Abstract
Inspired by the structure and function of Salvinia molesta, a biomimetic antifouling film with double-scale microstructure antennae was designed and fabricated using silicone rubber-graphene composite materials (micro-SR-GN). The micro-SR-GN can absorb air bubbles underwater to wrap the whole antenna, forming a “bubble shield” that can act as an environmentally-friendly physical antifouling barrier. Due to its hydrophobicity and double-scale microstructure, micro-SR-GN has strong bubble adsorption function and can maintain bubbles stability at a certain fluid velocity (1.5 m/s). In static and dynamic antifouling experiments, micro-SR-GN exhibited excellent antifouling performance, which could resist the adhesion of both Gram-negative bacteria, Gram-positive bacteria and marine algae. These findings suggest that a promising platform could be achieved based on the physical antifouling strategy of “bubble shield” and show broad prospects in maritime industry.
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