Efficient finite element modeling of acoustic radiation forces on inhomogeneous elastic particles
Puja Mishra, Peter Glynne-Jones, Rosemary J. Boltryk, and Martyn Hill
An efficient and flexible numerical model is developed to investigate acoustic radiation forces on a particle of arbitrary size, shape, elasticity, composition and material characteristics. The model compares well with analytical solutions and has suggested useful results on shape dependency, and th ... [AIP Conf. Proc. 1433, 753 (2012)] published Thu May 24, 2012.
Development of tough anti cavitation hydrophone by deposition of hydrothermally synthesized lead zirconate titanate poly-crystalline film on reverse surface of titanium front layer
Shinichi Takeuchi, Mutsuo Ishikawa, Norimichi Kawashima, Takeyoshi Uchida, Masahiro Yoshioka et al.
It is difficult to measure the high intensity ultrasound field with generation of acoustic cavitaion, since the electrode of hydrophone will be damaged by erosion and acoustic cavitation. Therefore, we developed the original miniature hydrophone by using hydrothermally synthesized lead zirconate tit ... [AIP Conf. Proc. 1433, 663 (2012)] published Thu May 24, 2012.
Influence of different boundary conditions on modulating inlet pressure and velocity of regenerator
Lihua Zhou, Xiujuan Xie, and Qing Li
In present paper, a model driven by double loudspeakers is proposed, which can widely modulate acoustic pressure and oscillating velocity at the inlet boundary of regenerator. For the sake of contrastive analysis, other two models driven by single loudspeaker are built up. Based on linear thermoacou ... [AIP Conf. Proc. 1433, 605 (2012)] published Thu May 24, 2012.
Characteristics of stereo reproduction with parametric loudspeakers
Shigeaki Aoki, Masayoshi Toba, and Norihisa Tsujita
A parametric loudspeaker utilizes nonlinearity of a medium and is known as a super-directivity loudspeaker. The parametric loudspeaker is one of the prominent applications of nonlinear ultrasonics. So far, the applications have been limited monaural reproduction sound system for public address in mu ... [AIP Conf. Proc. 1433, 47 (2012)] published Thu May 24, 2012.
FEM simulation of SAW reflection in crystals
A.N. Darinskii, M. Weihnacht, and H. Schmidt
The paper discusses the numerical study of the SAW reflection from single surface imperfections, such as grooves, projections, and steps, on half-infinite piezoelectric substrates. Our analysis is based on FEM computations. A perfectly matched layer (PML) is implemented in order to truncate the comp ... [AIP Conf. Proc. 1433, 251 (2012)] published Thu May 24, 2012.
Application of nonlinear acoustics for the study of relaxation processes in granular materials
V. Yu. Zaitsev, V. Gusev, and V. Tournat
We report observations of slow relaxation of the weak-contact network in a dry granular packing after gentle taps. Non-conventional nonlinear acoustic technique is used. Its high sensitivity makes it possible to monitor in detail the restoration of the weak-contact network. With a high precision, it ... [AIP Conf. Proc. 1433, 151 (2012)] published Thu May 24, 2012.
A numerical study of carrier impact ionization in AlGaN
Enrico Bellotti and Francesco Bertazzi
Using a full-band Monte Carlo model we have computed the carrier impact ionization coefficients in AlGaN for seven alloy compositions between x = 0 (GaN) and x = 1.0 (AlN). We have found that holes dominate the impact ionization process for compositions below 50%, while electrons dominate for larger ... [J. Appl. Phys. 111, 103711 (2012)] published Thu May 24, 2012.
Resistive switching properties of amorphous PrCaMnO films grown on indium tin oxide/glass substrate using pulsed laser deposition method
Tae-Geun Seong, Kyu Bum Choi, In-Tae Seo, Joon-Ho Oh, Ji Won Moon et al.
Amorphous PrCaMnO (APCMO) films, which were grown on indium tin oxide (ITO)/glass at room temperature (RT), were n-type materials. The APCMO/ITO/glass device exhibited an average transparency of 77% in the visible range with a maximum transparency of 84% at a wavelength of 530 nm. The Pt/APCMO/ITO d ... [Appl. Phys. Lett. 100, 212111 (2012)] published Thu May 24, 2012.
An energy investigation of reaction diffusion equations
P. Sitompul, H. Gunawan, Y. Soeharyadi, and A. Y. Gunawan
The behavior of energy E(t) is studied for a class of reaction diffusion equation [dformula u[sub t] = f(u) + epsilon Delta u;] here epsilon > 0. The asymptotic behavior of the energy is of particular interest to indicate singularity formation in the solution in the long run. While for sufficientl ... [AIP Conf. Proc. 1450, 363 (2012)] published Wed May 23, 2012.
