Evolution of Quantum Cellular Automata in Graphene Nanoribbons

León, Alejandro; Barticevic, Z.; Pacheco, M.

doi:10.1166/jctn.2012.2099

Cited by 8 publications

(5 citation statements)

References 22 publications

(27 reference statements)

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“…Computational simulation works have advanced this field and helped reveal the potential of CNT devices in future technologies. [27][28][29][30][31][32][33] Further work should include quantum mechanics to reveal structural and electronic properties of unusual carbon nanostructures, electron transport properties, and influence of electric and magnetic fields. [34][35][36][37][38][39][40][41][42] …”

Section: Resultsmentioning

confidence: 99%

Controlling Resonance Frequencies of Double-Walled Carbon-Nanotube Oscillators with Divided Outertubes

Lee¹,

Kang²

2014

j nanosci nanotechnol

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We investigated the resonance frequency distributions of carbon nanotube (CNT) oscillators with an intertube gap using molecular dynamics simulations. The resonance frequency distributions could be regressed by the use of Gaussian distributions. The maximum resonance frequencies linearly decreased with increasing initial velocity of the coretube. For the same initial velocity of the coretube, the maximum resonance frequencies were constant regardless of gap spacing changes, and the center positions of the Gaussian distributions were shifted by changing the outertube length whereas their standard deviations were not changed. Although their standard deviations were influenced by the initial velocity of the coretube, the normalized resonance frequencies could be regressed into single Gaussian distribution within some error. So considering the difficulty of exactly controlling of the initial velocity, the resonance frequency distribution predicted by the gap spacing can give important revolution for CNT-oscillators to be utilized as components of nanoelectromechanical system.

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Section: Resultsmentioning

confidence: 99%

Controlling Resonance Frequencies of Double-Walled Carbon-Nanotube Oscillators with Divided Outertubes

Lee¹,

Kang²

2014

j nanosci nanotechnol

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“…These properties make for graphene to be an advanced material over the CNTs. Finally we surely note that theoretical researches for graphene continuously increase [78][79][80][81][82][83][84][85][86][87] and investigate various properties including quantum mechanical properties of graphene-based quantum nanodevices. 88 …”

Section: Resultsmentioning

confidence: 99%

Molecular Dynamics Study on Graphene-Based Nanoelectromechanical Relays

Hwang¹,

Lee²,

Kang³

2013

Jnl of Comp & Theo Nano

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We present the simple schematics of the double-gate graphene-nanoribbon (GNR)-based nanoelectromechanical relay and the model schematic of its fabrication processes, and investigated their operation dynamics via classical molecular dynamics simulations. The key operations of the proposed GNR relay are based on the low mass density, the large area, and the flexible deflection of the GNR. The electromechanical dynamics of the GNR-relay are well understood by five forces such as the capacitive force between the top electrode and the GNR, the van der Waals force between the top electrode and the GNR, the capacitive force between the bottom electrode and the GNR, the van der Waals force between the bottom electrode and the GNR, and the elastic force of the GNR. The switching speed of the GNR-relay decreases by increasing the electrostatic force. We anticipate the realization of this proposed GNR-based nano-electromechanical rely in further experimental works.

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“…Recently the potential of graphene devices in future technologies have intensively investigated via computation and theoretical researches. [42][43][44][45][46][47][48][49][50][51] Therefore, further work will include graphene-based oscillators and their dynamics properties, and should include quantum mechanical properties to reveal structural and electronic properties of unusual carbon nanostructures, electron transport properties, and influence of electric and magnetic fields. 52-63…”

Section: Resultsmentioning

confidence: 99%

Velocity-Dependent Frequency of Carbon-Nanotube Oscillators with Intertube Gaps

Kang¹,

Hwang²

2013

Jnl of Comp & Theo Nano

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We investigated the resonance frequencies of the carbon-nanotube (CNT)-oscillator with intertube gap as functions of the initial velocity of the coretube and the total length of the outertuber including intertube spacing via classical molecular dynamics (MD) simulations. The maximum resonance frequencies of the CNT-oscillators decreased with increasing initial velocity of the coretube. Two operation modes were found in the results of the MD simulations. One was similar to that of the simple CNT oscillators and the other was out of the simple CNT oscillators because of the gap spacing between both outertubes. For the structure with large intertube gaps, the coretube, which was initially oscillated between both outertubes, finally settled into an outertube after its kineticenergy dissipations, and this gave a potential that the CNT-oscillators with intertube gaps can be applied to a relay-switching device and a shuttle memory.

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Evolution of Quantum Cellular Automata in Graphene Nanoribbons

Cited by 8 publications

References 22 publications

Controlling Resonance Frequencies of Double-Walled Carbon-Nanotube Oscillators with Divided Outertubes

Controlling Resonance Frequencies of Double-Walled Carbon-Nanotube Oscillators with Divided Outertubes

Molecular Dynamics Study on Graphene-Based Nanoelectromechanical Relays

Velocity-Dependent Frequency of Carbon-Nanotube Oscillators with Intertube Gaps

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