Effect of substrate curvature on thickness distribution of polydimethylsiloxane thin film in spin coating process Project supported by the National Natural Science Foundation of China (Grant Nos. 51605079 and 51475076), the Science Fund for Creative Research Groups of the National Natural Science Foundation of China (Grant No. 51621064), and the China Postdoctoral Science Foundation (Grant No. 2016M591424). |
(color online) Schematic diagrams for the process of spin coating on a planar substrate and curing on the concave substrate. |