Trajectory following method on output tracking of non-linear non-minimum phase systems
Karunia Putra Wijaya, Ikha Magdalena, and Janson Naiborhu
Based on gradient descent control, a new nonlinear dynamic controller for nonlinear non-minimum phase systems is described in this paper. Performance index is generated by error of output system from output desired value and internal state of the system. Adding of internal state to generate performa ... [AIP Conf. Proc. 1450, 142 (2012)] published Wed May 23, 2012.
Bosonic Loop Diagrams as Perturbative Solutions of the Classical Field Equations in phi-Theory
Felix Finster and Jurgen Tolksdorf
Solutions of the classical phi-theory in Minkowski space-time are analyzed in a perturbation expansion in the nonlinearity. Using the language of Feynman diagrams, the solution of the Cauchy problem is expressed in terms of tree diagrams which involve the retarded Green's function and have one outgo ... [J. Math. Phys. 53, 052305 (2012)] published Wed May 23, 2012.
Evaluation of the physical annealing strategy for simulated annealing: A function-based analysis in the landscape paradigm
M. Hasegawa
The effectiveness of the actual annealing strategy in finite-time optimization by simulated annealing (SA) is analyzed by focusing on the search function of the relaxation dynamics observed in the multimodal landscape of the cost function. The rate-cycling experiment, which was introduced in the pre ... [Phys. Rev. E 85, 056704 ] published .
Explicit solutions from eigenfunction symmetry of the Kortewegde Vries equation
Xiao-Rui Hu, Sen-Yue Lou, and Yong Chen
In nonlinear science, it is very difficult to find exact interaction solutions among solitons and other kinds of complicated waves such as cnoidal waves and Painleve waves. Actually, even if for the most well-known prototypical models such as the Kortewetde Vries (KdV) equation and the Kadomtsev-Pet ... [Phys. Rev. E 85, 056607 ] published .
Two-dimensional Born-Infeld gauge theory: Spectrum, string picture, and large-N phase transition
Alexios P. Polychronakos
We analyze U(N) Born-Infeld gauge theory in two spacetime dimensions. We derive the exact energy spectrum on the circle and show that it reduces to N relativistic fermions on a dual space. This contrasts to the Yang-Mills case that reduces to nonrelativistic fermions. The theory admits a string theo ... [Phys. Rev. D 85, 105024 ] published .
Derivation of a coupled system of Kortewegde Vries equations describing ultrashort soliton propagation in quadratic media by using a general Hamiltonian for multilevel atoms
Herve Leblond, Houria Triki, and Dumitru Mihalache
We consider the propagation of ultrashort solitons in noncentrosymmetric quadratically nonlinear optical media described by a general Hamiltonian of multilevel atoms. We use a long-wave approximation to derive a coupled system of Kortewegde Vries equations describing ultrashort soliton evolution in ... [Phys. Rev. A 85, 053826 ] published .
Emission spectrum of the driven nonlinear oscillator
Stephan Andre, Lingzhen Guo, Vittorio Peano, Michael Marthaler, and Gerd Schon
Motivated by recent circuit QED experiments we investigate the noise properties of coherently driven nonlinear resonators. By using Josephson junctions in superconducting circuits, strong nonlinearities can be engineered, which lead to the appearance of pronounced effects already for a low number of ... [Phys. Rev. A 85, 053825 ] published .
Effect of precipitate-dislocation interactions on generation of nonlinear Lamb waves in creep-damaged metallic alloys
Yanxun Xiang, Mingxi Deng, Fu-Zhen Xuan, and Chang-Jun Liu
An analytical model is presented for the effect of the interactions of dislocations with precipitate coherency strains on the generation of second-harmonic of Lamb waves in metallic alloys. The cumulative second-harmonic of Lamb wave propagation is shown to depend dominantly on the dislocation densi ... [J. Appl. Phys. 111, 104905 (2012)] published Tue May 22, 2012.
Stress Wave Anisotropy in Centered Square Highly Nonlinear Granular Systems
A. Leonard and C. Daraio
Highly ordered, close packed granular systems present a nonlinear dynamic behavior stemming from the Hertzian contact interaction between particles. We investigated the propagation of elastic stress waves in an uncompressed, centered square array of spherical and cylindrical particles. We show, via ... [Phys. Rev. Lett. 108, 214301 ] published .
Direct Generation of Polarization-Entangled Photon Pairs in a Poled Fiber
Eric Y. Zhu, Zhiyuan Tang, Li Qian, Lukas G. Helt, Marco Liscidini et al.
