Unimolecular electronics and rectifiers

Unimolecular or molecular-scale electronics has made huge progress towards unimolecular resistors, switches, rectifiers, negative differential resistance devices, and gain-less single-electron transistors. Twelve unimolecular rectifiers have been found in Tuscaloosa, and many others elsewhere. The challenges are to understand the “metal|molecule” interface and to make reliable unimolecular electronic devices.