화학공학소재연구정보센터
Advanced Materials, Vol.26, No.28, 4889-4889, 2014
Chinese Brushes: Controllable Liquid Transfer in Ratchet Conical Hairs
The controllable liquid transfer of a Chinese brush is attributable to the unique anisotropic multi-scale structures of the freshly emergent hairs. A large mass of liquid can be dynamically balanced within the brush as a cooperative effect of the Laplace pressure difference, the asymmetrical retention force, and gravity. Inspired by this, a device is developed with parallel hairs that allows for direct writing of micro-lines.