As an emerging nanotechnology, quantum-dot cellular automata (QCA) has been considered alternative to CMOS technology that suffers from problems such as leakage current. Moreover, QCA is suitable for multi-valued logic due the simplicity of implementing fuzzy in a way much easier than technology. This paper uses quaternary cell with two isolated layers because requiring three particles design t...

Quantum-dot cellular automata (QCA) technology is believed to be a good alternative CMOS technology. This nanoscale can provide platform for design and implementation of high performance power efficient logic circuits. However, the fabrication QCA circuits susceptible faults appearing in this form missing cells, additional rotated cells displaced cells. Over years, several solutions have been p...

We report an experimental demonstration of a logic cell for quantum-dot cellular automata ~QCA!. This nanostructure-based computational paradigm allows logic function implementation without the use of transistors. The four-dot QCA cell is defined by a pair of series-connected double dots, and the coupling between the input and the output double dots is provided by lithographically defined capac...

Conventional lithography-based VLSI design technology deployed to optimize low-powered-computing and higher scale integration of semiconductor components. However, this downscaling trend confronts serious challenges of tunneling and leakage current increment to the Complementary Metal-Oxide-Semiconductor (CMOS) technology on nanoscale regimes. To resolve the physical restriction of the CMOS, Qu...

Quantum dot Cellular Automata (QCA) is one of the most popular nano-technology, with the potential for faster speed, lower power consumption and smaller size than the latest CMOS technology. One of the basic building blocks of QCA circuits is QCA wire. The conventional QCA wires require more cells and it has less polarization. In this paper, we have designed high polarized wires using minimum n...

We report an experimental demonstration of a functional cell for quantum-dot cellular automata ~QCA!, a transistorless approach to implement logic functions. The four-dot QCA cell is defined by a pair of series-connected, capacitively coupled input and output double dots. We demonstrate that, at low temperature, an electron switch in the input double dot induces an opposite electron switch in t...

Although QCA (Quantum-dot Cellular Automata) has been introduced as a new kind of technology for over a decade, it still continued to be so and its merits and flaws were yet under study for future practical use. One of the problems of this technology has been the dependency of its circuit timing to its layout. An asynchronous design methodology for QCA has been offered to solve this problem. Th...

Quantum-dot cellular automaton (QCA) is an up-coming nanotechnology in the area of nanoelectronics and is found to be an alternative solution to replace conventional CMOS technology for several reasons. It has attractive features such as faster speed, smaller size, and low power consumption compared to transistor-based technology. The experiments carried out in QCA demonstrated and realized the...

Quantum-dot cellular automata (QCA) are one of the most promising alternative platforms of the future. Recent years have witnessed the development of basic logic structures as well as more complex processing structures, however most in the realm of binary logic. On the grounds that future platforms should not disregard the advantages of multi-valued logic, Lebar Bajec et al. were the first to s...

the full adders (fas) constitute the essential elements of digital systems, in a sense that they affect the circuit parameters of such systems. with respect to the mosfet restrictions, its replacement by new devices and technologies is inevitable. qca is one of the accomplishments in nanotechnology nominated as the candidate for mosfet replacement. in this article 4 new layouts are presented fo...