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    Insights into adhesion of abalone: A mechanical approach

    Year: 2018

    Journal: J. Mech. Behav. Biomed. Mater., Volume 77, JAN, page 331–336

    Authors: Li, Jing; Zhang, Yun; Liu, Sai; Liu, Jianlin

    Organizations: National Natural Science Foundation of China [11672335, 11611530541]; Fundamental Research Funds for the Central Universities [16CX02005A]; Endeavour Australia Cheung Kong Research Fellowship Scholarship from the Australian government

    Keywords: Abalone; Normal adhesion strength; Shear adhesion strength; Capillary force; Van der Waals force

    Many living creatures possess extremely strong capability of adhesion, which has aroused great attention of many scientists and engineers. Based on the self-developed equipment, we measured the normal and shear adhesion strength of the abalone underwater and out of water on different contact surfaces. It is found that the adhesion force of the abalone can amount to 200 or 300 times its body weight. The effects of wettability and roughness of the surface, and the frictional coefficient of mucus on the adhesion strength have been discussed. The theoretical calculation manifests that the normal adhesion force mainly stems from the suction pressure, van der Waals force and capillary force of the pedal, and their limit values are given. These findings may provide some inspirations to engineer new-typed materials, micro-devices, adhesives and medicine.
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