Values of lower and upper pull-in parameters provided by proposed theoretical approach for various values of the support stiffness k and of the ionic concentration ξ0, fixed the voltage ratio ϕ2/ϕ1 and parameters aW, aC.

Table 2: Values of lower and upper pull-in parameters provided by proposed theoretical approach for various values of the support stiffness k and of the ionic concentration ξ₀, fixed the voltage ratio ϕ₂/ϕ₁ and parameters a_W,a_C.

$ϕ_{2} / ϕ_{1} = 0 .01$		a_W = 0.5				a_C = 0.5
k	x₀	r_l	b_l	r_u	b_u	r_l	b_l	r_u	b_u
¥	1.5	0.324531	9.50766	0.33223	9.81607	0.28623	7.52071	0.2935	7.8248
50	1.5	0.325193	8.29662	0.3336	8.6393	0.28443	6.31572	0.29209	6.63583
10	1.5	0.327684	4.83103	0.33719	5.18228	0.27769	2.87252	0.28543	3.15088
5	1.5	0.330584	2.23115	0.33919	2.48706	0.27021	0.29705	0.27629	0.45083
¥	2	0.262724	30.3253	0.26878	31.4296	0.24402	25.0186	0.24991	26.1301
50	2	0.267061	26.36	0.2737	27.5956	0.24661	20.9939	0.25287	22.183
10	2	0.284199	15.1193	0.29178	16.3991	0.25641	9.52011	0.26282	10.5756
5	2	0.305134	6.86014	0.31203	7.7845	0.26753	0.98122	0.27243	1.52032