アメンボ幼虫に特有な微細表面構造の撥水モデル

抄録

Larvae of water striders (Aquarius paludum paludum) has microtrichia and nanoscale tack shape structures. The form of tack shape structures is halfsphere (diameter: 250 nm, height: 125 nm). We hypothesized that the tack shape structures could prevent immersion their body from water surface by Cassie-Baxter’s condition when they locomote on water surface. The tack shape structures can remove microdroplets which enter between micro-hairs. In order to explain the water-repellency function of the tack shape structures, we proposed a water-repellency model. The model showed that the water-repellency function was sufficient to prevent touching of the water surface on the surface of water strider’s leg.