Superhydrophobicity in perfection: the outstanding properties of the lotus leaf.
Superhydrophobicity in perfection: the outstanding properties of the lotus leaf.
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DOI：
10.3762/bjnano.2.19
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发表时间：
2011
影响因子：
3.1
通讯作者：
Barthlott W
中科院分区：
文献类型：
--
作者：
Ensikat HJ;Ditsche-Kuru P;Neinhuis C;Barthlott W
荷叶已经成为超疏水性和自清洁表面的标志，并导致了“莲花效应”的概念。虽然许多其他植物具有几乎相似的接触角的超疏水表面，但莲花显示出更好的稳定性和完美的防水性。在这里，我们比较了相关的性能，如微米和纳米结构，蜡的化学成分和机械性能的莲花与它的竞争对手。它很快就变得明显，荷叶的上表皮已经开发了一些无与伦比的优化。特殊的形状和乳头的密度是表面和水滴之间的接触面积极度减少的基础。非常小的上表皮蜡小管的异常致密层是其独特化学成分的结果。乳头和蜡小管的机械坚固性减少了损害，是防水性完美和持久的基础。优化的原因，特别是荷叶的上侧，可以从气孔位于上表皮的事实中推断出来。在这里，雨水和污染的影响高于下表皮。莲花植物已经成功地为它的叶子的这个微妙的气孔上表面开发了一个很好的保护。
Lotus leaves have become an icon for superhydrophobicity and self-cleaning surfaces, and have led to the concept of the ‘Lotus effect’. Although many other plants have superhydrophobic surfaces with almost similar contact angles, the lotus shows better stability and perfection of its water repellency. Here, we compare the relevant properties such as the micro- and nano-structure, the chemical composition of the waxes and the mechanical properties of lotus with its competitors. It soon becomes obvious that the upper epidermis of the lotus leaf has developed some unrivaled optimizations. The extraordinary shape and the density of the papillae are the basis for the extremely reduced contact area between surface and water drops. The exceptional dense layer of very small epicuticular wax tubules is a result of their unique chemical composition. The mechanical robustness of the papillae and the wax tubules reduce damage and are the basis for the perfection and durability of the water repellency. A reason for the optimization, particularly of the upper side of the lotus leaf, can be deduced from the fact that the stomata are located in the upper epidermis. Here, the impact of rain and contamination is higher than on the lower epidermis. The lotus plant has successfully developed an excellent protection for this delicate epistomatic surface of its leaves.
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影响因子：
3.9
作者：
Mockenhaupt, Bernd;Ensikat, Hans-Juergen;Barthlott, Wilhelm
通讯作者：
Barthlott, Wilhelm
影响因子：
3.9
作者：
Extrand, C. W.;Moon, Sung In
通讯作者：
Moon, Sung In
影响因子：
29.4
作者：
Barthlott, Wilhelm;Schimmel, Thomas;Bohn, Holger F.
通讯作者：
Bohn, Holger F.
影响因子：
3.8
作者：
Koch, Kerstin;Dommisse, Aarnoud;Barthlott, Wilhelm
通讯作者：
Barthlott, Wilhelm
影响因子：
1.5
作者：
Balmert, Alexander;Bohn, Holger Florian;Barthlott, Wilhelm
通讯作者：
Barthlott, Wilhelm