Results 21 to 30 of about 18,433,311 (402)
Sensors, 2020 The Coriolis Vibratory Gyroscopes are a type of sensors that measure angular velocities through the Coriolis effect. The resonator is the critical component of the CVGs, the vibrational characteristics of which, including the resonant frequency ...
Pengbo Xiao +10 more
doaj +1 more source
Effect of defects on Q factors of single-crystal diamond MEMS resonators
Functional Diamond, 2023 A resonator with a high Q factor is generally pursued in the single-crystal diamond (SCD) microelectromechanical system (MEMS) for high-performance sensors.
Zilong Zhang +4 more
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Efficient second-harmonic generation in high Q-factor asymmetric lithium niobate metasurfaces.
Optics Letters, 2021 Lithium niobate (LN) has been widely used for second-harmonic generation (SHG) from bulk crystals. Recent studies have reported improved SHG efficiency in LN micro-ring resonators and hybrid waveguiding structures, as well as in LN nanostructures ...
L. Kang, H. Bao, D. Werner
semanticscholar +1 more source
Sensors, 2020 The fused silica cylindrical resonator is a type of axisymmetric resonator that can be used for Coriolis vibratory gyroscopes. Although the resonant frequency, frequency mismatch, and Q factor are natural properties of the resonator, they can change with
Pengbo Xiao +7 more
doaj +1 more source
Compound fault diagnosis of rolling bearings based on improved tunable Q-factor wavelet transform
Measurement science and technology, 2021 In order to solve the difficulty of compound fault diagnosis of rolling bearings, a novel rolling bearings fault diagnosis method based on improved tunable Q-factor wavelet transform (TQWT) is proposed in this paper.
Yongtao Hu +4 more
semanticscholar +1 more source
Increasing the Quality Factor (Q) of 1D Photonic Crystal Cavity with an End Loop-Mirror
Photonics, 2021 Increasing the quality factor (Q-factor) of an optical resonator device has been a research focus utilized in various applications. Higher Q-factor means light is confined in a longer time which will produce a sharper peak and higher transmission.
Mohamad Hazwan Haron +2 more
doaj +1 more source
Bulletin of the Mineral Research and Exploration, 2021 Seismic wave propagation in subsurface media endures from absorption, which can be evaluated by the seismic quality factor Q (Q-factor). Absorption is frequency-dependent.
Muammer Tün
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Nearly constant Q dissipative models and wave equations for general viscoelastic anisotropy [PDF]
Proc. R. Soc. A 477: 20210170 (2021), 2021 The quality factor (Q) links seismic wave energy dissipation to physical properties of the Earth's interior, such as temperature, stress and composition. Frequency independence of Q, also called constant Q for brevity, is a common assumption in practice for seismic Q inversions.
arxiv +1 more source
An Augmented q-Factor Model with Expected Growth
, 2020 In the investment theory, firms with high expected investment growth earn higher expected returns than firms with low expected investment growth, holding investment and expected profitability constant.
Kewei Hou, Haitao Mo, Chen Xue, Lu Zhang
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Twenty-nine million Intrinsic Q-factor Monolithic Microresonators on Thin Film Lithium Niobate [PDF]
Photonics ResearchThe recent emergence of thin-film lithium niobate (TFLN) has extended the landscape of integrated photonics. This has been enabled by the commercialization of TFLN wafers and advanced nanofabrication of TFLN such as high-quality dry etching.
Xinrui Zhu +9 more
semanticscholar +1 more source