In conventional microelectronics, devices are fabricated by lithographic processes. Ultimately, for devices with feature lengths below 100nm, alternative approaches may become necessary. This book focuses on materials issues that relate to the fabrication of nanoelectronics in which the active regions of devices are either molecules or nanoparticles, and self-assembly replaces lithography. The volume is interdisciplinary in nature and features work by a diverse gathering of chemists, physicists, materials scientists and mainstream silicon engineers. Materials of interest include, but are not limited to, organic molecules, carbon nanotubes and semiconductor nanoclusters.