Lotus in India is widely seen and used in rituals. In Indian civilization, the freshness of lotus flower (plate 5B) that blooms out of mud yet mud does not touch it has inspired philosophically, metaphorically and in literature for years.The metaphorical and religious connotation of lotus flower’s character has always remained important in Oriental and Indian cultures. It has always amazed people to seeing how water never sticks to the leaf surface (plate 5A). The scientific study of the structure of the lotus leaf (plate 5C) has revealed fascinating facts that has inspired designers for innovations.

“On the lotus leaf (widely quoted as an example in nano-science circles) the waxy "nano-rough" surface structure of the leaf creates a vast number of hydrophobic (water repelling) contact points with water droplets on the leaf.”
(Read more: http://en.wikipedia.org/wiki/Lotus_effect ; Nov. 5, 2012) 

The surface of lotus leaf has billions of tiny contact points protecting the surface from water and dust. The amazing characteristicof lotus leaf structure has naturally raised curiosity among designers. Overall, the surface area of the leaf is enormous, but the billions of tiny contact points (plate 5C) don't allow the contact angle between the surface and water droplets to reach the critical angle where their surface tension would break.  As a result, the water remains in "beads" and simply rolls off the leaf, (collecting any dust or dirt debris which similarly doesn't penetrate the leaf surface along the way).

Rolling small quantity of water on a lotus-structured surface (fabric) would attract dirt particles while rolling on the surface. The very little amount of dirt that accumulates on the surface may be cleaned with negligent amount of water. The nano- structured surface would have "Self-cleaning"mechanism where very little dirt particles do not stick to these nano-surfaces.  Therefore, the need for laundry detergents and frequent cleaning is greatly reduced.The water consumption for cleaning may be reduced to great extent.The water would be saved and eco-friendly condition is created.

Conclusion

Nature has endless paradigms to offer. It needs keen observation and innovative concept to help the human civilization. Thus a sense of interaction between man-nature would create healthier world.The mother-nature can teach us endless things to build healthy environment.