화학공학소재연구정보센터
Advanced Materials, Vol.18, No.5, 660-660, 2006
Electric-field-controlled surface instabilities in soft elastic films
The surfaces of soft elastic films spontaneously form patterns. Application of an electric field above a critical value (phi(cric)) to these patterns produces adhesive zones with distinct morphologies, such as pillars, large-amplitude fingers, or complete intimate contact (see Figure). These morphology changes, governed by film parameters such as stiffness and thickness, are explained by the physics of electrostatic-field-induced contact instabilities.