ABSTRACT

The potential function of OSITs can be described by the Poisson equation (3) and the boundary condition formulas (4) and (5).

∇ • = −∇ = − ∂ ∂

∂ ∂

= ∈E x y

2 ϕ ϕ ϕ β

ε ,( , ) Ω (3)

Γ1: ( , )ϕ ϕ x y (4)

Γ2 : ( , )∂ ∂

=

ϕ n

u y (5)

where is the potential function of the model, Γ1 is the first kind of boundary condition, it is the voltage applied to each electrode. Γ2 is the second kind of boundary condition, and it is the derivative of except the first type of boundary conditions. In addition, the whole region of the model is built satisfy the condition of electric neutrality and the total charge density is 0.