Results 61 to 70 of about 30,446 (313)

Velocity‐Tunable Exciton‐Photon Hybridization in Cathodoluminescence

Advanced Functional Materials, EarlyView.
Transition‐radiation resonances in suspended thin crystals hybridise with excitonic transitions under free‐electron excitation. By tuning the electron energy, the photonic resonances are continuously detuned across the exciton states, enabling controllable exciton–photon hybridisation below the diffraction limit without altering the system geometry ...
Sven Ebel, Martin Nørgaard, Christian Nicolaisen Hansen, N. Asger Mortensen, Sergii Morozov   +4 more
wiley   +1 more source

Nonlinear longitudinal/transversal modal interactions in highly extensible suspended cables [PDF]

, 2008
Recent research literature mostly deals with nonlinear resonant dynamics of low-extensible cables involving transversal modes. Herein, we aim to investigate geometrically nonlinear longitudinal/transversal modal interactions in highly extensible ...
REGA, GIUSEPPE, N. SRINIL, Rega, G., Srinil, N.   +3 more
core   +1 more source

Nonlinear Dynamics of a Nonlinear Damping Gyroscope and Its Passive Control

Journal of Control Science and Engineering, 2023
This article deals with the analysis of the effects of passive control on the complex dynamics of a nonlinear damping gyroscope. After modeling the gyroscope dynamics under the influence of the control force, using the harmonic balance method, the amplitudes of the harmonic oscillations are determined.
Semedeton Olivier Hounnan, Clément Hodévèwan Miwadinou, Adjimon Vincent Monwanou   +2 more
openaire   +2 more sources

Ultrawide Bandwidth Optomechanical Magnetometry Using Flux Concentration

Advanced Functional Materials, EarlyView.
High‐permeability flux concentrators enable ultrawide‐bandwidth chip‐scale optomechanical magnetometry by exploiting magnetic nonlinearity to up‐convert low‐frequency fields to the mechanical resonance, where sensitivity is optimal. This enables flat wideband operation over more than four orders of magnitude, from tens of kilohertz to sub‐hertz ...
Benjamin J. Carey, Nathaniel Bawden, Fernando Gottardo, James S. Bennett, Douglas Bulla, Scott Foster, Warwick P. Bowen   +6 more
wiley   +1 more source

The effect of cubic damping on a base excited isolator: an experimental study for harmonic excitation [PDF]

, 2013
An experimental study has been conducted to validate theoretical solutions for the response of a base excited single degree-of-freedom isolation system possessing pure cubic damping.
Ferguson, N.S., Waters, T.P., Panananda, N.   +2 more
core  

Stability of closed-loop fractional-order systems and definition of damping contours for the design of controllers [PDF]

, 2012
Fractional complex order integrator has been used since 1991 for the design of robust control-systems. In the CRONE control methodology, it permits the parameterization of open loop transfer function which is optimized in a robustness context.
Oustaloup, Alain, Pommier-Budinger, Valérie, Lanusse, Patrick   +2 more
core   +1 more source

Identification of Nonlinear Damping of Transverse Loop Oscillations by KHI-induced Turbulence

The Astrophysical Journal
Kink oscillations in coronal loops have been extensively studied for their potential contributions to coronal heating and their role in plasma diagnostics through coronal seismology. A key focus is the strong damping of large-amplitude kink oscillations,
Sihui Zhong, Andrew Hillier, Iñigo Arregui   +2 more
doaj   +1 more source

Global well-posedness analysis for the nonlinear extensible beam equations in a class of modified Woinowsky-Krieger models

Advanced Nonlinear Studies, 2022
For studying the evolution of the transverse deflection of an extensible beam derived from the connection mechanics, we investigate the initial boundary value problem of nonlinear extensible beam equation with linear strong damping term, nonlinear weak ...
Yang Chao, Rădulescu Vicenţiu D., Xu Runzhang, Zhang Mingyou   +3 more
doaj   +1 more source

Nonlinear-damping continuation of the nonlinear Schrödinger equation — A numerical study [PDF]

Physica D: Nonlinear Phenomena, 2012
We study the nonlinear-damping continuation of singular solutions of the critical and supercritical NLS. Our simulations suggest that for generic initial conditions that lead to collapse in the undamped NLS, the solution of the weakly-damped NLS $$ iψ_t(t,\X)+Δψ+|ψ|^{p-1}ψ+iδ|ψ|^{q-1}ψ=0 ...
Fibich, G., Klein, M.
openaire   +2 more sources

Giant Electrostriction in Halide Perovskites Revisited With Double‐Modulation Interferometry

Advanced Functional Materials, EarlyView.
A giant electrostrictive effect in lead halide perovskites had been reported previously. This work uses sensitive interferometry to measure the electromechanical response of various halide perovskite samples. The results reveal no intrinsic electrostrictive compression. Instead, the materials expand primarily under an applied electric field as a result
Philipp Ramming, Markus Griesbach, Ralf Moos, Lothar Kador, Anna Köhler   +4 more
wiley   +1 more source