Theoretical Exploration of Barrel-Shaped Drops on Cactus Spines

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• 作者：Cheng Luo
• 刊名：Langmuir
• 出版年：2015
• 出版时间：November 3, 2015
• 年：2015
• 卷：31
• 期：43
• 页码：11809-11813
• 全文大小：219K
• ISSN：1520-5827

文摘

To survive an arid environment, desert cacti are capable of harvesting water from fog by transporting condensed water drops using their spines. Cactus spines have a conical shape. In this work, on the basis of the difference of liquid pressure, a new theoretical model has been developed for a barrel-shaped liquid drop on a conical wire. This model is further simplified to interpret the effects of contact angles, conical angle, surface microgrooves, and gravity on the drop movement along a cactus spine.