传播的电磁波的推力

PEMC中的平面电磁波

Plane electromagnetic wave in PEMC

研究了平面电磁波在理想电磁导体中的传播。它的波数与频率无关。在普通各向同性介质和质子交换膜之间引入界面。将电磁兼容中的电磁波与从普通介质垂直入射到界面上并被其反射的平面电磁波相匹配，然后考虑由电磁兼容材料构成的平面平行平板，发现平板中存在平面波。

双面相对论镜产生的高次谐波脉冲

Boosted high harmonics pulse from a double-sided relativistic mirror

提出了一种超亮高强度X射线和γ射线源。高密度薄等离子体板在辐射压力主导区被同向传播的超强电磁波加速，反射反向传播的相对论性强电磁波，由于双重多普勒效应产生强烈的时间压缩和增强辐射。反射光包含在等离子体板处产生的相对论谐波，所有这些谐波都以与入射光的基模相同的因子上移。

环状电磁脉冲的标量轴子场

Scalar axion field of toroidal electromagnetic pulses

研究环状电磁脉冲在自由空间中的叠加如何产生非零E·B区域，通过轴子电磁动力学生成时空局域的伪标量场。

Momentum exchange between an electromagnetic wave and a dispersive medium

We present an elementary discussion of the momentum transferred by an electromagnetic wave propagating in a dispersive medium. Our analysis is based on Minkowski's electromagnetic momentum density which have been recently seen to be consistent with a fully covariant expression of the energy-momentum tensor of the electromagnetic field in a dispersive medium and with all the experimental evidence. We show that the medium may be either pulled or pushed as the electromagnetic pulse enters in it depending on the value of the frequency.

Nature of the electromagnetic force between classical magnetic dipoles

The Lorentz force law of classical electrodynamics states that the force F exerted by the magnetic induction B on a particle of charge q moving with velocity V is given by F=qVxB. Since this force is orthogonal to the direction of motion, the magnetic field is said to be incapable of performing mechanical work. Yet there is no denying that a permanent magnet can readily perform mechanical work by pushing/pulling on another permanent magnet -- or by attracting pieces of magnetizable material such as scrap iron or iron filings. We explain this apparent contradiction by examining the magnetic Lor…

通过表面电磁波在损耗介质中的电磁信号传播

Electromagnetic signal propagation through lossy media via surface electromagnetic waves

本文建立了任意表面梯度介质中表面电磁波的理论，发现虚部主导的梯度介质中存在新型低损耗表面波解，并展示了从水下通信到紫外纳米光子学的应用。

介质中电磁波的动量

The momentum of an electromagnetic wave inside a dielectric

给在绝缘体中传播的电磁波包分配动量的问题以亚伯拉罕-闵可夫斯基争论的名义而闻名。在本文中，我们重新审视这个问题，首先通过在介质的极化率的功率扩展，并假设最简单和最自然的选择施加在电介质材料上的电磁场的力。它表明，亚伯拉罕表达是非常赞成的。然后，我们展示了这些结果的完整的一般性。

Surface electromagnetic waves at gradual interfaces between lossy media

A low loss propagating electromagnetic wave is shown to exist at a gradual interface between two lossy conductive media. The electromagnetic frequency range of this phenomenon may span from UV optics to RF range. In particular, it is demonstrated that such a surface wave may be guided by a seafloor-seawater interface and it may be used in radio communication and imaging underwater. Similar surface waves may also be guided by various tissue boundaries inside a human body. For example, such surface wave solutions may exist at planar interfaces between skull bones and grey matter inside a human h…

通过变换光学结构的电磁波束调制

Electromagnetic beam modulating through transformation optical structures

基于坐标变换下形式不变的麦克斯韦方程组的变换介质概念为操纵电磁场开辟了新的可能性。在本文中，我们报告应用有限嵌入坐标变换法设计电磁束调制装置在笛卡尔坐标系和柱坐标系。通过不同的坐标变换设计变换光学结构的材料本构张量，既可以通过平板调制入射高斯平面波的束宽，也可以通过圆柱壳调制全向光源的波传播方向。我们提出的设计程序和全波电磁仿真，清楚地确认所提出的光束调制设备的性能。

电磁波传播的格子玻尔兹曼方法

Lattice Boltzmann Method for Electromagnetic Wave Propagation

我们提出了一种新的格子玻尔兹曼（LB）公式来求解电磁波在非均匀介质中传播的麦克斯韦方程组。通过使用伪矢量离散玻尔兹曼分布，该方案被证明是再现连续麦克斯韦方程组。该技术相比，以及在解决二维波在非均匀介质中的传播，其中通过设计包含大量的折射率的对比度的伪谱方法。扩展到三维自然遵循，由于公认的效率LB计划的并行计算在不规则的几何形状，它提供了一个强大的方法来数值模拟涉及电磁波在复杂介质中传播的广泛的问题。

左手材料驱动的非辐射和辐射结构

Non-radiating and radiating configurations driven by left-handed metamaterials

它示出了一对相同的发射器（例如，线偶极天线）的焦点的光盘，由左手的超材料（一个“完美”的镜头），形成一个非辐射电磁配置。发射极被馈送有相等幅度和π异相的电压。详细的时域有限差分（FDTD）建模表明，有非传播的电磁场产生-场保持限制在发射器和透镜之间的区域内。系统的能量平衡表明，系统的抗辐射能力很低。这意味着输入功率在透镜的体积中被转换为热量，并且只有一小部分被辐射。系统性能表明，干扰的非传播电磁场的配置与外部引入的对象的存在刺激辐射。这表明可能的探测器应用。还研究了同相馈电电压，其结果是天线的辐射电阻增加。