Results 21 to 30 of about 1,438,237 (256)

Temperature coefficient of piezoelectric constants in Pb(Mg1/3 Nb2/3)O3 - PbTiO3 ceramics

open access: yesMaterials Research, 2004
In this work, the thermal stability of piezoelectric constants of PMN-PT ceramics in the tetragonal and rhombohedral phases were investigated in a wide range of temperatures.
Manuel Henrique Lente   +5 more
doaj   +1 more source

Uniform behavior of the electromechanical coupling factor in piezoelectric resonators

open access: yesMaterials Research Express, 2021
The coupling of mechanical and electrical energies in piezoelectric materials is a problem extensively studied by many researchers. A precise determination of this coupling is an essential aspect of the theory and performance evaluation of the ...
Orlando Rodríguez   +1 more
doaj   +1 more source

Design of a Low-Cost Microstrip Directional Coupler with High Coupling for a Motion Detection Sensor [PDF]

open access: yes, 2018
A coupled-line coupler based on the asymmetric cascade connection of two coupled line sections is used to achieve a high coupling factor using low-cost material and technology in the X frequency band, and its performance is compared with a standard ...
Casula, GIOVANNI ANDREA   +4 more
core   +2 more sources

Multi-factor risk analysis and early warning system of oil and gas accidents based on N–K coupling model [PDF]

open access: yesAIP Advances
Current research on oil and gas accidents generally has the problems of scattered risk factor identification, linear and static methods, and difficulty in modeling multi-factor nonlinear coupling and its dynamic evolution path.
Yao Hu   +3 more
doaj   +1 more source

Neural Membrane Mutual Coupling Characterisation Using Entropy-Based Iterative Learning Identification

open access: yesIEEE Access, 2020
This paper investigates the interaction phenomena of the coupled axons while the mutual coupling factor is presented as a pairwise description. Based on the Hodgkin-Huxley model and the coupling factor matrix, the membrane potentials of the coupled ...
Xiafei Tang   +3 more
doaj   +1 more source

Axial Vector Current and Coupling of the Quark in the Instanton Model [PDF]

open access: yes, 2002
We compute the axial vector current, form factor, and coupling for quarks in the instanton liquid model with two light flavors. Non-local current corrections are derived, as required by the effective 't Hooft interaction.
Carter, G. W.
core   +2 more sources

7.7-kW Inductive Coupling Three-Phase Coil Wireless Power Transfer Pads for Electric Vehicles Charging

open access: yesIEEE Access
Modern electric vehicle (EV) wireless charging systems (WCSs) rely heavily on Resonant Inductive Power Transfer (RIPT), which offers a flawless integration of safety, dependability, and automated functionality.
Mahesh Aganti   +3 more
doaj   +1 more source

Quantum dot-cavity strong-coupling regime measured through coherent reflection spectroscopy in a very high-Q micropillar

open access: yes, 2010
We report on the coherent reflection spectroscopy of a high-quality factor micropillar, in the strong coupling regime with a single InGaAs annealed quantum dot.
Krebs, Olivier   +6 more
core   +1 more source

Analysis and Design of a High-Coupling-Factor Marchand-Balun Variant Suitable for Standard Silicon IC Process and Its Wide-Band Gilbert Mixer Application

open access: yesIEEE Access
In this paper, a planar Marchand balun and its modification version are analyzed and designed on the standard lossy silicon substrate of $10~\Omega $ -cm resistivity.
Chinchun Meng   +3 more
doaj   +1 more source

Strong coupling of excitons in monolayer WS2 with guided-mode resonance

open access: yesResults in Physics, 2023
Strong photon-exciton coupling has garnered considerable interest due to its potential applications in quantum information processing, quantum light sources, and even quantum metrology. Here, we designed an “open cavity” consisting of monolayer WS2 and a
Qi Wu   +7 more
doaj   +1 more source

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