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Effects of noise on the internal resonance of a nonlinear oscillator
(Nature Publishing Group, 2018-12)
We numerically analyze the response to noise of a system formed by two coupled mechanical oscillators, one of them having Duffing and van der Pol nonlinearities, and being excited by a self-sustaining force proportional ...
Friedel oscillations in a Luttinger liquid with long-range interactions
(American Physical Society, 2001-06)
We introduce a path-integral approach that allows us to compute charge-density oscillations in a Luttinger liquid with impurities. We obtain an explicit expression for the envelope of Friedel oscillations in the presence ...
Internal resonance in a vibrating beam: A zoo of nonlinear resonance peaks
(Public Library of Science, 2016-09-20)
In oscillating mechanical systems, nonlinearity is responsible for the departure from proportionality between the forces that sustain their motion and the resulting vibration amplitude. Such effect may have both beneficial ...
Harmonic distortion analysis based on Hopf bifurcation theorem and fast fourier transform
(World Scientific, 2007-12)
A frequency domain method is used to estimate the harmonic contents of a smooth oscillation arising from the Hopf bifurcation mechanism. The harmonic contents up to the eighth-order are well estimated, which agree with the ...
Interaction of charged particles with a graphene monolayer modeled as a set of electronic oscillators
(American Institute of Physics, 2021-08)
We assess the applicability of the oscillator model to evaluate the energy loss of a fast charged particle incident on graphene. We study the cases of a parallel and perpendicular trajectory of the particle. We focus on ...
Comparative studies of the nonlinear effects occurring when highly charged projectiles collide with hydrogen, a free electron gas, and a harmonic oscillator
(American Physical Society, 2005-12)
We calculate the nonlinear effects that appear at the level of the stopping cross section when heavy bare projectiles collide with both atomic hydrogen and a free electron gas. Calculations are carried out by using ...
Electrical current nanogeneration driven by spontaneous nanofluidic oscillations
(Royal Society of Chemistry, 2018-02)
Exploiting natural phenomena is a central route for providing electricity to sustainably drive wearable electronics. Here we report a nano-scale water-driven energy generator that produces tiny electrical currents from ...
Oscillator model approximation applied to 2D materials: Energy loss of relativistic charged particles
(Elsevier Science, 2021-03)
In this work we present a fully relativistic formulation for the energy loss of an external charged particle interacting with a 2D material. We model this material as a monolayer of atoms represented by harmonic oscillators, ...
Oscillator model applied to 2D materials: Energy loss of relativistic charged particles
(Elsevier Science, 2021-03)
In this work we present a fully relativistic formulation for the energy loss of an external charged particle interacting with a 2D material. We model this material as a monolayer of atoms represented by harmonic oscillators, ...
Interference oscillations in the angular distribution of laser-ionized electrons near ionization threshold
(American Physical Society, 2006-04)
We analyze the two-dimensional momentum distribution of electrons ionized by few-cycle laser pulses in the transition regime from multiphoton absorption to tunneling by solving the time-dependent Schro¨dinger equation and ...