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The lotus effect refers to self-cleaning properties that are a result of ultrahydrophobicity as exhibited by the leaves of Nelumbo, the lotus flower. [1] Dirt particles are picked up by water droplets due to the micro- and nanoscopic architecture on the surface, which minimizes the droplet's adhesion to that surface.
Lotus flower tea, called yeonkkot-cha (연꽃차, [jʌn.k͈ot̚.tɕʰa]) or yeonhwa-cha (연화차, 蓮花茶, [jʌn.ɦwa.tɕʰa]) in Korean, is a tea made from lotus flower. [3] Often, a fresh whole flower is used to make tea. In Korean temple cuisine, this type of lotus flower tea symbolizes the blossoming of Buddhist enlightenment. [4]
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 ...
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 lotus roots are planted in pond or river bottom soil, while the leaves float on the water's surface or are held well above it. The leaf stalks (petioles) can be up to 200 cm (6 ft 7 in) long, allowing the plant to grow in water to that depth. [8] The peltate leaf blade or lamina can have a horizontal spread of 1 m (3 ft 3 in).
Hence, the lotus leaves represent remarkable superhydrophobicity. Static contact angle and contact angle hysteresis of the lotus leaf are determined around 164° and 3°, respectively. [17] With small tilting angles, water droplets on the leaf roll off and take any dirt or contaminant along, leading to self-cleaning. [18]
American lotus is an emergent aquatic plant. It grows in lakes and swamps, as well as areas subject to flooding. The roots are anchored in the mud, but the leaves and flowers emerge above the water's surface. The petioles of the leaves may extend as much as 2 m (6.6 ft) and end in a round leaf blade 33–43 cm (13–17 in) in diameter. Mature ...
Nelumbo / n ɪ ˈ l ʌ m b oʊ / [2] is a genus of aquatic plants with large, showy flowers.Members are commonly called lotus, though the name is also applied to various other plants and plant groups, including the unrelated genus Lotus.