Results 11 to 20 of about 3,764,170 (250)

Frequency-hopping mechanism and control method for nonlinear parity-time-symmetric wireless power transfer systems

open access: yesFrontiers in Energy Research, 2023
Nonlinear parity-time-symmetric wireless power transfer (NPTS-WPT) is a novel wireless power transfer technology. NPTS-WPT systems exhibit the resonant frequency bifurcation phenomenon in the strong coupling region.
Changsheng Li   +4 more
doaj   +1 more source

Use of triple beam resonant gauges in torque measurement transfer standard [PDF]

open access: yes, 2010
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.A new torque transfer standard using metallic TBTF resonant sensor was developed to overcome the overload capability problem which occurs with conventional ...
Intiang, Jittakant
core   +6 more sources

Frequency Characteristic of Resonant Micro Fluidic Chip for Oil Detection Based on Resistance Parameter

open access: yesMicromachines, 2018
Monitoring the working condition of hydraulic equipment is significance in industrial fields. The abnormal wear of the hydraulic system can be revealed by detecting the variety and size of micro metal debris in the hydraulic oil.
Zilei Yu   +5 more
doaj   +1 more source

Wireless High Temperature Sensing Chipless Tag Based on a Diamond Ring Resonator

open access: yesMicromachines, 2023
A passive wireless sensor is designed for real-time monitoring of a high temperature environment. The sensor is composed of a double diamond split rings resonant structure and an alumina ceramic substrate with a size of 23 × 23 × 0.5 mm3.
Bo Wang, Youwei Li, Tingting Gu, Ke Wang
doaj   +1 more source

Nickel Thin Film Resonantly Generated at a Rate of Megahertz

open access: yesInternational Journal of Electrochemical Science, 2016
Resonant frequencies at which masses of Ni thin films deposited from a nickel sulfamate solution significantly increase are observed using a rectangular pulse current technique having a frequency of the megahertz scale.
M. Saitou
doaj   +1 more source

Time Domain Simplified Equations and its Iterative Calculation Model for LLC Resonant Converter

open access: yesIEEE Access, 2020
LLC resonant converters can achieve soft switching and loss reduction. However, the analysis methods of wide frequency range LLC converters generally have problems with incomplete working condition analysis at non-resonant frequencies and there is always
Jingkai Niu   +5 more
doaj   +1 more source

Analysis of the Thermally Induced Packaging Effects on the Frequency Drift of Micro-Electromechanical System Resonant Accelerometer

open access: yesMicromachines, 2023
Due to the working principle of MEMS resonant accelerometers, their thermally induced frequency drift is an inevitable practical issue for their extensive application.
Xiaorui Bie   +5 more
doaj   +1 more source

Few-cycle fiber pulse compression and evolution of negative resonant radiation [PDF]

open access: yes, 2014
We present experimental observations of the spectral expansion of fs-pulses compressing in optical fibers. Using the input pulse frequency chirp we are able to scan through the pulse compression spectra and observe in detail the emergence of negative ...
McLenaghan, J.   +1 more
core   +1 more source

Analysis of HepG2 cell response to a wide concentration range of mitomycin C using a multichannel quartz crystal microbalance system with a microscope

open access: yesHeliyon, 2023
The morphological response of HepG2 cells to mitomycin C was analyzed using a multichannel quartz crystal microbalance system equipped with a home-built movable microscope that enables the simultaneous acquisition of cell images and measurements of eight-
Hiroshi Muramatsu   +3 more
doaj   +1 more source

Research Progress of Locally Resonance Acoustic Metamaterials [PDF]

open access: yesE3S Web of Conferences, 2021
Bragg scattering phonon crystal and locally resonant acoustic metamaterials were introduced. In order to generate noise reduction, the lattice constant of Bragg scattering phonon crystal should be of the same order of magnitude as the wave length of the ...
Zhehua Du
doaj   +1 more source

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