Patterned Superhydrophobic Surfaces: Toward a Synthetic Mimic of the Namib Desert Beetle

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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.

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