搜索结果: 76-90 共查到“知识库 电磁学其他学科”相关记录226条 . 查询时间(5.516 秒)
Electromagnetically Induced Transparency from Two Phonon Processes in Quadratically Coupled Membranes
Electromagnetically Phonon Processes Quadratically Coupled Membranes
2010/10/29
We describe how electromagnetically induced transparency can arise in quadratically coupled optomechanical systems. Due to quadratic coupling the underlying optical process involves a two phonon proce...
We give a short review of a number of different models for treating magnetization effects in plasmas. In particular, the transition between kinetic models and fluid models is discussed. We also give e...
Wave packet revivals in a graphene quantum dot in a perpendicular magnetic field
packet revivals graphene quantum dot perpendicular magnetic field
2010/10/27
We study the time-evolution of localized wavepackets in graphene quantum dots in a perpendicular magnetic field, focusing on the quasiclassical and revival periodicities, for different values of the m...
Charge sensing amplification via weak values measurement
amplification values measurement
2010/10/27
A protocol employing weak values (WVs) to obtain ultra sensitive amplification of weak signals
in the context of a solid state setup is proposed. We consider an Aharonov-Bohm interferometer
where bo...
The scattering amplitude of ultracold atoms near the p-wave magnetic Feshbach Resonance
The scattering amplitude ultracold atoms p-wave magnetic Feshbach Resonance
2010/11/9
Most of the current theories on the p-wave superfluid in cold atomic gases are based on the effective-range theory for the two-body scattering, where the low energy p-wave scattering amplitude $f_1(k)...
基于DSP的双闭环控制系统逆变器
逆变器 DSP 双闭环控制
2012/3/23
给出了一种以高性能控制器DSP为核心，采用电压电流双闭环控制的逆变器系统。经实验证实，该系统具有体积小、稳态精度高、动态响应快等优点。
In this article we investigate the Casimir e ect in the presence of a medium by quantizing the
Electromagnetic (EM) eld in the presence of a magnetodielectric medium by using the path in-
tegral fo...
Canonical quantization of macroscopic electromagnetism
Canonical quantization macroscopic electromagnetism
2010/10/21
Application of the standard canonical quantization rules of quantum field theory to macroscopic electromagnetism has encountered obstacles due to material dispersion and absorption. This has led to a ...
Single Crystal Sapphire at milli-Kelvin Temperatures: Observation of Electromagnetically Induced Thermal Bistability in High Q-factor Whispering Gallery Modes
Single Crystal Sapphire milli-Kelvin Temperatures: Observation of Electromagnetically Induced Thermal Bistability High Q-factor Whispering Gallery Modes
2010/10/21
Resonance modes in single crystal sapphire ( -Al2O3) exhibit extremely high electrical and me-
chanical Q-factors ( 109 at 4K), which are important characteristics for electromechanical ex-periments...
法拉第对阿拉果铜盘实验现象的研究和解释
法拉第 法拉第日记 阿拉果铜盘实验 电磁感应
2013/11/18
详细介绍了法拉第研究和解释阿拉果铜盘实验现象的过程,阐明了在法拉第的研究过程中,对阿拉果铜盘实验现象的研究与其电磁感应现象的发现及研究之间的紧密联系。说明法拉第对阿拉果铜盘实验现象的研究和解释极大地促进了其对电磁感应现象的研究,是其电磁感应原理应用于实践研究的一个重要胜利,促进了电磁感应原理的传播和承认。
通过地面模拟试验测量了火箭分离时火工品的爆炸产生的电磁辐射.通过杆天线和实时频谱仪测量了不同种类的航天火工品的爆炸辐射,表明辐射随着爆炸能量的增加而增强.使用聚能炸药索时,在爆炸分离后的数十毫秒内都会有明显的电磁脉冲出现,其频率主要集中在兆赫兹量级,在单个频点上的电场峰值可达数个V/m.使用偶极子天线对爆炸时舱体内外的电磁环境进行了对比,并对舱内线路上的感应电流脉冲进行了测量,得到了一些初步结论....
基于磁流体的流量传感理论及实验研究
磁流体 流量 传感器 电感
2013/9/9
磁流体流量传感器是磁流体的一个很重要的应用方向. 通过计算在层流和紊流状态下被测液体流量值与U型管两端输入压强差之间的关系, 得出在层流时被测液体流量与压差成正比, 而在紊流时流量与压差不成线性关系. 对U型管两端线圈电感、线圈两端电势差的计算, 最终得出输出电势差与流量成正比关系, 与线圈长度的平方成反比关系, 同时通过实验进一步验证了在层流状态下磁流体流量传感器设计研究的可行性.
应用电导探针技术识别气液两相流流型方法及电导波动信号噪声的辨识
气液两相流 噪声辨识 电导探针 自相关函数
2014/5/9
针对垂直上升管的气液两相流流型的识别，提出了一种多电导探针测量系统，该测量系统由3个电导探头组成电导传感器，在此基础上利用INV306型数据采集卡实现了电导波动信号的数据采集。由于各种生产过程的参数进行测量时不可避免地信号中存在噪声信息，通过对信号的小波分解和自相关函数的分析发现电导波动信号为低频信号，且其频率一般不会超过128Hz。又通过对信号进行了小波去噪和傅立叶变换去噪之后发现利用小波分析进...
一种基于DSP的实时手势交互系统
手势识别 表面肌电 加速度 DSP
2014/4/29
本文设计了一种基于DSP的实时手势交互系统，该系统包含多通道无线传感器模块、信号接收及处理模块和手势应用模块。多通道无线传感器模块可直接穿戴于人体，采集并无线发送与手势动作有关的表面肌电(surface electromyography，sEMG)和加速度(Acceleration, ACC)信号，信号接收及处理模块无线接收数据并利用16位定点DSP芯片TMS320VC5502完成手势动作模式识别...
Classical Particle in Presence of Magnetic Field, Hyperbolic Lobachevsky and Spherical Riemann Models
Magnetic Field Spherical Riemann Models Hyperbolic Lobachevsky
2010/4/1
Motion of a classical particle in 3-dimensional Lobachevsky and Riemann spaces is studied in the presence of an external magnetic field which is analogous to a constant uniform magnetic field in Eucli...