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首页> 外文会议>Metamaterials II; Proceedings of SPIE-The International Society for Optical Engineering; vol.6581 >Metamaterial phenomenons via uniform motion
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Metamaterial phenomenons via uniform motion

机译：通过匀速运动的超材料现象

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摘要

Metamaterials offer exotic electromagnetic possibilities, beyond those usually associated with conventional materials. Two general phenomenons associated with metamaterials have attracted much recent attention: negative-phase-velocity (NPV) propagation, and cloaking and invisibility. Relatively simple materials may (ⅰ) support NPV propagation, and (ⅱ) offer concealment to a substantial degree, by means of translation at constant velocity. By virtue of the Minkowski constitutive relations, planewave propagation in a homogeneous, instantaneously responding, dielectric-magnetic material that is isotropic in the co-moving reference frame, can be classified as positive-, negative-, and orthogonal-phase-velocity (PPV, NPV, and OPV) propagation in a non-co-moving reference frame, depending upon the magnitude and direction of that reference frame's velocity relative to the material. The perceived lateral position of a transmitted beam, upon propagating at an oblique angle through a slab of homogeneous, instantaneously responding, isotropic, dielectric material, can be controlled via the velocity of the slab. Therefore, by appropriate choice of the slab's velocity, the transmitted beam can emerge from the slab with no lateral shift in position, and a substantial degree of concealment may be achieved.
机译：除了通常与常规材料相关的电磁材料之外，超材料还提供了奇特的电磁可能性。与超材料相关的两个普遍现象最近引起了人们的广泛关注：负相速度（NPV）传播以及隐身和隐形。相对简单的材料可能（ⅰ）支持NPV传播，并且（ⅱ）通过以恒定速度平移的方式提供很大程度的隐藏。根据Minkowski本构关系，平面波在同向，瞬时响应，在同向运动参考系中各向同性的介电材料中的传播可以分为正相，负相和正交相速度（PPV） ，NPV和OPV）在同向移动的参考系中传播，具体取决于该参考系相对于材料的速度的大小和方向。当以均匀的，瞬时响应的，各向同性的介电材料的平板斜向传播时，可以通过平板的速度控制透射光束的感知横向位置。因此，通过适当选择平板的速度，透射光束可以从平板中射出而没有侧向位置偏移，并且可以实现相当大的隐蔽度。

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