I am doing ANSYS Maxwell simulation of Taylors cone with different materials such as PTFE, PEEK and Silicon. The electrostatic fluid used is EMI-BF4 which modelled as cylinder with Cone on top of it. The fluid is filled in holes of size 200um in the PTFE sheet. When I am changing the material of the sheet, I am still getting the same value of electric field. The electrodes are modelled in with air between them. I am getting low values of electric field in order of 10^7 while I should get it around 10^9. Can anyone point out the mistake I am doing?

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