This book presents and highlights some of the key advances on, but not limited to, electronic and optoelectronic devices of nanometer/molecular scale, nanomechanics and nanoelectromechanical systems, electromechanical coupled devices, manipulation and aligning processes at nanometer/molecular scale, quantum phenomena, modeling of nanodevices and nanostructures, fabrication and property characterization of nanodevices, and nanofabrication with focused beam technology.