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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.
It may form a whitish film or bloom on leaves, fruits and other plant organs. Chemically, it consists of hydrophobic organic compounds, mainly straight-chain aliphatic hydrocarbons with or without a variety of substituted functional groups. The main functions of the epicuticular wax are to decrease surface wetting and moisture loss.
Lotus root tea, called yeongeun-cha (연근차, 蓮根茶, [jʌn.ɡɯn.tɕʰa]) in Korean, is a tea made by infusing dried lotus root slices or mixing lotus root powder in hot water. [6] Lotus root powder for tea can be made by either by drying lotus root juice, or grinding dried lotus root slices into powder. [2]
Navigating wet leaves. That fall foliage can accumlate and get wet, creating a slippery surface that’s ripe for slips and falls. “If you have the ability, do not walk on wet leaves ...
The lotus effect has applications in biomimetic technical materials. Dehydration protection provided by a maternal cuticle improves offspring fitness in the moss Funaria hygrometrica [2] and in the sporophytes of all vascular plants. In angiosperms the cuticle tends to be thicker on the top of the leaf (adaxial surface), but is
Self-cleaning surfaces are a class of materials with the inherent ability to remove any debris or bacteria from their surfaces in a variety of ways. The self-cleaning functionality of these surfaces are commonly inspired by natural phenomena observed in lotus leaves, gecko feet, and water striders to name a few.
The leaves of Nelumbo are highly water-repellent (i.e. they exhibit ultrahydrophobicity) and have given the name to what is called the lotus effect. [3] Ultrahydrophobicity involves two criteria: a very high water contact angle between the droplet of water and the leaf surface, and a very low roll-off angle. [ 4 ]
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 ]