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 an 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.
No takes yet. Share an insight, caveat, or question.
Wang et al. (2014) studied this question.
Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context: