Characterisation of a bis‐ferrocene molecular QCA wire on a non‐ideal gold surface

Graziano, Mariagrazia; Wang, Ruiyu; Roch, Massimo Ruo; Ardesi, Yuri; Riente, Fabrizio; Piccinini, Gianluca

doi:10.1049/mnl.2018.5201

Cited by 17 publications

(3 citation statements)

References 29 publications

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“…The parameters are dependent on the exact technologies used to implement the QCA and clock layers of a device. In the physical implementation, more details about wires were presented in Pulimeno et al 27 and Graziano et al 28 Both active and passive modules would be generated from full populated grids by selectively undepositing cells if the fabrication allows in the future.…”

Section: Mcs Design Methodsmentioning

confidence: 99%

Module‐based design method using clocking scheme for quantum‐dot cellular automata

Deng

Xie

Zhang

et al. 2021

Circuit Theory & Apps

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Quantum-dot cellular automata (QCA) is a field-coupled nanotechnology with unique computing paradigms to be one of the strong alternatives to replace the traditional complementary metal oxide semiconductor (CMOS) in the future in theory. With the development of its fabrication technique and increasing circuit scale, the modular design method of QCA circuits is promoted, which consists at least of two connotations: designing appropriate modules for circuits and allocating applicable clock to circuits. In this paper, a module-based design method using a clocking scheme (MCS) in QCA is proposed, which can be categorized into the modular design methodology. A complete module

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Section: Mcs Design Methodsmentioning

confidence: 99%

Module‐based design method using clocking scheme for quantum‐dot cellular automata

Deng

Xie

Zhang

et al. 2021

Circuit Theory & Apps

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“…We evaluate the total conformation energy W 0 as the energy of a system composed of N non-interacting molecules (ideally, the distance among molecules is consider infinite). Indeed, at the current state, molecular FCN circuits are typically conceived as molecular monolayers constituted by a single molecular species [11,37]. As a consequence, the system conformation energy is:…”

Section: Internal Energy: the Conformation Energymentioning

confidence: 99%

A Model for the Evaluation of Monostable Molecule Signal Energy in Molecular Field-Coupled Nanocomputing

Ardesi

Graziano

Piccinini

2022

JLPEA

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Molecular Field-Coupled Nanocomputing (FCN) is a computational paradigm promising high-frequency information elaboration at ambient temperature. This work proposes a model to evaluate the signal energy involved in propagating and elaborating the information. It splits the evaluation into several energy contributions calculated with closed-form expressions without computationally expensive calculation. The essential features of the 1,4-diallylbutane cation are evaluated with Density Functional Theory (DFT) and used in the model to evaluate circuit energy. This model enables understanding the information propagation mechanism in the FCN paradigm based on monostable molecules. We use the model to verify the bistable factor theory, describing the information propagation in molecular FCN based on monostable molecules, analyzed so far only from an electrostatic standpoint. Finally, the model is integrated into the SCERPA tool and used to quantify the information encoding stability and possible memory effects. The obtained results are consistent with state-of-the-art considerations and comparable with DFT calculation.

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“…In recent studies, we started analysing the molecule considering its effective physical behaviour, by exploiting the so-called MosQuiTo (Molecular Simulator Quantum-dot cellular automata Torino) methodology [6,7]. This methodology allows to formulate considerations that link the physical characteristics of the molecule with the Digital Object Identifier 10.29292/jics.v16i1.474 system-level circuit analysis [8,9,10]. In the literature, molecules are generally considered static elements which vary their charge distribution as a consequence of the interaction with external stimuli [7,2].…”

Section: Introductionmentioning

confidence: 99%

Ab initio Molecular Dynamics Simulations of Field-Coupled Nanocomputing Molecules

Ardesi

Gaeta

Beretta

et al. 2021

JICS

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Molecular Field-Coupled Nanocomputing (FCN) represents one of the most promising solutions to overcome the issues introduced by CMOS scaling. It encodes the information in the molecule charge distribution and propagates it through electrostatic intermolecular interaction. The need for charge transport is overcome, hugely reducing power dissipation.At the current state-of-the-art, the analysis of molecular FCN is mostly based on quantum mechanics techniques, or ab initio evaluated transcharacteristics. In all the cases, studies mainly consider the position of charges/atoms to be fixed. In a realistic situation, the position of atoms, thus the geometry, is subjected to molecular vibrations. In this work, we analyse the impact of molecular vibrations on the charge distribution of the 1,4-diallyl butane. We employ Ab Initio Molecular Dynamics to provide qualitative and quantitative results which describe the effects of temperature and electric fields on molecule charge distribution, taking into account the effects of molecular vibrations. The molecules are studied at near-absolute zero, cryogenic and ambient temperature conditions, showing promising results which proceed towards the assessment of the molecular FCN technology as a possible candidate for future low-power digital electronics. From a modelling perspective, the diallyl butane demonstrates good robustness against molecular vibrations, further confirming the possibility to use static transcharacteristics to analyse molecular circuits.

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Characterisation of a bis‐ferrocene molecular QCA wire on a non‐ideal gold surface

Cited by 17 publications

References 29 publications

Module‐based design method using clocking scheme for quantum‐dot cellular automata

Module‐based design method using clocking scheme for quantum‐dot cellular automata

A Model for the Evaluation of Monostable Molecule Signal Energy in Molecular Field-Coupled Nanocomputing

Ab initio Molecular Dynamics Simulations of Field-Coupled Nanocomputing Molecules

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