The title "Nano Biotechnology for Biomedical and Diagnostics Research" will address research aspects related to nanomaterial in imaging and biological research, nanomaterials as a biosensing tool, DNA nanotechnology, nanomaterials for drug delivery, medicinal and therapeutic application and cytotoxicity of nanomaterials. These topics will be covered by 16 different manuscripts. Amongst the authors that will contribute to the book are major scientific leaders such as S. Weiss - UCLA, I. Willner, and G. Golomb -- HUJI, S. Esener - UCSD, E.C. Simmel - Tech. Univ. Munchen, I. Medintz -- NRL, N. Hildebrandt - Universit Paris and more. The manuscripts in the book intend to present specifically biological, diagnostics and medical problems with their potential solution by nano technology or materials. In this respect this book is unique, since it would arise from the biological problems to the nano technology possible solution and not vice versa.