Navigation Links
Scientists create artificial mini 'black hole'
Date:6/3/2010

Chinese researchers have successfully built an electromagnetic absorbing device for microwave frequencies. The device, made of a thin cylinder comprising 60 concentric rings of metamaterials, is capable of absorbing microwave radiation, and has been compared to an astrophysical black hole (which, in space, soaks up matter and light).

The research published today, Thursday, 3 June, in New Journal of Physics (co-owned by the Institute of Physics and German Physical Society), shows how the researchers utilised the special properties of metamaterials, a class of ordered composites which can distort light and other waves.

Qiang Cheng and Tie Jun Cui of the State Key Laboratory of Millimeter Waves at Southeast University in Nanjing, China, designed and fabricated their absorbing device, officially called an "omnidirectional electromagnetic absorber", using 60 strips of circuit board arranged in concentric layers coated in copper. Each layer is imprinted with alternating patterns, which resonate or don't resonate in electromagnetic waves.

The designed device can trap and absorb electromagnetic waves coming from all directions by spiraling the radiation inwards and converting its energy into heat with an absorption rate of 99%. Hence it behaves like an "electromagnetic black body" or an "electromagnetic black hole".

At the moment, the device only works with microwaves, but the researchers are planning to develop a black hole for visible light next.

The current results could find some applications in microwaves. As the researchers write, "The good agreement between theoretical and experimental results has shown the excellent ability for metamaterials as the candidate to construct artificial omnidirectional absorbing devices.

"Since the lossy core can transfer electromagnetic energies into heat energies, we expect that the proposed device could find important applications in thermal emitting and electromagnetic-wave harvesting."


'/>"/>

Contact: Lena Weber
lena.weber@iop.org
44-207-470-4896
Institute of Physics
Source:Eurekalert

Related biology technology :

1. Gladstone scientists uncover potential mechanism of memory loss in Alzheimers disease
2. Three Studies by Independent Scientists Highlighting Pressure Cycling Technology (PCT) to be Presented this Week at the British Mass Spectrometry Societys 29th Annual Meeting
3. Social Network for Scientists Marks Ten Years Online
4. Scientists synthesize memory in yeast cells
5. Scientists synthesize memory in yeast cells
6. University of Leicester scientists discover technique to help friendly bacteria
7. Scientists discover how cancer may take hold
8. Yale scientists make 2 giant steps in advancement of quantum computing
9. New Scientists Boost Disease-based Research at Boston Biomedical Research Institute
10. Scientists say sabercat bit like a pussycat
11. New Corporate Website Launched - Focus on Life Scientists, Flow Cytometrists, & Clinicians
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/24/2017)... ... February 24, 2017 , ... ... be safely completed in an ambulatory surgery center (ASC) with satisfactory clinical and ... previous two-year TDR studies. , Jake Lubinski, president of AxioMed, commented on ...
(Date:2/24/2017)... Tenn. , Feb. 24, 2017 ... ("Provectus" or the "Company"), a clinical-stage oncology and ... regarding the deadline to participate in its previously ... units, consisting of shares of common stock and ... and holders of listed warrants. ...
(Date:2/24/2017)... , Feb. 24, 2017  Driven by ... biotechnology are now the fastest growing categories, finds ... Specialty Actives in Personal Care: Multi-regional Market Analysis ... and management consulting firm Kline. "Biotechnology ... that make them more effective for skin and ...
(Date:2/24/2017)... China Biologic Products, Inc. (NASDAQ: CBPO) ("China Biologic" ... in China, today announced its financial results for the fourth ... Quarter 2016 Financial Highlights Total sales ... RMB terms, or increased by 13.6% in USD terms to ... 2015. Gross profit increased by 13.3% to ...
Breaking Biology Technology:
(Date:2/14/2017)...  Wake Forest Baptist Medical Center today announced Julie Ann ... officer (CEO). Freischlag joins the medical center on May ... M.D., who last year announced that he would transition ... leading it since 2008.   As CEO, ... Baptist,s academic health system, which includes Wake Forest School ...
(Date:2/13/2017)... Former 9/11 Commission border counsel and Special Counsel to ... of Identity Strategy Partners, LLP, today releases the following ... Protecting the Nation From Foreign Terrorist Entry Into the ... Trump,s ,Travel Ban, Executive Order gains more notoriety and ... ban, it is important that our national discourse regain ...
(Date:2/9/2017)... 9, 2017 The biomass boiler market report ... biomass boiler market globally in terms of revenue (US$ ... The market for biomass boilers has been segmented on ... and country/region. The market based on feedstock type, has ... biogas & energy crops, urban residues, and others. On ...
Breaking Biology News(10 mins):