The Experts below are selected from a list of 4104 Experts worldwide ranked by ideXlab platform
Ji-suo Wang - One of the best experts on this subject based on the ideXlab platform.
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Equivalent Analogy of Mesoscopic RLC Circuit and Its Thermal Effect
International Journal of Theoretical Physics, 2010Co-Authors: Bao-long Liang, Shi-xue Song, Ji-suo Wang, Xiang-guo MengAbstract:A new method of quantizing the mesoscopic RLC Circuit is proposed, i.e., such a Circuit can be equivalent to a changing mass simple harmonic oscillator. By virtue of the thermal entangled state representation and the generalized Hellmann-Feynman Theorem, the thermal effect for the system is investigated.
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QUANTIZATION FOR THE MESOSCOPIC RLC Circuit AND ITS THERMAL EFFECT BY VIRTUE OF GHFT
Modern Physics Letters B, 2009Co-Authors: Bao-long Liang, Ji-suo Wang, Xiang-guo MengAbstract:The mesoscopic single RLC (resistance-inductance-capacitance) Circuit and the RLC Circuit including complicated coupling are quantized by employing Dirac's standard canonical quantization method. The thermal effects for the systems are investigated by virtue of GHFT (the generalized Hellmann–Feynman theorem). The results distinctly show the effect of temperature on the quantum fluctuation.
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Marginal Distribution of Wigner Function in Mesoscopic RLC Circuit at Finite Temperature and Its Application
International Journal of Theoretical Physics, 2009Co-Authors: Xiao-yan Zhang, Ji-suo Wang, Bao-long Liang, Jie SuAbstract:By means of the Weyl correspondence and Wigner theorem the marginal distribution of Wigner function in mesoscopic RLC Circuit at finite temperature was discussed. Here we endow the Wigner function with a new physical meaning, i.e., its marginal distributions’ statistical average for q 2/(2C) and p 2/(2L) are the temperature-related energy stored in capacity and in inductance of the mesoscopic RLC Circuit, respectively.
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the quantum fluctuations of mesoscopic damped mutual inductance coupled double resonance RLC Circuit at finite temperature
International Journal of Modern Physics B, 2007Co-Authors: Ji-suo WangAbstract:Mesoscopic damped mutual inductance coupled double resonance RLC Circuit is quantized by the method of damped harmonic oscillator quantization and linear transformation. The energy levels of this Circuit are given. By thermo-field dynamics (TFD), the quantum fluctuations of the current and voltage of each loop are researched in the thermal vacuum state, thermal coherent state and thermal squeezed state. It is shown that the quantum fluctuations of the current and voltage are related not only to the Circuit inherent parameter and coupled magnitude of mutual inductance, but also squeezed coefficients, squeezed angle, environmental temperature and damped resistance. Furthermore, because of environmental temperature and damped resistance, the quantum fluctuations increase with the increase of temperature and decay along with time.
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quantum fluctuations of mesoscopic RLC Circuit involving complicated coupling in thermal squeezed state
Physica B-condensed Matter, 2007Co-Authors: Ji-suo WangAbstract:Abstract Starting from the Kirchhoff's equation for electric Circuits and in reference of damped harmonic oscillator quantization and thermo-field dynamics (TFD), the quantization of damped double-resonance mesoscopic RLC Circuit involving complicated coupling is proposed. The quantum fluctuations of charge and current of each loop are calculated in thermal squeezed state, thermal coherent state and thermal vacuum state, respectively. The results not only depend on the Circuit proper parameters and coupled magnitude, but also rely on the squeezing coefficients, environmental temperature and damped resistance. The fluctuations increase with temperature rising and decay with time.
Andrew Mcdaid - One of the best experts on this subject based on the ideXlab platform.
