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Abstract <p>The quantum-dot cellular automata (QCA) nanotechnology is the best possible solution to overcome the secondary effects of the conventional complementary metal oxide semiconductor (CMOS) technology. The CMOS technology fails in ultratechnology nodes because of material’s restrictions. The QCA nanotechnology is not only the solution for ultratechnology nodes but also consists of many advantages, such as higher speed, lower power, and lower area design for the digital logic circuits. In the communication field, demultiplexer (demux) is an imperative component to receive the original message at receiver end. Therefore, this paper proposed an effective, highly optimized demux circuit using the QCA nanotechnology. The proposed demux contains only 14 cells and 0.25 clock. The fault analysis for the proposed demux is depicting that the proposed demux is 78.65% fault-tolerant. The comparative results are also presented in this paper to highlight the proposed demux.</p>

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Nanosized Fault-Tolerant Demultiplexer Design in Quantum-Dot Cellular Automata Nanotechnology

  • 期刊论文

  • 发表日期：

    2026年2月1日

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  • Nandan Vaid,
  • Vijay Kumar Sharma,
  • Prashant Kumar,
  • Sudakar Singh Chauhan

摘要

Abstract

The quantum-dot cellular automata (QCA) nanotechnology is the best possible solution to overcome the secondary effects of the conventional complementary metal oxide semiconductor (CMOS) technology. The CMOS technology fails in ultratechnology nodes because of material’s restrictions. The QCA nanotechnology is not only the solution for ultratechnology nodes but also consists of many advantages, such as higher speed, lower power, and lower area design for the digital logic circuits. In the communication field, demultiplexer (demux) is an imperative component to receive the original message at receiver end. Therefore, this paper proposed an effective, highly optimized demux circuit using the QCA nanotechnology. The proposed demux contains only 14 cells and 0.25 clock. The fault analysis for the proposed demux is depicting that the proposed demux is 78.65% fault-tolerant. The comparative results are also presented in this paper to highlight the proposed demux.