Fabrication and adhesion of biomimetic nanotextures fabricated by local oxidation nanolithography

Functional surfaces with biomimetic nanotexture have aroused much interest because of their great advantages in applications. The nanometer-sized biomimetic textures are fabricated using current induced local anodic oxide (LAO) method. By controlling pulsed bias voltage, pulsewidth and relative humidity, the dimensions of biomimetic textures can be precisely controlled. In our study, an atomic force microscopy (AFM) is used for both fabrication and characterization. Conductive AFM allows fabrication process of biomimetic nanotexture without the need to change masks or repeat entire fabrication process. Furthermore, the adhesive characterization of the biomimetic nanotexture was investigated by a colloidal probe. Schematic of local anodic-oxidation process induced by a biased conductive AFM tip.