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While still relatively " new " , the quantum-dot cellular automata (QCA) appears to be able to provide many of the properties and functionalities that have made CMOS successful over the past several decades. Early experiments have demonstrated and realized most, if not all, of the " fundamentals " needed for a computational circuit – devices, logic gates,(More)
Logical devices made from nano-scale magnets have many potential advantages - systems should be non-volatile, dense, low power, radiation hard, and could have a natural interface to MRAM. Initial work includes experimental demonstrations of logic gates and wires and theoretical studies that consider their power dissipation. This paper looks at power(More)
This paper presents the Quantum-Dot Cellular Automata (QCA) physical design problem, in the context of the VLSI physical design problem. The problem is divided into three subproblems: partitioning, placement, and routing of QCA circuits. This paper presents an ILP formulation and heuristic solution to the partitioning problem, and compares the two sets of(More)
It is well recognized that novel computational models, devices and technologies are needed in order to sustain the remarkable advancement of CMOS-based VLSI circuits and systems. Regardless of the models, devices and technologies, any enhancement/replacement to CMOS must show significant gains in at least one of the key metrics (including speed, power and(More)
<i>Pipelining is a technique that has long since been considered fundamental by computer architects. However, the world of nanoelectronics is pushing the idea of pipelining to new and lower levels &#8212; particularly the device level. How this affects circuits and the relationship between their timing, architecture, and design will be studied in the(More)
Despite the seemingly endless upwards spiral of modern VLSI technology, many experts are predicting a hard wall for CMOS in about a decade. Given this, researchers continue to look at alternative technologies, one of which is based on quantum dots, called quantum cellular automata. While the first such devices have been fabricated, little is known about how(More)
In order to continue the performance and scaling trends that we have come to expect from Moore&#8217;s Law, many emergent computational models, devices, and technologies are actively being studied to either replace or augment CMOS technology. Nanomagnet Logic (NML) is one such alternative. NML operates at room temperature, it has the potential for low power(More)
When exploring computing elements made from technologies other than CMOS, it is imperative to investigate the effects of physical implementation constraints. This paper focuses on molecular quantum-dot cellular automata circuits. For these circuits, it is very difficult for chemists to fabricate wire crossings (at least in the near future). A novel(More)