List of Articles Quantum-dot cellular Automata

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  1 - A New Coplanar Full Adder/Subtractor in Quantum-Dot Cellular Automata Technology
  Mohsen Vahabi Amir Sabbagh Molahosseini
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  2 - Introducing an Innovative D Flip-Flop for Designing Quaternary QCA Register
  Alireza Navidi Reza Sabbaghi-Nadooshan Massoud Dousti
  Taking advantage of advances in Nanotechnology, the quantum-dot cellular automata (QCA) has overcome many limitations that complementary metal-oxide-semiconductor (CMOS) had been confronted. Undesirable characteristics such as too many leakage currents limit the CMOS de More

  Taking advantage of advances in Nanotechnology, the quantum-dot cellular automata (QCA) has overcome many limitations that complementary metal-oxide-semiconductor (CMOS) had been confronted. Undesirable characteristics such as too many leakage currents limit the CMOS designs in nano dimensions. The idea of designing multiple-valued logic (MVL) systems rather than standard binary has gotten attractive to many designers. The application of MVL in the design of digital circuits offers so many advantages over traditional methods. D flip-flop is a primary sequential circuit in any register. In this paper, a novel quaternary D flip-flop based on introducing quaternary QCA (QQCA) is presented. The structure of our quaternary model is clarified. Also, we have proposed a 4-qubits register by utilizing the presented quaternary D flip-flop. Both circuits got simulated and evaluated by QCASim (quaternary edition). QCASim can illustrate the simulation result in a truth table and a waveform format. Our work got compared with other published works. The simulation results show that our proposed circuit is efficient in terms of latency and energy consumption. Manuscript profile
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  3 - Computational Circuit Design Using a New Seven-Input Majority Gate in Quantum-dot Cellular Automata
  Farzaneh Jahanshahi Javaran Somayyeh Jafarali Jassbi Hossein Khademolhosseini Razieh Farazkish
  The quantum-dot cellular automata (QCA) technology is a computational technology used to build nano-scale circuits. When the dimensions of the components decrease, the sensitivity of the circuit increases and the quantum circuits become more vulnerable to the occurrence More

  The quantum-dot cellular automata (QCA) technology is a computational technology used to build nano-scale circuits. When the dimensions of the components decrease, the sensitivity of the circuit increases and the quantum circuits become more vulnerable to the occurrence of defects and radiation in the environment. The two major gates in this technology are inverter and majority gates, and most circuits are built based on these two gates. This paper aimed to design a seven-input majority gate in quantum-dot cellular automata by imposing low overhead on the circuit. Using a majority gate with more inputs reduces cell count, latency, and complexity in the QCA circuit. However, perhaps the need to use the seven-input gate is not yet felt we then design and implement a number of logic circuits. A new 7-input majority gate is designed in this paper, with 19 cells. The proposed structure is single-layer with an occupied area of 24564 nm2 that produces the correct output in one clock phase, then a four-input AND gate, a four-input OR gate, a two-input XOR gate, a two-input XNOR, a three-input XOR gate and a full adder are implemented using the designed seven-input gate. Including all multi-bit full adders, using the proposed seven-input gate. The proposed full adder is designed by the seven-input majority gate proposed and a fault-tolerant three-input majority gate. Therefore, it can be said that the designed full adder is somewhat tolerable, that means, it is somewhat tolerable against the fault that occur in this technology. QCAPro software is used to analyze the energy consumption of the recommended structure. Then, the circuit performance is evaluated using QCADesigner 2.0.3 simulator software for quantum-dot cellular automata.   Manuscript profile
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  4 - Designing a New Gate-Diffusion Input in Quantum-Dot Cellular Automata Technology
  Hamidreza Sadrarhamii Sayed Mohammadali Zanjani Mehdi Dolatshahi Behrang Barekatain
  Quantum-dot cellular automata (QCA) is a modern technology, which has higher speed, lower power consumption, higher density, and lower complexity than conventional technologies, such as CMOS. Moreover, the gate diffusion input (GDI) technique has been successful in redu More

  Quantum-dot cellular automata (QCA) is a modern technology, which has higher speed, lower power consumption, higher density, and lower complexity than conventional technologies, such as CMOS. Moreover, the gate diffusion input (GDI) technique has been successful in reducing complexity, area, and energy consumption in low-power circuit designs. In this technique, a wide range of complex logic functions can be implemented using only two transistors as the main block. In this study, a QCA-based GDI block is proposed using only 11 cells as a standard design unit that can be used to implement basic functions such as AND, OR, MUX, BUFFER, NOT and XOR in digital circuits. QCADesigner simulations of the functions in 18 nm technology indicate the superior performance of the proposed block with only one clock cycle delay in performing the operations. Moreover, the power consumption analysis of the designed circuits is performed using QCADesigner. The advantages of the proposed circuit compared to previous designs are 31% reduction in cell count, 50% smaller surface area, and 17% reduction in total energy loss. Manuscript profile
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  5 - A New Design for Two-input XOR Gate in Quantum-dot Cellular Automata
  Hossein Khademolhosseini Yaser Nemati
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  6 - Design and Analysis of a Fault Tolerant 3-Input Majority Gate in Quantum-dot Cellular Automata
  Somayyeh Jafarali Jassbi Farzaneh Jahanshahi Javaran Hossein Khademolhosseini Amir Sabbagh Molahosseini
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  7 - New Fault-Tolerant Majority Gate for Quantum Dots Cellular Automata
  Razieh Farazkish
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  8 - New Approach to Design and Implementation XOR Gate in QCA Technology
  Somayeh Aghababaei Samira Sayedsalehi
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  9 - Fault-Tolerant Techniques for Quantum-dot Cellular Automata Circuits and Systems
  Razieh Farazkish Mani Zarei
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  10 - Design of Fault-Tolerant XOR/XNOR Gate Using Fault-Tolerant NNI Gate
  Fatemeh Kiayi Behnaz Gharekhanlou Alireza Kashaninya
  10.30495/ijsee.2022.1935935.1126
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  11 - Design and Implementation of Tile-shaped Fault-tolerant XOR/XNOR Gates Based on Intercellular Interactions
  Fatemeh Kiayi Behnaz Gharekhanlou Alireza Kashaninya
  10.30495/ijsee.2021.681966
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  12 - A Smart Four-Input Minority Gate Based on QCA Technology
  Samaneh-Sadat Hashemipour Keivan Navi
  10.30495/ijsee.2021.682521
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