Results 41 to 50 of about 412,404 (295)

Super-Radiance and the Unstable Photon Oscillator

, 2000
If the damping of a simple harmonic oscillator from a thermally random force is sufficiently strong, then the oscillator may become unstable. For a photon oscillator (radiatively damped by electric dipole moments), the instability leads to a low ...
A. WIDOM, Dzyaloshinski I. E., Dzyaloshinski I. E., Dzyaloshinski I. E., S. SIVASUBRAMANIAN, Y. N. SRIVASTAVA   +5 more
core   +1 more source

Noise spectrum of a tunnel junction coupled to a nanomechanical oscillator

, 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

Driven harmonic oscillator as a quantum simulator for open systems [PDF]

, 2006
We show theoretically how a driven harmonic oscillator can be used as a quantum simulator for non-Markovian damped harmonic oscillator. In the general framework, the results demonstrate the possibility to use a closed system as a simulator for open ...
C. W. Gardiner, H.-P. Breuer, Jyrki Piilo, L. Mandel, M. A. Nielsen, S. M. Barnett, S. Stenholm, Sabrina Maniscalco, U. Weiss   +8 more
core   +2 more sources

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

Applied 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, Henry P. Freund   +1 more
doaj   +1 more source

A Capacitive Pressure Sensor Interface IC with Wireless Power and Data Transfer

Micromachines, 2020
This paper presents a capacitive pressure sensor interface circuit design in 180 nm XH018 CMOS technology for an implantable capacitive pressure sensor, which has a wireless power supply and wireless data transfer function.
Chaoping Zhang, Robert Gallichan, David M. Budgett, Daniel McCormick   +3 more
doaj   +1 more source

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

Entropy, 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

Time-dependent quantum transport in a resonant tunnel junction coupled to a nanomechanical oscillator

, 2010
We present a theoretical study of time-dependent quantum transport in a resonant tunnel junction coupled to a nanomechanical oscillator within the non-equilibrium Green's function technique.
A. MacKinnon, A. N. Cleland, H. Huagand, I. S. Gradshteyn, I. S. Gradshteyn, L. V. Keldysh, L. V. Keldysh, M. Tahir   +7 more
core   +1 more source

Unitary relations in time-dependent harmonic oscillators [PDF]

, 1999
For a harmonic oscillator with time-dependent (positive) mass and frequency, an unitary operator is shown to transform the quantum states of the system to those of a harmonic oscillator system of unit mass and time-dependent frequency, as well as ...
Caldirola P, Colegrave R K, Colegrave R K, Dae-Yup Song, Ermakov V, Feynman R P, Haar D T, Hasse R W, Husimi K, Kanai E, Kerner E H, Leach P G L, Leach P G L, Lee M-H, Lewis H R, Lewis H R, Li F-l, Maamache M, Mostafazadeh A   +18 more
core   +2 more sources

Multifunctional Crushing and Piezoresistive Self‐Sensing in Conductive Epoxy/CNT‐Coated Polyetherimide TPMS Lattices

Advanced Engineering Materials, EarlyView.
This study reports lightweight polyetherimide triply periodic minimal surfaces lattices coated with carbon nanotube‐reinforced epoxy that combine mechanical robustness with self‐sensing. The conformal coating enhances stiffness, strength and energy absorption while enabling reliable strain monitoring.
A. Triay, J. Schneider, P. Harrison, S. Kumar   +3 more
wiley   +1 more source

TERAHERTZ CLYNOOROTRON WITH AN AZIMUTHAL COMB [PDF]

Радиофизика 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, A. A. Kurayev, V. V. Matveenko, A. K. Sinitsyn   +3 more
doaj   +1 more source