2018/01/08 by José Danglad‐Flores, Stephan Eickelmann, Hans Riegler · 1 citation
Engineering · #Fluid Dynamics and Thin Films #Nanofabrication and Lithography Techniques #Nanomaterials and Printing Technologies
paper · pdf · doi:10.1016/j.ces.2018.01.012
openalex publication_date 2018/01/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/03
Spin casting of mixtures of nonvolatile polymeric solutes dissolved in volatile solvents is studied experimentally and theoretically. The final solute coverage, time-resolved film thinning, time-resolved solvent evaporation, and evolution of the solute concentration within the thinning film is investigated for various combinations of different polymers (PMMA, PS, PS-b-PMMA) and different solvents (toluene, ethyl-acetate) for a wide range of polymer concentrations and spin cast conditions. The comprehensive data unveil a clear picture of the spin cast process. The findings are translated into a concise theoretical description. Easily available bulk properties of the solvent/solute mixture plus a single “calibration” experiment are sufficient for a quantitative description of the spin cast process including a prediction of the final solute coverage. This and the well-specified boundary conditions render the approach useful for practical applications.