期刊
BIOINSPIRATION & BIOMIMETICS
卷 11, 期 3, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1748-3190/11/3/035003
关键词
adhesion; friction; tree frog; Litoria caerulea; atomic force microscopy
资金
- priority program of the German Science Foundation [SPP1420]
Tree frogs have become an object of interest in biomimetics due to their ability to cling to wet and slippery surfaces. In this study, we have investigated the adhesion and friction behavior of toe pads of White's tree frog (Litoria caerulea) using atomic force microscopy (AFM) in an aqueous medium. Facilitating special types of AFM probes with radii of similar to 400 nm and similar to 13 mu m, we were able to sense the frictional response without damaging the delicate nanopillar structures of the epithelial cells. While we observed no significant adhesion between both types of probes and toe pads in wet conditions, frictional forces under such conditions were very pronounced and friction coefficients amounted between 0.3 and 1.1 for the sliding friction between probes and the epithelial cell surfaces.
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