Modeling Spin Coating of Newtonian and
Non-Newtonian Fluids
Katie Weigandt (Team Leader) Kysinh Nguyen (Safety & Webmaster) Jay Berndt (Operations Coordinator)
The liquid
is spread across the wafer by centripetal force in a spin coater. A silicon
wafer containing a small amount of a viscous fluid at
its center is in circular motion.
-PROJECT
OBJECTIVES-
The
purpose of the project undertaken in the second term of chemical engineering
lab is to model the thickness of different spin coated fluids using a finite
element modeling software called FEMLAB.
A mathematical model exists that relates spin time, velocity, and
viscosity of the fluid to the final height of the film for Newtonian fluid but
not for non-Newtonian and viscoelastic fluids. Developing models for non-Newtonian fluids
will allow for more precise control of film thickness when spin coating
processes are used.
In
order to consider this project completed several objectives must be
accomplished:
- A FEMLAB model that represents spin
coating of Newtonian fluids must be created.
- The FEMLAB model must be modified to be
applicable to non-Newtonian and visco-elastic fluids.
- Laboratory data should be collected and
analyzed in order to support the validity of the models.
-PUBLIC LINKS-
Written: Presentations: Miscellaneous: Gallery:
Proposal Report Proposal Presentation (Jay) Group Schedule A Day in the Lab
Final Technical
Report Midterm
Presentation (Kysinh) MS Project Plan A Day in the Woods
1st Weekly Memo (04-15-05) Final Presentation (Katie) FEMLAB Just the Three of Us!
2nd Weekly Memo (04-22-05) Engineering Fair
Poster Surface Tension Modeling
6th Weekly
Memo (05-27-05)
Potential Problem
Analysis
-FEMLAB MODELS-
The following documents were obtained from www.comsol.com. They describe the necessary conditions needed to build specific models in FEMLAB. These models were used for training purposes. The Simulation links must be saved first and then opened in FEMLAB.
ALE Model Rotating Disk Flow Over Back Step Copper Deposition 3-D
Blood Vessel Model
*Derivation *Derivation *Derivation *Derivation *Derivation
*Video
*Power Point *Power Point *Power
Point
-PRIVATE LINKS-