Nanomaterials are made up of structures at least one of whose dimensions is between approximately 1 and 100 nanometres,  thus giving them very unusual physical, chemical or biological properties.  

More and more uses are now being found for nanomaterials, since they are suitable for many innovative applications, especially in the industrial sector and in health products. The potential health hazards related to the development of manufactured nanomaterials is recognised as an important emerging risk.  See the Agency’s work in this area.