Patterned Superhydrophobic Surfaces: Toward a Synthetic Mimic of the Namib Desert Beetle
By Sung Hoon Kang
Title: Patterned Superhydrophobic Surfaces: Toward a Synthetic Mimic of the Namib Desert Beetle
Reference: L. Zhai, M. C. Berg, F. C. Cebeci, Y. Kim, J. M. Milwid, M. F. Rubner, and R. E. Cohen, Nano Lett. 6, 1213-1217 (2006).
Soft matter keywords
superhydrophobic surface, hydrophilic pattern, contact angle, Namib desert beetle
Abstract from the original paper
The present study demonstrates a surface structure that mimics the water harvesting wing surface of the Namib Desert beetle. Hydrophilic patterns on superhydrophobic surfaces were created with water/2-propanol solutions of a polyelectrolyte to produce surfaces with extreme hydrophobic contrast. Selective deposition of multilayer films onto the hydrophilic patterns introduces different properties to the area including superhydrophilicity. Potential applications of such surfaces include water harvesting surfaces, controlled drug release coatings, open-air microchannel devices, and lab-on-chip devices.
Soft matter example