> "Physics Professor Aleksei Aksimentiev and his post doctoral researcher James Wilson found that a high electric field applied to a tiny hole in a graphene membrane would compress the water molecules travelling through the pore by 3 percent."

Ahh, "3 percent" means that from a fluid dynamics point of view, the incompressibility assumption is still a good assumption valid for most macroscopic applications. :) Still very impressive to achieve that under ambient pressure with an electric field gradient.