Abstract
Nano structured materials (NSM) of carbon, lipid, metals, in particular silver and goldnano structured materials are being used for killing of undesired microorganism. Magnetic iron oxide nano structured materials finds it application in multiple fields ranging from diagnosis to treatment of diseases. Nano structured materials are being used in bio imaging, protein delivery, gene delivery, drug delivery, sunscreens, candies, beauty care products. Preparation of these nanoparticles does not involve generalized method but different types of materials are synthesized by different strategies to achieve nanoscale dimension, so their range of effect will also vary depending upon the material and strategy involved. In recent years, nano structured materials and its effect on human health has become a debatable issue as no one has conducted a large scale study of toxicity caused by nano structured materials.
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