28 June 2005 Logic optimization technique for molecular cascades
Author Affiliations +
Molecular cascades introduced in provide new ways to exploit the motion of individual molecules in nanometer-scale structures. Computation is performed by purely mechanical means similarly to the toppling of a row of standing domino. A specific feature of molecular cascades is that an inverter cannot be build, because it would require that all molecules in the inverter's output untopple when the input cascade topples. This is not possible because an untoppled state has higher energy than a toppled one. As a solution, we propose to avoid the need for inverters by representing signals by the dual-rail convention. As a basic building block we use a molecular block, which has four inputs x1,...,x4 such that x3 = x'1, x4 = x' x2, and two outputs ƒ1 = x1 • x2 and ƒ2 = x3 + x4. If input variables are available in both complemented and non-complemented form, then any Boolean function can be implemented by a composition of such molecular blocks. We present an experimental tool which first uses a rule-based randomized search to optimize a Boolean network and then maps it into a network of interconnected molecular blocks.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Petra Farm, Elena Dubrova, Hannu Tenhunen, "Logic optimization technique for molecular cascades", Proc. SPIE 5838, Nanotechnology II, (28 June 2005); doi: 10.1117/12.607827; https://doi.org/10.1117/12.607827


Control of quantum dynamics: issues and alternatives
Proceedings of SPIE (June 17 1994)
Statistical approximation in line wing theory
Proceedings of SPIE (July 01 1992)
Experimental progress in quantum-dot celluar automata
Proceedings of SPIE (June 11 2003)
Clocked quantum-dot celluar automata devices
Proceedings of SPIE (June 11 2003)
VLSI digital signal processing: some arithmetic issues
Proceedings of SPIE (October 22 1996)

Back to Top