Quantum-dot Cellular Automata (QCA) provide very high scale integration potential, switching frequency, and have extremely low power demands, which make the QCA technology quite attractive for design implementation of large-scale, high-performance nanoelectronic circuits. However, state-of-the-art circuit designs were not derived by following a set universal rules, as is case CMOS circuits, and...

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...

The current Very Large-Scale Integration (VLSI) technology has reached its peak due to the fundamental physical limits of Complementary Metal-Oxide-Semiconductor (CMOS). Quantum-dot Cellular Automata (QCA) is considered a proper alternative CMOS in digital circuit design. QCA features like low power, small area, and high speed nanoscale A code converter that converts determined another one. Cod...

Quantum-dot cellular automata (QCA) are prospective nanotechnology with striking performance to tackle the shortcomings of complementary metal-oxide-semiconductor (CMOS) transistor-based technology such as fabrication dimensions and switching speed. The demultiplexer, a crucial component for design many logic circuits, comprises circuit separating multiplex data into data. demultiplexer is high...

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...