Results 41 to 50 of about 502,308 (345)

Statics and dynamics of a harmonic oscillator coupled to a one-dimensional Ising system

open access: yes, 2011
We investigate an oscillator linearly coupled with a one-dimensional Ising system. The coupling gives rise to drastic changes both in the oscillator statics and dynamics.
Bonilla, L. L., Carpio, A., Prados, A.
core   +1 more source

Photothermocapillary Oscillators

open access: yesPhysical Review Letters, 2018
We present a new class of tunable light-driven oscillators based on mm-scale objects adsorbed at fluid interfaces. A fixed light source induces photothermal surface tension gradients (Marangoni stresses) that drive nanocomposite hydrogel discs away from a stable apex position atop a drop of water.
Hauser, Adam W.   +2 more
openaire   +4 more sources

Celebration of the centenary of a major scientific milestone thanks to Heinrich Barkhausen

open access: yesInternational Journal for Simulation and Multidisciplinary Design Optimization, 2020
Brief history of a perfect optimization with the oscillation condition and microwave tube as well as contributions to oscillators at the occasion of the centenary of a great step forward thanks to genius Heinrich Barkhausen with his pages of glory in the
Salzenstein Patrice   +1 more
doaj   +1 more source

Three-Dimensional, Time-Dependent Analysis of High- and Low-Q Free-Electron Laser Oscillators

open access: yesApplied Sciences, 2021
Free-electron lasers (FELs) have been designed to operate over virtually the entire electromagnetic spectrum, from microwaves through to X-rays, and in a variety of configurations, including amplifiers and oscillators. Oscillators can operate in both the
Peter J. M. van der Slot   +1 more
doaj   +1 more source

Noise spectrum of a tunnel junction coupled to a nanomechanical oscillator

open access: yes, 2007
A nanomechanical resonator coupled to a tunnel junction is studied. The oscillator modulates the transmission of the junction, changing the current and the noise spectrum.
Rammer, J., Shelankov, A. L., Wabnig, J.
core   +1 more source

SYNCHRONOUS OSCILLATIONS IN VAN DER POL GENERATOR WITH MODULATED NATURAL FREQUENCY

open access: yesRadio Physics and Radio Astronomy, 2015
The synchronous operation of Van Der Pole generator with the low-frequency modulated natural frequency has been investigated. The presence of low-frequency modulation is shown to lead to formation of additional synchronization regions.
A. Yu. Nimets, D. M. Vavriv
doaj   +1 more source

Demonstration of Three True Random Number Generator Circuits Using Memristor Created Entropy and Commercial Off-the-Shelf Components

open access: yesEntropy, 2021
In this work, we build and test three memristor-based true random number generator (TRNG) circuits: two previously presented in the literature and one which is our own design.
Scott Stoller, Kristy A. Campbell
doaj   +1 more source

Full counting statistics and conditional evolution in a nanoelectromechanical system

open access: yes, 2008
We study theoretically the full distribution of transferred charge in a tunnel junction (or quantum point contact) coupled to a nanomechanical oscillator, as well as the conditional evolution of the oscillator.
Bennett, S. D., Clerk, A. A.
core   +1 more source

TERAHERTZ CLYNOOROTRON WITH AN AZIMUTHAL COMB [PDF]

open access: yesРадиофизика и электроника, 2017
The results of theoretical and experimental studies of oro-trons – oscillators of diffraction radiation with spatially developed electrodynamic systems, electromagnetic oscillations in which are excited, as a rule, by nonrelativistic spatially developed ...
V. D. Yeryomka   +3 more
doaj   +1 more source

Gravity-Compensation Design Approaches for Flexure-Pivot Time Bases

open access: yesMachines, 2022
While flexure time bases have gained significant traction in the watchmaking industry thanks to their high quality factor and monolithic design, maintaining a stable frequency in varying orientations of wrist watches with respect to gravity remains a ...
Etienne Thalmann   +2 more
doaj   +1 more source

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