A physics‐informed neural network (PINN), which has been recently proposed by Raissi et al. [
J Comput Phys. 2019;378:686–707], is applied to the partial differential equation (PDE) of liquid film flows. The PDE considered is the time evolution of the thickness distribution
owing to the Laplace pressure, which involves fourth‐order spatial derivative and fourth‐order nonlinear...