Effect of temperature on kinetic nanofriction of a Brownian adparticle

Jafary-Zadeh, Mehdi; Reddy, C. D.; Zhang, Yong‐Wei

doi:10.1016/j.cplett.2013.03.020

Cited by 7 publications

(9 citation statements)

References 46 publications

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“…Here, it is worth noting that according to Fig. 3(b) , two Arrhenius relations also exist for the diffusion on pristine graphene, corresponding to two Brownian regimes with different kinetic friction mechanisms in this system 7 8 .…”

Section: Resultsmentioning

confidence: 72%

“…To compare the surface diffusion of C 60 on GNRDs with that of C 60 on infinite graphene, a series of simulations were performed for the C 60 /graphene system in the same way as the previous works 7 8 9 . At the beginning of each simulation, we performed energy minimization using Polak-Ribiere conjugate gradient (CG) method as implemented in LAMMPS package.…”

Section: Methods and Modelmentioning

confidence: 99%

“…The corresponding prefactor and activation energies of these regimes are given in Table 1 . The values of D on the pristine graphene are also plotted in ( b ) showing a transition at about 75 K between two regimes of Brownian motion 7 8 .…”

Section: Figurementioning

confidence: 99%

“…Graphene is electrically and thermally conductive, chemically inert, and mechanically robust. Besides, the kinetic friction of physisorbed molecules on graphene is significantly low, which is desirable for efficient and high speed molecular transportation 7 8 9 . Hence, graphene-based materials are promising for constructing mass conveyer systems by applying a temperature gradient or external electric field 10 11 12 13 .…”

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confidence: 99%

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Molecular mobility on graphene nanoroads

Jafary-Zadeh

Zhang

2015

Sci Rep

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We study molecular mobility on a graphene nanoroad (GNRD), a pristine graphene strip embedded in between two hydrogenated graphene domains serving as a nanoscale pathway for transporting admolecules. Our molecular dynamics simulations using a prototype physisorbed C60 admolecule demonstrate that the proposed GNRD is able to confine the diffusive motion of the admolecule within the nanoroad up to a certain temperature, depending on its width and edge type. Within the confinement regime, the width and edge-type of the GNRD also play an important role in the molecular motion. Specifically, when the GNRD width is narrower than the admolecule diameter, the admolecule performs one-dimensional hopping motion along the nanoroad. When the GNRD width is larger than the admolecule diameter, the admolecule moves only along one of its edges at low temperatures, and shuffle between two edges at high temperatures. We further show the admolecule motion on the zigzag-edged GRND is faster than that on the armchair-edged GRND with the same width and at the same temperature. These results can be well explained by analysing the potential energy surfaces of the systems. Since such hydrogenated graphene nanostructures have been experimentally realized, our results provide a valuable reference for constructing molecular conveyor circuits.

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Section: Resultsmentioning

confidence: 72%

Section: Methods and Modelmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

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confidence: 99%

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Molecular mobility on graphene nanoroads

Jafary-Zadeh

Zhang

2015

Sci Rep

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“…LAMMPS 73 Large-scale atomic/molecular massively parallel simulator (LAMMPS) is one of the most commonly used classical MD and MC simulation scheme for studying friction and laws governing friction at the nanoscale. Jafary-Zadeh et al 94 used LAMMPS to study the effect of temperature on nanoscale kinetic friction for a C 60 particle under Brownian motion using AIREBO potential and recorded a decrease in the friction with increase in the temperature. Using the same potential, Jafary-Zadeh et al 95 used LAMMPS to study the transition of nanoscale kinetic friction with variation in type of motion.…”

Section: Methodsmentioning

confidence: 99%

Theoretical and computational studies on nanofriction: A review

Sankar

Kakkar

Dubey

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part J:

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The subject of nanofriction having its origins in the late 19th century has slowly but surely started picking up lately. With rapid advancements in science and technology throughout the last century, understanding nanofriction has been gaining prominence. In this context, and in the current 21st century of nanotechnology, it is expected that nanofriction will play a predominant role, as we try moving forward to solve the most pressing medical and biological problems with the usage of nanobots. It is important to understand the challenges we have to encounter in order to solve these problems for the benefit of the human race. The availability of high speed computers and smart algorithms has made it possible to investigate the problems (as outlined above and many more) without compromising on the complexities involved. The focus of the present review is to bring together major theoretical/mathematical models and computational approaches to study friction at nanoscale. The role of adhesion in the estimation of force of friction at nanoscale has also been clearly outlined. A critical discussion on the significance of single and multiple asperity models towards estimating friction at nanoscale has also been provided. At the end, a short description on scanning probe microscopy in estimating nanofriction has been provided for the completeness of the review.

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Treatment of oil-based drilling cuttings using the demulsification separation-Fenton oxidation method

Cai

Sun

et al. 2021

Environ Sci Pollut Res

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In this study, demulsification separation-Fenton oxidation technology was employed as a combined technology to treat total petroleum hydrocarbons (TPH) in oil-based drill cuttings (OBDC). Batch experiments were carried out to optimize the technology parameter. Under the optimal condition, 70% and 51% TPH removal rate was obtained for demulsification technology and Fenton oxidation technology, respectively. Eighty-five percent of TPH removal rate was obtained using combination technology of demulsification separation and Fenton oxidation. Multiple characterizations were used to analyze the physical and chemical properties of treated OBDC. The result of XRD pattern indicated the combination technology had no obvious effect for structure phase of OBDC. The results of FTIR, GC-MS, TG-DTG and SEM were used to characterize the treated OBDC. This paper provides an efficient and feasible combined technology for OBDC treatment, which expands a new strategy for the removal of TPH from solid waste

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Effect of temperature on kinetic nanofriction of a Brownian adparticle

Cited by 7 publications

References 46 publications

Molecular mobility on graphene nanoroads

Molecular mobility on graphene nanoroads

Theoretical and computational studies on nanofriction: A review

Treatment of oil-based drilling cuttings using the demulsification separation-Fenton oxidation method

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