Nanomaterial is defined a natural incidental or manufactured material containing particles in an unbound state or as an aggregate or as an agglomerate and where for 50 or more of the particles in the number size distribution one or more external dimensions is in the size range 1 nmampampnbspto 100 nm. Nanomaterials not only differ from the corresponding bulk materials in morphological properties but they can also demonstrate different physicochemical characteristics. Manufactured nanomaterials are regarded as key components of innovations in various fields with high potential impact such as energy generation and storage electronics photonics diagnostics integrated sensors semiconductors foods textiles structural materials sunscreens cosmetics and coatings or drug delivery systems and medical imaging equipment.