| 초록 |
Elasto-capillarity is the ability of capillary forces to deform an elastic structure. Downscaling of the solid structures including rigid materials is the most promising approach for decreasing the flexural rigidity. The phenomenon is found at all length scales and is central to natural phenomena, e.g., the spider’s capture thread. The in- and ex-flow of a spider’s capture thread inside a wetting glue droplet is originated from both the downscaling and interface engineering, which can produce the higher capillary force rather than the bending resistance of the straight fiber inside the liquid phase. During compression, the capture thread is spontaneously spooled inside the droplet, keeping the external fiber taut. In contrast, the in-drop fiber segment is released under strain/stress conditions. Here, various bio-inspired things with stretchable and self-recoverable micro-Yoyo and Slinky characteristics will be introduced and their operating principle/applications will be discussed. |
