Many biological surfaces from nature have remarkable properties, which has inspired scientists to study their mechanisms and applications. Furthermore, the understanding of biological surfaces' principles provides novel concepts and ideas for the surface texture design. For instance, the snake skin covered with polygonal-shaped textures well reduces the friction between the skin and the surroundings during rubbing locomotion . Inspired by this, polygon surface textures are often fabricated on thrust rings to enhance frictional properties . Similarly, self-cleaning materials have been invented based on the Lotus effect . Fortunately, biological surfaces in nature not only reduce resistance, but also increase resistance, like tree frogs, which can freely and repeatedly climb on vertical surfaces or overhang without an external force, under wet and dry conditions . Existing research on the surface structure of tree frogs has mainly used it to medical engineering, bioengineering and wearable flexible electronics .