TITLE

Multilayer friction and attachment effects on energy dissipation in graphene nanoresonators

AUTHOR(S)
Sung Youb Kim; Park, Harold S.
PUB. DATE
March 2009
SOURCE
Applied Physics Letters;3/9/2009, Vol. 94 Issue 10, pN.PAG
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We utilize classical molecular dynamics to study the effects of intrinsic, interlayer friction between graphene monolayers, as well as extrinsic attachment or clamping strength between graphene and a model silicon substrate on the energy dissipation (Q-factors) of oscillating graphene nanoresonators. Both interlayer friction and attachment effects are found to significantly degrade the graphene Q-factors, with an increase in energy dissipation with increasing temperature, while both effects are found to be strongly dependent on the strength of the van der Waals interactions, either between adjacent layers of graphene or between graphene and the underlying substrate.
ACCESSION #
37043662

 

Related Articles

  • Electronic relaxation dynamics of Ni2+-ion aqueous solution: Molecular-dynamics simulation. Iuchi, Satoru; Morita, Akihiro; Kato, Shigeki // Journal of Chemical Physics;7/8/2005, Vol. 123 Issue 2, p024505 

    Electronic relaxation dynamics of Ni2+-ion aqueous solution is investigated using molecular-dynamics (MD) simulations with the model-effective Hamiltonian developed previously. The nonadiabatic transition rates from the first three excited states to the ground state are evaluated by the golden...

  • Molecular dynamics simulation of a Langmuir–Blodgett film. Moller, M. A.; Tildesley, D. J.; Kim, K. S.; Quirke, N. // Journal of Chemical Physics;6/15/1991, Vol. 94 Issue 12, p8390 

    The structure and dynamics of a Langmuir–Blodgett film of stearic acid, physisorbed on graphite, has been examined by a combination of energy minimization and molecular dynamics. The model predicts that the molecules of this system are normal to the surface at head group areas below 21...

  • Molecular simulation studies of nanoscale friction between phosphorylcholine self-assembled monolayer surfaces: Correlation between surface hydration and friction. Yi He; Shengfu Chen; Hower, Jason C.; Bernards, Matthew T.; Shaoyi Jiang // Journal of Chemical Physics;8/28/2007, Vol. 127 Issue 8, p084708 

    We performed all-atom molecular dynamics simulations to study the friction between surfaces covered with two phosphorylcholine self-assembled monolayers (PC-SAM) under shear. PC-SAM surfaces with a [Square_Root]7×[Square_Root]7R19° lattice structure and a parallel arrangement of the head...

  • Oscillations of the Faraday rotation in Co/Pd multilayer films. Iskhakov, R. S.; Moroz, Zh. M.; Édel’man, I. S.; Chekanova, L. A. // JETP Letters;5/10/96, Vol. 63 Issue 9, p770 

    We have discovered oscillations of the Faraday rotation as a function of the thickness of Pd layers in Co/Pd multilayer films. A correlation is traced between the behavior of the Faraday rotation as a function of the thickness of the Pd layers and the magnitude of the saturation field determined...

  • Magnetic friction due to vortex fluctuation. Dias, R. A.; Rapini, M.; Coura, P. Z.; Costa, B. V. // Journal of Applied Physics;3/15/2007, Vol. 101 Issue 6, p063915 

    We use Monte Carlo and molecular dynamics simulation to study a magnetic tip-sample interaction. Our interest is to understand the mechanism of heat dissipation when the forces involved in the system are magnetic in essence. We consider a magnetic crystalline substrate composed of several layers...

  • Molecular dynamics simulations of sliding friction of Langmuir–Blodgett monolayers. Koike, A.; Yoneya, M. // Journal of Chemical Physics;10/8/1996, Vol. 105 Issue 14, p6060 

    Molecular dynamics simulations have been used to study friction in Langmuir–Blodgett monolayers of perfluorocarboxylic acid and hydrocarboxylic acid on SiO2. The frictional force of perfluorocarboxylic acid is found to be about three times as large as that of hydrocarboxylic acid. The...

  • Modeling of complex biological systems. I. Molecular dynamics studies of diglyceride monolayers. Peters, Günther H.; Toxvaerd, S.; Svendsen, A.; Olsen, O. H. // Journal of Chemical Physics;4/15/1994, Vol. 100 Issue 8, p5996 

    Molecular dynamics simulations of diglyceride monolayers at the air–water interface have been performed to study the dynamical behavior of these Langmuir layers at surface densities varying from 36.2 to 40.5 Å2/molecule. The monolayers are treated in full atomic detail, with the...

  • Casimir friction force and energy dissipation for moving harmonic oscillators. II. Høye, J. S.; Brevik, I. // European Physical Journal D -- Atoms, Molecules, Clusters & Opti;Jan2011, Vol. 61 Issue 2, p335 

    This paper is a second in a series devoted to the study of a two-oscillator system in linear relative motion (the first one published as a letter in [J.S. Høye, I. Brevik, Europhys. Lett. 91, 60003 (2010)]). The main idea behind considering this kind of system is to use it as a simple model...

  • Extended Lagrangian Born–Oppenheimer molecular dynamics with dissipation. Niklasson, Anders M. N.; Steneteg, Peter; Odell, Anders; Bock, Nicolas; Challacombe, Matt; Tymczak, C. J.; Holmström, Erik; Zheng, Guishan; Weber, Valery // Journal of Chemical Physics;6/7/2009, Vol. 130 Issue 21, p214109 

    Stability and dissipation in the propagation of the electronic degrees of freedom in time-reversible extended Lagrangian Born–Oppenheimer molecular dynamics [Niklasson et al., Phys. Rev. Lett. 97, 123001 (2006); Phys. Rev. Lett. 100, 123004 (2008)] are analyzed. Because of the...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics