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Similar to lotus effect, a recent study has revealed honeycomb-like micro-structures on the taro leaf, which makes the leaf superhydrophobic. The measured contact angle on this leaf in this study is around 148 degrees.
Active recent research on superhydrophobic materials might eventually lead to industrial applications. Some attempts at fabricating a superhydrophobic surface include mimicking a lotus leaf surface, namely the two-tiered characteristic. This requires micro-scale surfaces with typically nanoscale features on top of them.
The ultimate goal in developing superhydrophobic surfaces is to recreate the self-cleaning properties of the Lotus Leaf that has the inherent ability to repel all water in nature. The basis for superhydrophobic self-cleaning is the ability of these surfaces to prevent water from spreading out when in contact with the surface.
Superhydrophobic coatings are also found in nature; they appear on plant leaves, such as the lotus leaf, and some insect wings. [ 4 ] This image shows highly absorbent filter paper coated with a super-hydrophobic paint developed at University College London .
Lotus plants are known for their aquatic beauty and as a symbol of longevity in some cultures, but you probably didn’t know that they’re also superhydrophobic. The surface of the lotus plant ...
A water drop on a lotus plant leaf. Superhydrophobic surfaces, such as the leaves of the lotus plant, are those that are extremely difficult to wet. The contact angles of a water droplet exceeds 150°. [6] This is referred to as the lotus effect, and is primarily a chemical property related to interfacial tension, rather than a chemical ...
One example of a superhydrophobic surface in nature is the Lotus leaf. [12] Lotus leaves have a typical contact angle of , ultra low water adhesion due to minimal contact areas, and a self cleaning property which is characterised by the Cassie-Baxter equation. [13]
The result was a lotus leaf-like surface inherent on the copper sheet. Static water contact angle measurements of the biomimetic surface were taken to be 132° after etching the copper and 153° after a stearic acid surface treatment to mimic the lotus leaf's waxy coating. A surface that mimics the lotus leaf could have numerous applications by ...