionProvide initial lift to the mirror
-
Thermal ActuatorsMake use of differing arm thickness to provide movementProblem: using the principles described, it is difficult to obtain vertical movement
-
Vertical Thermal ActuatorsDesign 1: Built to provide a downward motion but is overdriven; when current is removed the actuator snaps up
-
More Vertical Thermal Actuators Design 2: Provides upward motion through the use of thin flexible connectors
- Thin bar on bottom-
-
Even More Vertical Thermal ActuatorsDesign 3: U-shaped designed to prevent thicker arm from conforming
-
Thermal Actuator AnimationClick in window to start animation
-
LeversDesign 4: Downward Vertical Thermal Actuator is used to create lift by pressing down on one end of a lever
-
More LeversDesign 5: Flexible connector used to transfer downward force of Vertical Thermal Actuator to a lever
-
Lever AnimationClick in window to start animation
-
Linear Stepper MotorMakes use of 2 banks of horizontal thermal actuators to provide a drive mechanism
- talk about the design that we used and the changes that we had to make (teeth configuration and having two steppers to provide movement in both directions)
-
Staple Hinge
-
Staple Hinge Issues
-
Torsion HingeThin flexible rods attached to mirror on either side
MirrorRotating BarLeverApplied ForcePrevent Bar from Bowing OutTorsion Hinge
-
Final Picture
-
Possible IssuesTorsion hinge might break or not be flexible enoughActuating arms might bendVertical thermal actuators might not give enough deflection
- tortion hinge: not flexible enough, might break- arm might flow, bend, or break if we remove the staples- the actuators just might not work (they can go down and not come up)
-
ConclusionTesting has yet to be doneWe are confident of positive results Terrence
-
Thanks ToDr. Ash ParameswaranRob JohnstoneShivalik BakshiCoffee
-
?
- Thin bar on bottom-
- talk about the design that we used and the changes that we had to make (teeth configuration and having two steppers to provide movement in both directions)
- tortion hinge: not flexible enough, might break- arm might flow, bend, or break if we remove the staples- the actuators just might not work (they can go down and not come up)