Towards a molecular QCA wire: simulation of write-in and read-out systems

Design and characterization of a new fault-tolerant full-adder for quantum-dot cellular automata

“…In order to verify the functionality of the proposed device, some physical proofs are provided. 30 The results confirm our claims and its usefulness in designing digital circuits. 31 Ó 2015 Elsevier B.V. All rights reserved.…”

Effectiveness of Molecules for Quantum Cellular Automata as Computing Devices

“…Therefore, we perform a comparative analysis among three molecules: the diallyl-butane and the decatriene, which have been proposed by Lent and his coworkers and are often used as a reference in the MQCA literature [8,15], and the bis-ferrocene. This latter molecule has been synthesized ad-hoc for MQCA technology [21,22] and already discussed as possible QCA candidate [5,[23][24][25][26]. In particular, the authors in [25] presented a preliminary study which demonstrates the possibility to use a simple quantity (The Aggregated Charge, figure of merits which will be analyzed in detail in Section 3) to describe the molecule as computing device.…”

Charge distribution in a molecular QCA wire based on bis-ferrocene molecules

“…In particular, we forced a logic state on the first molecule of the wire (Molecule 1, as shown in Fig. 1 (A)) applying an electric field of 2 V/nm along the ferrocenes axes (as already discussed in [11], [12]). Then we used the charge configuration of this molecule as stimulus for the following cell (Molecule 2).…”

“…In order to do this, we defined a new figure of merit for our analysis, the aggregated charge of the dots, simply summing up the charge of the atoms that constitute the dot [12]. In addition, for each step of our simulation we emulated the driver molecule (Molecule i-1) with a system of point charges built placing the aggregated charge Q1, Q2 and Q3 in the same position of the dots, as shown in Fig.…”