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| 1 | A creative concept for designing and simulating quaternary logic gates in quantum-dot cellular automata显示文摘New technologies such as quantum-dot cellular automata(QCA) have been showing some remarkable characteristics that standard complementary-metal-oxide semiconductor(CMOS) in deep sub-micron cannot afford. Modeling systems and designing multiple-valued logic gates with QCA have advantages that facilitate the design of complicated logic circuits. In this paper, we propose a novel creative concept for quaternary QCA(QQCA). The concept has been set in QCASim, the new simulator developed by our team exclusively for QCAs’ quaternary mode. Proposed basic quaternary logic gates such as MIN, MAX, and different types of inverters(SQI, PQI, NQI, and IQI) have been designed and verified by QCASim. This study will exemplify how fast and accurately QCASim works by its handy set of CAD tools. A 1×4 decoder is presented using our proposed main gates.Preference points such as the minimum delay, area, and complexity have been achieved in this work. QQCA main logic gates are compared with quaternary gates based on carbon nanotube field-effect transistor(CNFET). The results show that the proposed design is more efficient in terms of latency and energy consumption. | Alireza NAVIDI Reza SABBAGHI-NADOOSHAN Massoud DOUSTI | 2021 | Frontiers of Information Technology & Electronic Engineering2021，22，11： | 0 |
| 2 | Nanoscale cryptographic architecture design using quantum-dot cellular automata显示文摘Quantum-dot cellular automata (QCA) based on cryptography is a new paradigm in the field of nanotechnology. The overall performance of QCA is high compared to traditional complementary metal-oxide semiconductor (CMOS) technology. To achieve data security during nanocommunication, a cryptography-based application is proposed. The devised circuit encrypts the input data and passes it to an output channel through a nanorouter cum data path selector, where the data is decrypted back to its original form. The results along with theoretical implication prove the accuracy of the circuit. Power dissipation and circuit complexity of the circuit have been analyzed. | Bikash DEBNATH Jadav Chandra DAS Debashis DE | 2019 | Frontiers of Information Technology & Electronic Engineering2019，20，11： | 0 |
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