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Increasing signal amplitude in electrical impedance tomography of neural activity using a parallel resistor inductor capacitor (RLC) Circuit
Journal of neural engineering, 2019Co-Authors: J. Hope, Zaid Aqrawe, Marshall Lim, Frédérique Vanholsbeeck, Andrew McdaidAbstract:Objective: To increase the impedance signal amplitude produced during neural activity using a novel approach of implementing a parallel resistor inductor capacitor (RLC) Circuit across the current source used in electrical impedance tomography (EIT) of peripheral nerve. Approach: Experiments were performed in vitro on sciatic nerve of Sprague-Dawley rats. Design of the RLC Circuit was performed in electrical Circuit modelling software, aided by in vitro impedance measurements on nerve and nerve cuff in the range 5 Hz to 50 kHz. Main results: The frequency range 17 +/- 1 kHz was selected for the RLC experiment. The RLC experiment was performed on four subjects using an RLC Circuit designed to produce a resonant frequency of 17 kHz with a bandwidth of 3.6 kHz, and containing a 22 mH inductive element and a 3.45 nF capacitive element. With the RLC Circuit connected, relative increases in the impedance signal (+/- 3sig noise) of 44 % (+/-15 %), 33 % (+/-30 %), 37 % (+/-8.6 %), and 16 % (+/-19 %) were produced. Significance: The increase in impedance signal amplitude at high frequencies, generated by the novel implementation of a parallel RLC Circuit across the drive current, improves spatial resolution by increasing the number of parallel drive currents which can be implemented in a frequency division multiplexed (FDM) EIT system, and aids the long term goal of a real-time FDM EIT system by reducing the need for ensemble averaging.
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increasing signal amplitude in electrical impedance tomography of neural activity using a parallel resistor inductor capacitor RLC Circuit
Journal of Neural Engineering, 2019Co-Authors: J. Hope, Zaid Aqrawe, Marshall Lim, Frédérique Vanholsbeeck, Andrew McdaidAbstract:OBJECTIVE To increase the impedance signal amplitude produced during neural activity using a novel approach of implementing a parallel resistor inductor capacitor (RLC) Circuit across the current source used in electrical impedance tomography (EIT) of peripheral nerve. APPROACH The frequency response of the impedance signal was characterized in the range 4-18 kHz, then a frequency range with significant capacitive charge transfer was selected for experiment with the RLC Circuit. Design of the RLC Circuit was aided by in vitro impedance measurements on nerve and nerve cuff in the range 5 Hz to 50 kHz. MAIN RESULTS The frequency response of the impedance signal across 4-18 kHz showed maximum amplitude at 6-8 kHz, and steady decline in amplitude between 8 and 18 kHz with -6 dB reduction at 14 kHz. The frequency range 17 ± 1 kHz was selected for the RLC experiment. The RLC experiment was performed on four subjects using an RLC Circuit designed to produce a resonant frequency of 17 kHz with a bandwidth of 3.6 kHz, and containing a 22 mH inductive element and a 3.45 nF capacitive element with +0.8/- 3.45 nF manual tuning range. With the RLC Circuit connected, relative increases in the impedance signal (±3σ noise) of 44% (±15%), 33% (±30%), 37% (±8.6%), and 16% (±19%) were produced. SIGNIFICANCE The increase in impedance signal amplitude at high frequencies, generated by the novel implementation of a parallel RLC Circuit across the drive current, improves spatial resolution by increasing the number of parallel drive currents which can be implemented in a frequency division multiplexed (FDM) EIT system, and aids the long term goal of a real-time FDM EIT system by reducing the need for ensemble averaging.
Atsushi Sakurai - One of the best experts on this subject based on the ideXlab platform.
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resonant frequency and bandwidth of metamaterial emitters and absorbers predicted by an RLC Circuit model
Journal of Quantitative Spectroscopy & Radiative Transfer, 2014Co-Authors: Atsushi Sakurai, Bo Zhao, Z M ZhangAbstract:Abstract Metamaterial thermal emitters and absorbers have been widely studied for different geometric patterns by exciting a variety of electromagnetic resonances. A resistor–inductor–capacitor (RLC) Circuit model is developed to describe the magnetic resonances (i.e. magnetic polaritons) inside the structures. The RLC Circuit model allows the prediction of not only the resonance frequency, but also the full width at half maximum and quality factor for various geometric patterns. The parameters predicted by the RLC model are compared with the finite-difference time-domain simulation. The magnetic field distribution and the power dissipation density profile are also used to justify the RLC Circuit model. The geometric effects on the resonance characteristics are elucidated in the wire (or strip), cross, and square patterned metamaterial in the infrared region. This study will facilitate the design of metamaterial absorbers and emitters based on magnetic polaritons.
