|Nanomaterials are one of the hottest topics in a wide range of scientific and industrial fields, such as biotechnology, medicine, chemistry, catalysis, sensing and so on. Human bing has been taking advantages with unique properties of nanomaterials since the ancient time. Roman glasses (e.g. Lycurgus cups) and stained glasses contain metal nanoparticles, which are the sources of their beautiful colors. In this series of lectures, we learn the unique properties of nanomterials which are considerably different from bulk materials. At the end of the series we discuss many applications in the various fields.