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electric potential-comsol

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Old   June 21, 2018, 15:19
Default electric potential-comsol
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tunisia
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Can anyone know please know how can i impose the electrode surface potential to vary lineary and periodically with time as:
E(t)= phimin+v*t for 0<=t<t0
phimax-v*(t-t0) for t0<=t<2*t0
with t0=(phimax-phimin)/v
v=scan rate in V/s
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