Underwater Adhesion Mechanisms and Biomimetic Study of Marine Life

Bioadhesion is usually a special function or viability acquired by organisms during long-term evolution process. However, it is difficult for the biomimetic underwater adhesion materials and structures to fully reproduce the adaptive ability of biological materials in the field of engineering materials. Based on the rich ways of adhesion in nature, the adhesion mechanisms of several typical marine organisms (mussels, barnacles, sand worms, octopuses, catfish, abalone, sea urchins) are introduced in detail, and the corresponding design of the bionic devices (such as Dopa modified hydrogel, suction cup stickers, sea urchin robots, etc) and their application prospects are investigated. Finally, the current marine biological adhesion mechanism and related bionic research are summarized, and the existing problems are proposed. It is pointed out the necessity of in-depth study on the dynamic process and regulation mechanisms of "adhesion-desorption" of typical marine adherents. In addition, the future development directions of bionic researches including reversible, controllable and environmental protection are expounded.