Results 41 to 50 of about 179,800 (303)

Simulation of High-Power Klystrons with Heterogeneous Focusing Magnetic Field

open access: yesДоклады Белорусского государственного университета информатики и радиоэлектроники, 2022
The work shows a significant effect of the focusing magnetic field on the output characteristics of the klystron. When the calculations are done using nonlinear one-dimensional models, optimization of the parameters makes it possible to obtain versions ...
A. V. Aksenchyk, I. F. Kirynovich
doaj   +1 more source

High-sensitivity optical monitoring of a micro-mechanical resonator with a quantum-limited optomechanical sensor [PDF]

open access: yes, 2006
We experimentally demonstrate the high-sensitivity optical monitoring of a micro-mechanical resonator and its cooling by active control. Coating a low-loss mirror upon the resonator, we have built an optomechanical sensor based on a very high-finesse ...
A. Abramovici   +14 more
core   +3 more sources

Noise properties of two single electron transistors coupled by a nanomechanical resonator

open access: yes, 2005
We analyze the noise properties of two single electron transistors (SETs) coupled via a shared voltage gate consisting of a nanomechanical resonator. Working in the regime where the resonator can be treated as a classical system, we find that the SETs ...
A. D. Armour   +6 more
core   +1 more source

Resonances and resonance widths [PDF]

open access: yes, 1986
Two-dimensional betatron resonances are much more important than their simple one-dimensional counterparts and exhibit a strong dependence on the betatron phase advance per cell. A practical definition of ''width'' is expanded upon in order to display these relations in tables.
openaire   +2 more sources

Chemical Gas Sensor Based on a Flexible Capacitive Microwave Transducer Associated with a Sensitive Carbon Composite Polymer Film

open access: yesProceedings, 2017
This communication presents results on the feasibility of an inkjet printed chemical gas sensor suitable for a real time multi-sensing platform. The prototype targets volatile organic compounds (VOCs) such as ethanol vapor to monitor environmental ...
Prince Bahoumina   +13 more
doaj   +1 more source

Current noise of a superconducting single electron transistor coupled to a resonator

open access: yes, 2008
We analyze the current and zero-frequency current noise properties of a superconducting single electron resonator (SSET) coupled to a resonator, focusing on the regime where the SSET is operated in the vicinity of the Josephson quasiparticle resonance ...
A. D. Armour   +11 more
core   +1 more source

Highly Mass-Sensitive Thin Film Plate Acoustic Resonators (FPAR)

open access: yesSensors, 2011
The mass sensitivity of thin aluminum nitride (AlN) film S0 Lamb wave resonators is theoretically and experimentally studied. Theoretical predictions based on modal and finite elements method analysis are experimentally verified.
Ventsislav Yantchev   +6 more
doaj   +1 more source

Resonant Nucleation [PDF]

open access: yesPhysical Review Letters, 2005
We investigate the role played by fast quenching on the decay of metastable (or false vacuum) states. Instead of the exponentially-slow decay rate per unit volume, $ _{\rm HN} \sim \exp[-E_b/k_BT]$ ($E_b$ is the free energy of the critical bubble), predicted by Homogeneous Nucleation theory, we show that under fast enough quenching the decay rate is a
Gleiser, Marcelo, Howell, Rafael
openaire   +3 more sources

Utility of Computed Tomography Surveillance of Asymptomatic Infection in Children and Young Adults Before Allogeneic Hematopoietic Stem Cell Transplant

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Asymptomatic infection poses a significant risk for children undergoing hematopoietic stem cell transplantation (HSCT). Pre‐transplant surveillance computed tomography (CT) is commonly used to identify occult infection, though its diagnostic yield remains uncertain.
Tyler Obermark   +9 more
wiley   +1 more source

Analysis and Performance Improvement of WPT Systems in the Environment of Single Non-Ferromagnetic Metal Plates

open access: yesEnergies, 2016
Wireless power transfer (WPT) is greatly affected when the transmission channel is surrounded by non-ferromagnetic metallic objects and the alternating magnetic field interacts with the metal conductor, which is more of an issue in wirelessly charged ...
Linlin Tan   +5 more
doaj   +1 more source

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