A compendium of novel information on molecular-scale science and the application of nanocarbon, nanosilicon and biopolymer integrated nanosystems. During the 20th century, molecular-scale science and nanotechnology developed rapidly, leading to the construction of innovative materials - nanosystens from molecules (fullerenes), supramolecules (nanotubes, peapods, polymers, biopolymers (DNA, protein and their complexes) and semiconductor nanoparticles (nano-Si, SiOx, Si/SiGe dots, metal nanowires). This book presents exciting new developments of the early 21st century. Significant progress has been made in nanotechnology of building blocks for integrated nanosystems, single and assembled molecules, nanoparticles characterisation, and multifunctional applications of nanosystems. The realisation and the application of novel multifunctional nanosystems in electronics, optics,