Beautiful lotus lightness finds droplets contact test, rolled down from the lotus leaf drops can remove dirt and bacteria on adsorption, scientists call this phenomenon the leaves of the "self-cleaning effect" or "Dutch Ye effect. " 1997 German botanist Professor William Bass Lott inspiration from the successful production of easy-to-clean surface buildings and transportation coatings. Recently, researchers at the University of Michigan through the development of theoretical models, the first successful nano hairy structure and chemical composition and microstructure separated, the essence of the principle of self-cleaning lotus effect research. When water droplets fall on a lotus leaf drops angle formed between the leaves with water drops a height of the contact angle (greater than 90 degrees), so as to gather pearls without diffusion. Typically, human skin has a slight hydrophobicity, the contact angle is about 90 degrees, and the contact angle approaches 170 degrees lotus leaf, leaf surface extremely hydrophobic. But scientists found that although few actually touching the leaves of the rain droplets fall is not without friction, water droplets away dirt and bacteria on the leaves, and act as a "self-cleaning" function. Scientists for the first time the hairy leaves of the nano-structure and micro-structure and chemical composition separated. They found that, in addition to containing lotus leaf surface wax ingredients, "lotus effect" and the leaves of the two structures related to water droplets angle measuring instrument, one is a micron-sized projections, one is hairy nanoscale structures . The contact angle of the two structures containing lotus leaf is 142 degrees, the contact angle of the leaves containing only micro structure is 126 degrees, the contact angle of the surface of the wax alone containing only 74 degrees. Scientists believe that hairy nanoscale structure increases the contact angle of 16 degrees, the two structures are the main causes of "lotus effect". "Lotus effect" as a good model that can be used to study the contact angle of water droplets angle test many areas, such as lotus effect on the production of coatings can be easy to clean the surface of the house or building, the future will have a lotus effect broader development prospects around the sol particles, due to the electrostatic force of gravity to form a tight layer with a charge, because the electrical thermal motion of ions in the outer layer formed close and tight layer of equal magnitude but opposite diffusion layer close layer and the diffusion layer collectively known as electric double layer. In fact, near the solid-liquid interface, there are no electrical double layer structure. Under the external electric field, demonstrated when sol dispersion medium reverse micelles and the potential difference relative movement called ζ potential. Its magnitude and the electrolyte concentration great relationship, if only relative motion ζ potential and medium particles manifested, it is the potential of the close of the difference between the diffusion layer. Droplets drops Shanwei angle tester _ _ ShengDing angle instrument provided by the Dongguan Sheng Ding Precision Instrument Company. Dongguan Sheng Ding Precision Instrument Co., Ltd. (www.dgshengding.com) strong, credible, in Dongguan, Guangdong specialized instrumentation industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead ShengDing instrument and you hand into the brilliant, for a better future!