Excellent mechanical durability of superhydrophobic surface based on fiber array for biological applications

A new superhydrophobic surface with fiber array structure is designed and prepared by electrostatic flocking method to improve its mechanical stability. The superhydrophobic surface does not only display good water repellency with a large water contact angle of 156.0 degrees, but also exhibits excellent mechanical stability (a water contact angle of 159.5 degrees after 200 abrasion cycles). Furthermore, the blood repellency, antibacterial, anti-fouling and anti-corrosion performance of superhydrophobic surface are evaluated in detail. It is observed that the blood droplet can roll off surface within 0.3 s while it also exhibits good antibacterial, anti-fouling and anti-corrosion performance. The good comprehensive performance is attributed to fiber array structure with low surface energy and closely adhesion on substrate under assistant of polymer adhesive. This work thus provides a new method to prepare high-performance superhydrophobic surface for various applications.