# Recent content by rinale84

1. ### Pressure on a liquid semisphere

Imagine to have a drop of water(semisphere volume) on a flat membrane covered by a polymer so that the liquid can't excape from this envelope. If I apply a pressure upon this sphere (imagine a plane at a constant pressure that step by step would squeeze down the central part of the semisphere...
2. ### How to get capacitance from potential FEM

I am not sure I am in this situation the plates of the capacitor are made of a polymer and inside the two plates we have water. Above the polymer there is a layer of conductive material on which we apply the potential...Besides how the charge will behave when i apply a potential difference among...
3. ### How to get capacitance from potential FEM

I think some function in matlab will be helpful... But the integration of the chrage density should be performed on the volume and not on the surface!Am i wrong?
4. ### How to get capacitance from potential FEM

Excuse my silly question I don't remember why the electric filed at the surface gives the surface charge density..thank u very much
5. ### How to get capacitance from potential FEM

Hi guys, I hope this is the correct section otherwise I apologize :).The goal is to find the capacity of a non linear capacitance composed by an upper plate which has a cup shape and the lower plate which is flat. The problem is the following: by means of a FEM simulation of the Poisson...