The 5th Annual World Congress of Nano Science and Technology-2015 (Nano S&T-2015) with the Theme of “Small Size, Big World” will be held in Xi’an, China during September 24-26, 2015. This congress will comprise 10 professional parallel forums including Advanced Nanomaterials, Nanomedicine and Nanobiotechnology, etc. The main objective of Nano S&T-2015 is to provide a comprehensive global platform for experts and participants from government, academia, enterprise, and other organizations in the related field to exchange ideas and present results of ongoing research in the most state-of-the-art areas of nanoscience and nanotechnology. Our delegates will enjoy the great opportunity to discuss the new ideas and application experiences face to face, to establish business or research relations and to find global partners for future collaboration.