Abstract
This paper analyses the electric field distribution near a wedge-like edge in arrangements consisting of three dielectrics by analytical and numerical methods. The electric potential behaves exponentially as rn (r is distance from the edge) near the edge, leading to an infinitely high field with decreasing r for any cases. The value of analytically derived exponent n agreed well with that obtained from the numerical field calculation. It has been also demonstrated that rounded contact of the spacer with zero contact angle can make the electric field constant without showing an exponential rise near the edge.
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