Showing papers in "Physics Letters A in 2012"

TL;DR: In this paper, the fractional complex transform is suggested to convert a fractional differential equation with Jumarie's modification of Riemann-Liouville derivative into its classical differential partner.

TL;DR: In this article, the elastic constants and electronic structures of two-dimensional monolayer MoS 2 under elastic strain using the first-principles calculations were analyzed and the in-plane stiffness and Poisson ratio calculated in the harmonic elastic strain range were found to be 123 N/m and 0.25, indicating that monollayer MoS2 is much softer than graphene.

TL;DR: In this paper, the improved fractional sub-equation method is proposed to construct analytical solutions of nonlinear evolution equations involving Jumarie's modified Riemann-Liouville derivative.

TL;DR: In this article, the authors extended the plane wave expansion method to study the flexural wave propagation in locally resonant beams with multiple periodic arrays of attached spring-mass resonators.

TL;DR: The problem of constructing S- box is transformed to a Traveling Salesman Problem and a method for designing S-box based on chaos and genetic algorithm is proposed, which makes full use of the traits of chaotic map and evolution process.

TL;DR: In this paper, first principles theory calculations on the mechanical and electronic properties of silicene and silicane structure under uniaxial tensile strain along different directions are presented.

TL;DR: Results show during the evolution process, more contacted agents appear in scale-free networks than in regular lattices, and the degree based density of infected agents increases with the degree monotonously, but larger average network degree doesnʼt always mean less relaxation time.

TL;DR: This new model of computation, in which the connections between gates are programmed by the state of a quantum register, is shown to be more powerful than the usual quantum computation, e.g. in achieving the programmability of permutations of N different unitary channels with 1 use instead of N uses per channel.

TL;DR: The National 973 Program of China [2007CB209702, 2011CB935903] and National Natural Science Foundation of China as mentioned in this paper [11004165] have been used in the work of as mentioned in this paper.

TL;DR: In this article, the fractional derivatives in the sense of modified Riemann-Liouville derivative and the Backlund transformation of fractional Riccati equation are employed for constructing the exact solutions of nonlinear fractional partial differential equations.

TL;DR: In this article, an analytical approach for the fast calculation of sound transmission loss of the membrane-type acoustic metamaterials is presented, where the effects of membrane tension and mass position on the transmission loss and characteristic frequencies are also discussed in detail.

TL;DR: Using nonequilibrium molecular dynamics method (NEMD), this article found that the thermal conductivity of multilayer graphene nanoribbons monotonously decreases with the increase of the number of layers which can be attributed to the phonon resonance effect of out-of-plane phonon modes.

TL;DR: In this article, the thermal conductivity of defective graphene was investigated by using non-equilibrium molecular dynamics simulations and it was found that various defects including single vacancy, double vacancy and Stone-Wales defects can greatly reduce the thermal performance of graphene.

TL;DR: In this article, the effect of a non-resonant intense laser field on the optical rectification and second and third harmonic generation in a Poschl-Teller quantum well is theoretically investigated.

TL;DR: In this paper, a memristor-based Chua's system is presented, and the chaotic behavior of this system is demonstrated by phase portraits, where the sufficient condition for the adaptive synchronization has been analyzed.

TL;DR: In this article, the propagation properties of flexural wave in the periodic beam on elastic foundations are studied theoretically and a gap with low frequency and wide range can exist in a beam with elastic foundations.

TL;DR: In this paper, the lowest order rogue wave solution of the Sasa-Satsuma equation (SSE) is presented, which is one of the integrable extensions of the nonlinear Schrodinger equation (NLSE).

TL;DR: In this article, a generalized fractional sub-equation method is proposed for solving fractional differential equations with variable coefficients, which provides a very effective, convenient and powerful mathematical tool for solving many other fractional equations in mathematical physics.

TL;DR: In this article, a geometric method for identifying the coupling direction between two dynamical systems based on a bivariate extension of recurrence network analysis is introduced. But the method is limited to K > 2 coupled subsystems.

TL;DR: In this article, a new lattice model of traffic flow is presented by taking into account the anticipation of potential lane changing on front site on single lane, and the stability condition of the extended model is obtained by using the linear stability theory.

TL;DR: In this article, the spontaneous emission of a dipole emitter imbedded into a layered metal-dielectric metamaterial was studied, and it was shown that the traditional effective medium approach greatly underestimates the value of the Purcell factor due to the presence of an effective nonlocality.

TL;DR: In this article, a thermodynamic theory of gases with the energy transfer from molecular translational mode to internal modes as an extension of Meixner's theory was studied, focusing on the simplest case with only one dissipative process due to the dynamic pressure.

TL;DR: In this article, the possibility of NO-sensing on carbon nanocones (CNCs) has been investigated using density functional theory, and it has been found that the NO molecule is physically adsorbed on the pristine CNC-60 (with disclination angle of 60°) with adsorption energies in the range of −0.64 to − 0.80 kcal / mol.

TL;DR: In this paper, the effects of doped nitrogen atoms and point vacancies concentrations on the Young's modulus and tensile strength of graphene were investigated by performing uniaxial tension simulations.

TL;DR: In this paper, a memcapacitor emulator is proposed based on the theory proposed by L.O. Chua, which can be realized by transforming a memristor emulator to a memapacitor simulator.

TL;DR: In this paper, the authors studied the time evolution of the quantum Fisher information of a system whose the dynamics is described by the phase-damped model and discussed the correlation between the Fisher information and entanglement dynamics of a qubit and single-mode quantized field in a coherent state inside a cavity.

TL;DR: Open quantum walks (OQW) are formulated as quantum Markov chains on graphs as discussed by the authors, and they are a very useful tool for the formulation of dissipative quantum computing algorithms and for dissipative Quantum state preparation.

TL;DR: In this article, a two-dimensional, membrane-based acoustic metamaterial with a near-zero refractive index was studied. And the phase in this metammaterial undergoes small changes, and the metam material functions as an angular filter such that only a wave with a small incident angle can transmit.

TL;DR: In this article, the authors considered the effect of the wind and the dissipation on the nonlinear stages of the modulational instability and applied a suitable transformation to map the forced/damped nonlinear Schrodinger (NLS) equation into the standard NLS with constant coefficients.