Engineered nanoparticles are widely used for bio-medical applications, particularly for therapeutic and diagnostic use, for example drug delivery, early cancer detection and treatment, bio-imaging, sensing and gene therapy. Environmental uses of engineered particles covers the area of water remediation, pollution control, and harnessing clean energy. In the electrical world they can be applied and used as chips due to their high electrical and optical properties, for example in computers, antennas of televisions and other electrical signals in televisions, radios and phones. They have been developed to reinforce materials by making them more flexible, durable and resistant to destruction. They are used in making stainless fabrics, long lasting tennis balls, shoes, glasses, rubber and better car tyres.