J. Hope - One of the best experts on this subject based on the ideXlab platform.
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Increasing signal amplitude in electrical impedance tomography of neural activity using a parallel resistor inductor capacitor (RLC) Circuit
Journal of neural engineering, 2019Co-Authors: J. Hope, Zaid Aqrawe, Marshall Lim, Frédérique Vanholsbeeck, Andrew McdaidAbstract:Objective: To increase the impedance signal amplitude produced during neural activity using a novel approach of implementing a parallel resistor inductor capacitor (RLC) Circuit across the current source used in electrical impedance tomography (EIT) of peripheral nerve. Approach: Experiments were performed in vitro on sciatic nerve of Sprague-Dawley rats. Design of the RLC Circuit was performed in electrical Circuit modelling software, aided by in vitro impedance measurements on nerve and nerve cuff in the range 5 Hz to 50 kHz. Main results: The frequency range 17 +/- 1 kHz was selected for the RLC experiment. The RLC experiment was performed on four subjects using an RLC Circuit designed to produce a resonant frequency of 17 kHz with a bandwidth of 3.6 kHz, and containing a 22 mH inductive element and a 3.45 nF capacitive element. With the RLC Circuit connected, relative increases in the impedance signal (+/- 3sig noise) of 44 % (+/-15 %), 33 % (+/-30 %), 37 % (+/-8.6 %), and 16 % (+/-19 %) were produced. Significance: The increase in impedance signal amplitude at high frequencies, generated by the novel implementation of a parallel RLC Circuit across the drive current, improves spatial resolution by increasing the number of parallel drive currents which can be implemented in a frequency division multiplexed (FDM) EIT system, and aids the long term goal of a real-time FDM EIT system by reducing the need for ensemble averaging.
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increasing signal amplitude in electrical impedance tomography of neural activity using a parallel resistor inductor capacitor RLC Circuit
Journal of Neural Engineering, 2019Co-Authors: J. Hope, Zaid Aqrawe, Marshall Lim, Frédérique Vanholsbeeck, Andrew McdaidAbstract:OBJECTIVE To increase the impedance signal amplitude produced during neural activity using a novel approach of implementing a parallel resistor inductor capacitor (RLC) Circuit across the current source used in electrical impedance tomography (EIT) of peripheral nerve. APPROACH The frequency response of the impedance signal was characterized in the range 4-18 kHz, then a frequency range with significant capacitive charge transfer was selected for experiment with the RLC Circuit. Design of the RLC Circuit was aided by in vitro impedance measurements on nerve and nerve cuff in the range 5 Hz to 50 kHz. MAIN RESULTS The frequency response of the impedance signal across 4-18 kHz showed maximum amplitude at 6-8 kHz, and steady decline in amplitude between 8 and 18 kHz with -6 dB reduction at 14 kHz. The frequency range 17 ± 1 kHz was selected for the RLC experiment. The RLC experiment was performed on four subjects using an RLC Circuit designed to produce a resonant frequency of 17 kHz with a bandwidth of 3.6 kHz, and containing a 22 mH inductive element and a 3.45 nF capacitive element with +0.8/- 3.45 nF manual tuning range. With the RLC Circuit connected, relative increases in the impedance signal (±3σ noise) of 44% (±15%), 33% (±30%), 37% (±8.6%), and 16% (±19%) were produced. SIGNIFICANCE The increase in impedance signal amplitude at high frequencies, generated by the novel implementation of a parallel RLC Circuit across the drive current, improves spatial resolution by increasing the number of parallel drive currents which can be implemented in a frequency division multiplexed (FDM) EIT system, and aids the long term goal of a real-time FDM EIT system by reducing the need for ensemble averaging.
Mats Leijon - One of the best experts on this subject based on the ideXlab platform.
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a methodology of modelling a wave power system via an equivalent RLC Circuit
IEEE Transactions on Sustainable Energy, 2016Co-Authors: Ling Hai, Malin Goteman, Mats LeijonAbstract:The equivalent Circuit method can be an effective modelling technique for system studies of point absorbing wave energy converters (WECs). For the continuously evolving design and study of WEC systems, an instruction on how to draw the corresponding equivalent RLC Circuit model is needed. It is not only vital to make sure the model is correct, but to allow the model to be easily adapted for different cases and implemented by different researchers. This paper presents a force analysis-oriented methodology based on a typical WEC unit composed of a heaving buoy and a linear generator. Three cases are studied in order to demonstrate the procedures: the generator with a retracting spring, the connection line with a rubber damper, and buoy motion in both heave and surge directions. The presented methodology serves as a guide to produce nonlinear Circuit models that give a reliable description of the dynamics of real wave energy systems.
