Abstract
A single mature adhesive disc of Parthenocissus tricuspidata has an average mass of only about 0.0005 g, an average attached area of about 1.22 mm2, and an adhesive force of about 13.7 N. On average, the disc can support a combined weight of stem, leaf, branchlet, and tendril which is 260 times greater than its own weight during the growth, and can sustain a maximum pulling force which is 2 800 000 times higher than that produced by its own weight. Experimental studies reveal that the adhesive disc of P. tricuspidata has super-adhesive properties. Microscopic experiments show some new microstructures, and we propose a new hypothesis and model to elucidate the mechanism of adhesion.
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