What is the solution casting method?

It is the simplest method used to create thin films from solution using centrifugal force. By drop small amount of polymer solution (or chemical solution) onto spinning head (mold or surface), then spin the solution (rpm for few seconds or minutes), the centrifugal force (force used for rotating around the motor) will provide enough force to spread the solution droplet into thin film layers spreading out on top of the surface (mold).