Toward Nanocomputers

Abstract
Nanoelectronics is the next frontier after microelectronics, and research in this field is advancing at a breathtaking rate. In their Perspective, Tseng and Ellenbogen highlight four recent papers, including the reports by Huang et al. and Bachtold et al., which show that logic circuits can be made with molecular-scale components. Many challenges remain to be overcome until a nanocomputer can be realized, but these studies move this ambitious goal one important step closer.