Design of nano communication networks using quantum dot cellular automata

Abstract

Recent trends in nanotechnological field are the exploitation of quantum dot cellular newlineautomata (QCA) as a substitute in advance to existing transistor based complementary metal newlineoxide semiconductor (CMOS) technology to fabricate nano circuit. Ultra low heat newlinedissipation, faster clocking and high device density make the QCA as a raising research area newlinein nanotechnological field to suppress the field effect transistor (FET) based circuit. QCA newlinelogic gates are the key factor to achieve nano scale digital logic circuits. Besides, reversible newlinelogic has widespread applications in QCA. The low power dissipation and high circuit newlinedensity of QCA pledge the energy efficient design of logic circuit at a nano scale level. newlineHowever, the necessity of too many logic gates and detrimental garbage outputs may limit newlinethe functionality of a QCA based logic circuit. In this chapter, the detailed study about QCA newlinelogic devices such as QCA cell, majority gate, inverter, wire, cross over, and QCA clocking newlinehas been performed. The working principle of QCA circuit simulator QCADesigner tool has newlinebeen explored. The idea of reversible logic gates is also outlined. newline