ABSTRACT
The biomedical application of nanoparticles is a rapidly emerging research area. This is because nanoparticles have length scales similar to various biomolecules and biological events and can be designed to understand the language of the biological world. Although the size-dependent property of many nanoparticles is well established, their transformation into nanoprobes that can provide information about the biological world is challenging. This chapter focuses on the importance of the nanometer length scale and the role of functionalization of nanoparticles in the context of their biomedical application.
