February 11th 2010 08:44 am
New Technology
Nano technology is one of the newest invention that use micro atoms to work. Now experts has found that nano also contain some gold. This is called as nano gold. Chuck Ager is one of the scientists that found this atom. In science world nano gold known as Colloidal Gold is a suspension of sub-micrometer-sized particles of gold in a fluid, usually water. The liquid is usually either an intense red color or a dirty yellow fish color.
Known since ancient times, the syntheses of colloidal gold was originally used as a method of staining glass. Modern scientific evaluation of colloidal gold did not begin until Michael Faraday’s. Due to the unique optical, electronic and molecular recognition properties of gold nanoparticles, they are the subjects of substantial research.
Generally, gold nanoparticles are produced in a liquid by reduction of chloroauric acid. Research in 2005 demonstrated that nanogold coated bacteria can be used for electronic wiring. Bacillus cereus was deposited on a silicon / silicon dioxide wafer lined with gold electrodes. This device was covered with poly (L-Isine). The bacterium’s surface has a negative charge, even more so due to the presence of flexible teichoic acid brushes.
Colloidal gold has been successfully used as a therapy from rheumatoid arthritis in rats. In a related study, the implantation of gold beads near arthritic hip joints in dogs has been found to relieve pain. Gold nanoparticles are being investigated as carriers for drugs such as Paaclitaxel. The administration of hydrophobic drugs requires molecular encapsulation and it is found that nanosized particles are particularly efficient in evading the reticuloendothelial system.
An in vitro experiment has shown that the combination of microwave radiation and colloidal gold can destroy the beta-amyloid fibrils and plaque which are associated with Alzheimer’s disease. The possibilities for numerous similar radiative applications are also currently under exploration.
So, you see that experts still looking for another invention of nanogold for our better life.
Tags: Acid Brushes, Bacillus Cereus, Beta Amyloid, Colloidal Gold, Electronic Wiring, Expe, Gold Beads, Gold Electrodes, Gold Nanoparticles, Hip Joints, Michael Faraday, Microwave Radiation, Molecular Encapsulation, Nano Technology, Nanosized Particles, Properties Of Gold, Recognition Properties, Silicon Dioxide, Sized Particles, Staining Glass
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