4.6 Article

Modeling of Poly(methylmethacrylate) Viscous Thin Films by Spin-Coating

Journal

COATINGS
Volume 11, Issue 2, Pages -

Publisher

MDPI
DOI: 10.3390/coatings11020198

Keywords

spin-coating; PMMA; film thickness model

Funding

  1. Rhodes Pharmaceuticals L.P.
  2. U.S. Department of Homeland Security's Science and Technology Directorate

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In this study, a predictive film thickness model based on an accepted equation of state was applied to the spin-coating of sub-micron poly(methylmethacrylate) viscous thin films from toluene. The concentration effects on density and dynamic viscosity of the spin-coating solution were closely examined. Process mapping was utilized to generate a three-dimensional design space for controlling film thickness.
A predictive film thickness model based on an accepted equation of state is applied to the spin-coating of sub-micron poly(methylmethacrylate) viscous thin films from toluene. Concentration effects on density and dynamic viscosity of the spin-coating solution are closely examined. The film thickness model is calibrated with a system-specific film drying rate and was observed to scale with the square root of spin speed. Process mapping is used to generate a three-dimensional design space for the control of film thickness.

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