We experimentally demonstrate the direct generation of polarization-entangled photon pairs in an optical fiber at room temperature by exploiting type-II phase-matched spontaneous parametric down-conversion. A second-order nonlinearity is artificially induced in the 17-cm-long weakly birefringent ste ... [Phys. Rev. Lett. 108, 213902 ] published .
Cooling in the single-photon strong-coupling regime of cavity optomechanics
A. Nunnenkamp, K. Borkje, and S. M. Girvin
In this Rapid Communication we discuss how red-sideband cooling is modified in the single-photon strong-coupling regime of cavity optomechanics where the radiation pressure of a single photon displaces the mechanical oscillator by more than its zero-point uncertainty. Using Fermi's golden rule we ca ... [Phys. Rev. A 85, 051803 ] published .
Double Alfven waves
G. M. Webb, Q. Hu, J. A. le Roux, B. Dasgupta, and G. P. Zank
We present ideas on nonlinear multiple waves in magnetohydrodynamics (MHD). In simple wave solutions, the dependent physical variables (the gas density, fluid velocity, magnetic field induction and gas pressure) depend on one phase variable which can be a function of the space and time variables (x, ... [AIP Conf. Proc. 1436, 74 (2012)] published Mon May 21, 2012.
Localized modulation of rotating waves in Taylor-Couette flow
J. Abshagen, J. von Stamm, M. Heise, Ch. Will, and G. Pfister
We report the results of an experimental study on the multiplicity of states in Taylor-Couette flow as a result of axial localization of azimuthally rotating waves. Localized states have been found to appear hysteretically from time-dependent Taylor-Couette flow at Reynolds numbers significantly abo ... [Phys. Rev. E 85, 056307 ] published .
Normal and anomalous diffusion in random potential landscapes
F. Camboni and I. M. Sokolov
A relation between the effective diffusion coefficient in a lattice with random site energies and random transition rates and the macroscopic conductivity in a random resistor network allows for elucidating possible sources of anomalous diffusion in random potential models. We show that subdiffusion ... [Phys. Rev. E 85, 050104 ] published .
Quasi-phase-matching of high-order-harmonic generation using polarization beating in optical waveguides
Lewis Z. Liu, Kevin O'Keeffe, and Simon M. Hooker
A scheme for quasi-phase-matching high-harmonic generation is proposed in which polarization beating within a hollow core birefringent waveguide modulates the generation of harmonics. The evolution of the polarization of a laser pulse propagating in a birefringent waveguide is calculated and is show ... [Phys. Rev. A 85, 053823 ] published .
Two-component solitons with a spatially modulated linear coupling: Inverted photonic crystals and fused couplers
Yongyao Li, Wei Pang, Shenhe Fu, and Boris A. Malomed
We study two-component solitons and their symmetry-breaking bifurcations (SBBs) in linearly coupled photonic systems with a spatially inhomogeneous strength of the coupling. One system models an inverted virtual photonic crystal, built by periodically doping the host medium with atoms implementing t ... [Phys. Rev. A 85, 053821 ] published .
Dielectric properties and electrical conduction of high-k LaGdO ceramics
S. P. Pavunny, R. Thomas, A. Kumar, N. M. Murari, and R. S. Katiyar
The temperature and frequency dependent dielectric properties and leakage conduction mechanism in LaGdO (LGO) ceramics have been studied, and this material has been identified as a potential high-k candidate for the future complementary metal-oxide-semiconductor (CMOS) and dynamic random access memo ... [J. Appl. Phys. 111, 102811 (2012)] published Fri May 18, 2012.
Motions of Curves in the Projective Plane Inducing the Kaup-Kupershmidt Hierarchy. (arXiv:1205.5329v1 [math.DG])
ePrint arXiv http://arXiv.org/
Families of piecewise linear maps with constant Lyapunov exponent. (arXiv:1205.5360v1 [nlin.CD])
ePrint arXiv http://arXiv.org/
On peaked solitary waves of Degasperis - Procesi equation. (arXiv:1205.5396v1 [nlin.SI])
ePrint arXiv http://arXiv.org/
Corrigendum to "Linear response formula for piecewise expanding unimodal maps," Nonlinearity, 21 (2008) 677-711. (arXiv:1205.5468v1 [math.DS])
ePrint arXiv http://arXiv.org/
Malthusian assumptions, Boserupian response in models of the transitions to agriculture. (arXiv:1108.2585v2 [q-bio.PE] UPDATED)
ePrint arXiv http://arXiv.org/
Spatiotemporal dynamics of quantum jumps with Rydberg atoms. (arXiv:1202.1508v2 [quant-ph] UPDATED)
ePrint arXiv http://arXiv.org/
Yang-Baxter maps and finite reduction groups with degenerated orbits. (arXiv:1205.4910v1 [math-ph] CROSS LISTED)
ePrint arXiv http://arXiv.org/