作者机构:[1]Institute of Bio-Inspired Structure and Surface Engineering, Nanjing University of Aeronautics and Astronauties, Nanjing 210016, P. R. China, [2]China International Engineering Consulting Corporation, Beijing 100048, P. R. China
相关基金:Acknowledgments This work was supported by the National High Technology Research and Development Program of China ("863" Program; Grant No. 2007ZA04Z201) and the National Natural Science Foundation of China (Grant Nos. 60910007 and 60535020). We sincerely thank J. Z. Dou for helping with microscopy preparations, H. C. Ding for helping with the video equipment, and Y. F. Lei for the grasping force measurements.