Konrad Walus writes "For new readers we provide a basic tutorial on one of the several emerging nanotechnologies (as identified by the ITRS) called quantum-dot cellular automata (QCA). There is growing interest in this concept because of its simplicity and ability to design complex circuits even though the technology is not fully developed. There is even a free open-source design and simulation tool called QCADesigner for people wishing to give QCA design a try."
