Results 11 to 20 of about 221,369 (265)
Sensors, 2015 Electromagnetic acoustic transducers (EMATs) can generate non-dispersive T(0,1) mode guided waves in a metallic pipe for nondestructive testing (NDT) by using a periodic permanent magnet (PPM) EMAT circular array.
Xinjun Wu, Pengfei Sun, Wu Xinjun
exaly +3 more sources
Sensors, 2014 The non-contact magnetostrictive sensor (MsS) has been widely used in the guided wave testing of pipes, cables, and so on. However, it has a disadvantage of low excitation efficiency.
Pengfei Sun, Xinjun Wu, Jiang Xu
exaly +3 more sources
Mode excitation efficiency for contour vibrations of piezoelectric resonators
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2011 This paper addresses a theoretical procedure for control of the contour mode excitation efficiency in thin piezoelectric arbitrarily-shaped resonators by adjusting the surface electrode configuration to the mechanical stress distribution. The procedure allows accurate determination of at least five efficiently excited modes for various electrode ...
Anastasiia O Krushynska +2 more
exaly +4 more sources
THE TE₀₁ WAVE EXCITATION IN A CIRCULAR WAVEGUIDE USING HIGHER-ORDER MODES OF AN OPEN RESONATOR [PDF]
Radio Physics and Radio Astronomy, 2023 Subject and Purpose. Peculiarities of the TE₀₁ wave excitation in a circular waveguide located in the center of the flat mirror of a hemispherical open resonator (OR) are studied using the OR oscillation type TEМ₃₀q and the OR degenerate oscillation type
I. K. Kuzmichov +4 more
doaj +1 more source
Solar-Terrestrial Physics, 2022 We have studied the influence of the precipitating electron spectrum shape on the integral intensity of emissions λ391.4 nm 1NG N⁺₂, λ670.4 mn 1PG N₂, λ337.1 nm 2PG N₂, λ320.0 nm VK N₂, λ127.3 nm LBH N₂, atomic oxygen emissions λ557.7 and λ630.0 nm ...
Dashkevich Z. V., Ivanov V. E.
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Efficient Spin-Flip Excitation of a Nickelocene Molecule [PDF]
Nano Letters, 2017 Inelastic electron tunneling spectroscopy (IETS) within the junction of a scanning tunneling microscope (STM) uses current-driven spin-flip excitations for an all-electrical characterization of the spin state of a single object. Usually decoupling layers between the single object, atom or molecule, and the supporting surface are needed to observe these
Ormaza, Maider +11 more
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COUPLING RADIATION LOSS IN THE MIRROR DIELECTRIC DISK RESONATOR. Part 1. MATCHED WAVEGUIDE COUPLING [PDF]
Радиофизика и электроника, 2015 The application of open resonators in the measurement technique or in the generator oscillation systems requires taking into account the influence of coupling elements (CE) on the open resonator (OR) characteristics.
V. V. Glamazdin +3 more
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On the Efficiency of a Piezoelectric Energy Harvester under Combined Aeroelastic and Base Excitation
Micromachines, 2021 A flutter-type, nonlinear piezoelectric energy harvester was tested in various combinations of aerodynamic and harmonic base excitation to study its power output and efficiency. The commercial polyvinylidene fluoride film transducer LDT1-028K was used in
Antiopi-Malvina Stamatellou +1 more
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The Influence of Coupling Coil on the Transmission Efficiency in Wireless Transmission System
Journal of Harbin University of Science and Technology, 2022 In order to study the influence of the coupling coils on the transmission efficiency in wireless power transmission system with low-frequency excitation source, the dual software co-simulation method is used to analyze the magnetic field distribution ...
SUN Zi-han, CHEN Shi-yu
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An efficient protocol for excited states of large biochromophores
The Journal of Chemical Physics, 2023 Efficient energy transport in photosynthetic antenna is a long-standing source of inspiration for artificial light harvesting materials. However, characterizing the excited states of the constituent chromophores poses a considerable challenge to mainstream quantum chemical and semiempirical excited state methods due to their size and complexity and the
Oliver Feighan +2 more
openaire +3 more sources