Terahertz Gap

Cloaking became more than a theory in 2006 when Duke University researchers designed split-resonator metamaterials that, capable of negative refraction, could guide microwaves around a “secret” pouch. The waves seemed to curve above, below and around the pouch without being disrupted in their path, as if the pouch were invisible. Since then, Xiang Zhang’s Berkeley group has devised two new metamaterials for cloaking in the visible part of the spectrum, reported in August 2008 in Science and Nature.
Early last year, Shuang Zhang proposed a matter cloak. Not only light, but also matter “waves” would warp around a small, protected, spherical area. Matter waves exist at the quantum level where quantum mechanics blurs the boundaries between the properties of particles and those of waves. If matter can be cloaked from light waves, so too can matter waves be cloaked from matter, Shuang Zhang and his colleagues suggested in March 2008 in Physical Review Letters.
Few have tried to warp T-rays around a sphere because the radiation is so hard to produce in the first place, Tao says. Nonetheless, at the 2008 IEEE International Electron Devices Meeting, the Boston group said it would build a terahertz invisibility cloak. Such a cloak would countervail T-ray screening technology.

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2009-04-02 回答
超过一个理论隐匿成为2006年杜克大学研究人员设计的能力,这split-resonator超颖物质可以引导微波负折射,围绕“秘密”的腰包。海浪似乎曲线的上方,下方,眼袋,没有被破坏的道路,就好像他们是无形的育儿袋。从那时起,向张的伯克利集团已经设计出两个新的超颖物质为隐形的冰山看得见的部分,报导2008年8月在科学和自然。
  去年早些时候,双张模型,提出了一种物质斗篷。不仅是光,但也会扭曲问题”波”一个小,保护周围地区,球形。在物质波的存在,在量子级之间的界限模糊的量子力学性能的粒子与那些波。如果事情能够隐身,所以也从光波从物质波能被隐身,双张华和他的同事建议在2008年3月的《物理评论通讯》。
  一些试图跃迁T-rays周围的辐射范围,因为很难产生放在第一位,道说。虽然如此,在2008年国际电子设备之会议,波士顿集团表示,它将建立一个太赫兹隐形斗篷。这样的斗篷就偿还T-ray筛选技术。