Novel Design of High Polarized Inverter Using Minimum Number of Rotated Cells and Related Kink Energy Calculation in Quantum dot Cellular Automata

Quantum Dot Cellular Automata (QCA) has been emerged as a cut-in nano-technology in the field of digital logic architecture. It is the most emerging technology in nanoscience. QCA designed circuits require lesser power & it has high switching speed and high packaging density with respect to current CMOS technology. One of the basic building blocks of QCA circuits is QCA inverter. The conventional QCA inverters require more normal cells and it has less polarization. In this paper, we have designed high polarized inverters using minimum number of rotated (45˚) QCA cells. Till now, the conventional inverters which have large polarization, they require three to five normal cells. We have designed the novel inverter using three rotated cells whose polarization is more than the conventional three normal cells inverter. We increasing the polarization i.e. make the three rotated cells inverter circuit more fault- free by adding extra rotated cells at the output section. In each case, the designed rotated cells inverters have more polarization (i.e. more fault free) than conventional inverters though it has same number of cells. Our finally designed high polarized rotated cells inverter has five cells and its polarization is greater than any type of conventional inverters designed till now. Also, here we calculate the kink energy of each rotated cells inverters.