Hello. I am trying to do contact-separation mode TENG. I have been following , and I am suffering to calculate the Open circuit voltage (Voc). I made geometry and set the materials setting all same with the paper, and I set floating potential on the top of top electrode and bottom of bottom electrode, respectively (I followed a youtube channel for TENG) And I set surface charge density 22 C/m2 in the Nylon surface and -22 C/m2 in the PDMS surface. Then I made default mesh. And then I did parametric sweep (the separation distance between dielectric materials), and calculated line average potential of top electrode and bottom electrode, but they both came out so big (ex: -5.01E9 V). And the output voltage (in the image) is too big, compared to the reference paper. I attached the COMSOL file. Could you please tell me what I am doing wrong? I would really appreciate it. Thank you so much for reading the whole text.