Triple-Junction Effect and Its Electric Field Relaxation in Three Dielectrics

摘要

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