壁虎刚毛, 微制造, 二级结构, 激光直写 

Inspired by gecko attachment system,a new method was proposed to fabricate hierarchical bio-mimetic gecko hair arrays by adopting laser direct writing.The fabrication process was controlled on computer. Single-layer pillars of different radial dimensions and axial dimension were fabricated. Based on the laser direct writing,three fabricating schemes of hierarchical structure were developed.Among them,'top-down method' made the second level structure buried in the structure of the first level by the regulation and control of the exposure time and development time, which effectively improve the connection strength between two arrays. Relationships of exposure depth and exposure time, development depth and development time were also established. This method of

fabricating bio-mimetic gecko hair arrays has advantages of low cost and quantity production. 