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中国科学家本月成功制造了一个黑洞
送交者:  2010年08月17日11:08:20 于 [世界时事论坛] 发送悄悄话



Chinese scientists create mini 'black hole'By Ben Coxworth
00:24 June 4, 2010


9 Comments



The microwave-trapping omnidirectional electromagnetic absorber






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Researchers at Southeast University in Nanjing, China have created a device that traps and absorbs electromagnetic waves coming from all directions, spiraling them inwards without any reflections, essentially creating an electromagnetic black hole. Qiang Cheng and Tie Jun Cui’s “omnidirectional electromagnetic absorber” draws in microwaves coming from any direction by spiraling radiation inwards, and converting its energy into heat. They plan on developing a device that can absorb visible light next.
Working in the university’s State Key Laboratory of Millimeter Waves, Cheng and Cui built their device from 60 strips of circuit board, arranged in concentric layers and coated in metamaterials. The spiraling effect was created by using non-microwave-resonant metamaterials on the outer layer, while using resonant ones in the inner core. Obviously, there was a little more to it than that, but the end result was a gizmo that absorbed 99 percent of incoming microwave radiation.
Besides Lex Luthor and company, who might be interested in such technology? Since the lossy core of the device can transfer the electromagnetic energies into heat energies, the scientist expect that the omnidirectional absorber could have applications in thermal emission and electromagnetic-wave harvesting, perhaps finding its way into electronic devices, imaging systems, or heating and cooling systems.
The research was published in the New Journal of Physics
.

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Tags
  • » Electromagnetic
  • » Metamaterials
  • » microwave
  • » Radiation



  • User Comments (9) This can Be the scariest Ultimate Stealth Technology where heat can be used to generate electricity or dissipiated !!!

    jaison Sibley
    - June 6, 2010 @ 01:06 am PDT



I wonder if we could infer the existence of these 'black holes' by their proximity to WiFi hotspots?
Adze
- June 12, 2010 @ 06:06 pm PDT



1 step ahead to open the star gate.This discovery will lead us to better understanding on quantum mechanic. While everyone searching for God Particle, Southeast University can do further research, this could be use to build tool.Create possibility to study deeper on both electron and positron.

twt
Any scientist fooling around with nature's deadliest instrument of death is not only foolish, but stupid.We know absolutely nothing about black holes. We haven't even started scratching the surface.


The chinese are trying to get ahead of us by experimenting without sufficient knowledge. They'll continue to experiment. They'll not only destroy themselves, but the whole planet earth and probably the whole solar system in the process.

I'm moving to mars.
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  消费比高吗 ? - 能够实战使用吗 ?  /无内容 - 历经风浪的老水手 08/17/10 (146)
    能否告知作者背景?  /无内容 - horse625 08/17/10 (176)
    现在很多不入流的大学搞科研反而认真。  /无内容 - dallas 08/17/10 (171)
    红外特征明显,有些难以隐形  /无内容 - 死丢脾气儿 08/17/10 (170)
  不是黑洞,只吸收微波。 - 死丢脾气儿 08/17/10 (185)
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