Results 51 to 60 of about 285,497 (312)
OSCILLATING FILAMENTS. I. OSCILLATION AND GEOMETRICAL FRAGMENTATION [PDF]
The Astrophysical Journal, 2017 ABSTRACT We study the stability of filaments in equilibrium between gravity and internal as well as external pressure using the grid-based AMR code RAMSES. A homogeneous, straight cylinder below a critical line mass is marginally stable. However, if the cylinder is bent, such as with a slight sinusoidal perturbation, an otherwise stable ...
Matthias Gritschneder +2 more
openaire +3 more sources
The simplest approach to nonlinear oscillators
Results in Physics, 2019 This paper gives the simplest approach to the cubic-quintic Duffing equation (M.S.H. Chowdhury et al., Results in Physics 7(2017): 3962–3967), providing an extremely fast and relatively accurate estimation of the frequency of a nonlinear conservative ...
Ji-Huan He
semanticscholar +1 more source
Stability Conditions for Cluster Synchronization in Networks of Heterogeneous Kuramoto Oscillators [PDF]
IEEE Transactions on Control of Network Systems, 2018 In this paper, we study cluster synchronization in networks of oscillators with heterogenous Kuramoto dynamics, where multiple groups of oscillators with identical phases coexist in a connected network.
Tommaso Menara +3 more
semanticscholar +1 more source
Simplified Chua's attractor via bridging a diode pair
The Journal of Engineering, 2015 In this paper, a simplified Chua's circuit is realised by bridging a diode pair between a passive LC (inductance and capacitance in parallel connection - LC) oscillator and an active RC (resistance and capacitance in parallel connection - RC) filter. The
Quan Xu, Bo-Cheng Bao
doaj +1 more source
Network dynamics of coupled oscillators and phase reduction techniques
Physics reports, 2019 Investigating the dynamics of a network of oscillatory systems is a timely and urgent topic. Phase synchronization has proven paradigmatic to study emergent collective behavior within a network. Defining the phase dynamics, however, is not a trivial task.
Bastian Pietras, A. Daffertshofer
semanticscholar +1 more source
Advanced Functional Materials, EarlyView.An original method is presented for producing artificial spider silk fibers with magnetic and magnetomechanical responsiveness, which consists in coating them with a nanometer‐thick layer of FeCo alloy by sputtering deposition. The challenge of combining organic materials and inorganic magnetic nanostructures is addressed, thus taking a step forward ...
Filippo Lanaro +5 more
wiley +1 more source
Phase reduction approach to synchronisation of nonlinear oscillators [PDF]
, 2016 Systems of dynamical elements exhibiting spontaneous rhythms are found in various fields of science and engineering, including physics, chemistry, biology, physiology, and mechanical and electrical engineering.
H. Nakao
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Advanced Functional Materials, EarlyView.Significant nanoscale oxygen diffusion coefficient variations are measured in ferroelectric hafnium zirconium oxide films with grain boundaries and electrode interfaces exhibiting values 104 times larger than the grain cores. Overall coefficients are 10X larger for films prepared with metal nitride electrodes compared to refractory metals. New insights
Liron Shvilberg +6 more
wiley +1 more source
Photo-Detectors Integrated with Resonant Tunneling Diodes
Sensors, 2013 We report on photo-detectors consisting of an optical waveguide that incorporates a resonant tunneling diode (RTD). Operating at wavelengths around 1.55 μm in the optical communications C band we achieve maximum sensitivities of around 0.29 A/W which is ...
José M. L. Figueiredo +4 more
doaj +1 more source
Quantum Synchronization Blockade: Energy Quantization Hinders Synchronization of Identical Oscillators. [PDF]
Physical Review Letters, 2017 Classically, the tendency towards spontaneous synchronization is strongest if the natural frequencies of the self-oscillators are as close as possible. We show that this wisdom fails in the deep quantum regime, where the uncertainty of amplitude narrows ...
N. Lörch +4 more
semanticscholar +1 more source