Nanografi Nanotechnology

Gold Nanoparticles/Nanopowder and Application of Gold Nanopowders/Nanoparticle General Information about Gold  Gold is a chemical element with symbol Au and atomic number 79. In its purest form, it is a bright, slightly reddish yellow, dense, soft, malleable, and ductile metal. Gold is one of the least reactive chemical elements and is solid under standard conditions. Gold Nanoparticles/Nanopowder and Applications  Gold nanoparticles/nanopowder are used as catalysts in several chemical reactions. The surface of a gold nanoparticle/nanopowder can be used for selective oxidation or in certain cases the surface can reduce a reaction. Gold nanoparticles/nanopowder are being developed for fuel cell applications. These technologies would be useful in the automotive and display industry. For photodynamic therapy Gold nanoparticles/nanopowder are also useful. Near-IR absorbing gold nanoparticles/nanopowder produce heat when excited by light at wavelengths from 700 to 800 nm...

                                                   Image retrieved from: http://tcr.amegroups.com/article/view/1547/html To treat the cancer is an inherently difficult. Sometimes after tumors have been removed, residual cancer cells remain and even live. Also, parts of a tumor cannot be removed in some cases because cancer cells attach to a vital organ.The therapeutic values of Gold nanoparticles are related with their distinctive physical properties, their interaction with tumors and destroy cancer cells. By the help of enhanced permeability characteristics of the dozens of Gold nanoparticles, cancer cells can be enveloped and annihilated.Gold nanoparticles can damage cancer cells by photo thermal ablation through mechanical damage. Therefore, healthy cells can live untouched. Moreover, because of their high atomic mass,gold nanoparticlescan absorb sign...