supported by the National Natural Science Foundation of China(No.11201308);the Natural Science Foundation of Shanghai(No.14ZR1440800);the Innovation Program of the Shanghai Municipal Education Commission(No.14ZZ161)
The pull-in instability of a cantilever nano-actuator model incorporating the effects of the surface, the fringing field, and the Casimir attraction force is investigated. A new quartic polynomial is proposed as the s...