Applications of ENMs are diverse in areas of biology, medicine, pharmacology, biomedical imaging, drug delivery, bio-molecular sensing, tissue engineering, data storage, photocatalytic pigments, cosmetics, food, etc. In the last decade the fields of nanotechnology increased substantially with “revolutionary” nanotechnological applications [4-6]. The industrial sector in the USA and the government established the National Nanotechnology Initiative (NNI, 2000) to serve as the central point of communication, cooperation, and collaboration for all Federal agencies engaged in nanotechnology research, bringing together the expertise needed to advance this broad and complex field