Salamanders have evolved functions of attaching to a variety of surfaces under wet conditions,but racial diversity may cause a difference in attachment behaviors and epidermal characteristics.The sticking and climbing abilities of the Chinese Fire Belly Newt(CFBN),Chinese Warts Triton(CWT),Spotless Stout Newt(SSN),and Chinese Giant Salamander(CGS)on various surfaces were investigated and compared in terms of epidermal morphology,body size,and wettability.The results indicate that the spotless stout newt has an excellent ability for wet attachment,compared to other salamanders under a cer-tain contact case,resulting from its lower mass/body surface area and more visible epidermal structures.Supplementation with moderate water is beneficial for salamander attachment,and the surface roughness in the flood case also promotes the wet attachment.The CFBN has the most hydrophilic epidermis among the samples,where the water droplet quickly spreads over,presenting a completely wetting case.This study offers a comprehensive understanding of the wet attachments and the epidermal characteristics of salamanders,which is meaningful for the application of bioinspired adhesives.

Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials,Ministry of Education,Anhui University of Technology,Ma'anshan 243002,China;Anhui Province Key Laboratory of Special and Heavy Load Robot,Anhui University of Technology,Ma'anshan 243032,China;School of Mechanical Engineering,Anhui University of Technology,Ma'anshan 243032,China;College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China

[1]Meng Li;Qing Jiao;Liping Shi;Xiaolei Wang-.Comparative Studies on Wet Attaching Abilities of Different Salamander Species)[J].仿生工程学报（英文版）,2022(01):92-102

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