Morphology and mechanics of the adhesive disc of liana Parthenocissus tricuspidata
He T; Zhang L; Xin H; Deng W
Pure and Applied Chemistry
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 branch- let and tendril which is 260 times greater than its own weight during the growth and can sus- tain 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-adhe- sive properties. Microscopic experiments show some new microstructures and we propose a new hypothesis and model to elucidate the mechanism of adhesion.