Chinese scientists-"artificial black hole controversy

<p> Purdue University Professor theoretical assumptions, Southeast University experts completed preliminary experimental Chinese scientists made into "artificial black hole" <wbr> </ p> <p> The <wbr> Beijing News "new knowledge weekly recently, Southeast University, two .scientists in an article entitled "hyper-material electromagnetic black hole paper attracted the attention of the scientific community. </ p> New Scientist" reported the matter, said "the Earth's first absorb light made of black holes." 15 October, the journal .nature scientists also to "develop portable black hole" in the name of this study. This forthcoming papers describe the Chinese scientists achieving the previous Purdue University Professor for capturing all the light of the "black hole" of the desktop, for the first time realized .by hyper-material can absorb all microwave appliances, in accordance with its subsequent development, once it can absorb all of the Sun, you will be able to effectively improve solar technology. This thesis in solar technology, Astrophysics and hyper-material research raises a .number of different reactions, and controversial. <wbr> <wbr> <wbr> (The "Chinese scientists create artificial black hole" of the device. In the box to use the graphics they both Hyper-material structure.) <wbr> 1 ."black hole" discussions <p> Big named "electromagnetic wave absorber" </ p> <p> <wbr> This paper consists of Southeast University State Key Laboratory of millimeter wave two scientists Cui tiejun and Cheng Qiang wrote, in temporary storage to .be published scientific papers arXiv website. </ p> <p> <wbr> </ p> <p> "How likely is a black hole? if you really can build out an artificial black hole, as early as the Nobel Prize! ."a Chinese physicists in listening the study said. </ p> While others have seen scientific papers, papers that appear in all the" black hole ", are no quotes around it, this could be misleading. <p> <wbr> < ./ p> <p> In this essay that traditionally, black hole is a huge gravitational field of space, in accordance with the general theory of relativity, it will absorb light, everything included. </ p> But the author has done is to .use hyper-material in the electromagnetic field simulation of a "black hole". <p> <wbr> </ p> <p> In response to a reporter on the "black hole" is a term used by the query, the paper .first author Cheng Qiang explains: "this device really is not a true sense of the gravity of a black hole, but it is the regulation of the electromagnetic wave to similar effect, I think it can be understood as a strong attraction of electromagnetic devices. .</ p> "However, he also said, you can put this device as a" black body ". All objects will absorb and radiate electromagnetic waves (visible electromagnetic wave is the light). Electromagnetic radiation out in each band will have different profiles ., this phenomenon is called radiation. In order to study the law, physicists defines an ideal of absolute objects - bold, as heat radiation study of standard objects. <p> <wbr> </ p> <p> Black body can absorb all .exposure to it that the presence of the electromagnetic wave, in the dark, light reflection or transmission cannot be. </ p> The universe does not exist in absolute terms in bold, the nearest black body exists, it is a cosmic black hole. .<p> <wbr> </ p> <p> According to general relativity, the black hole of great quality and warp space, light and other substances can escape from the gravitational field. </ p> Of course, if we simply black .holes be understood as "not only into the light", the study of Southeast University implements such similar "black hole" effect, although the so-called "black hole", and the real gravitational field of a black hole. <p> < .wbr> </ p> <p> 2 design principles </ p> <p> Let light distortion with clustered to nuclear </ p> <p> <wbr> </ p> <p> This experiment, based on the recent .United States two professors published a hypothesis. </ p> In July this year, the United States Purdue University two professors na SEO pimanov (EvgeniiNarimanov) and kilday kushev (AlexanderKildishev) in the application of physical review published a very creative theory assumes that the .optical black hole: Broadband omnidirectional light absorber. They imagined a can take advantage of hyper-material absorption "bold", through data analog display, it can achieve high efficiency absorption. <p> <wbr> </ p> <p> " .We mean and black hole a similar effect, but not the same phenomenon. </ p> "Two authors in this interview, referred to. In the papers, they wrote: from application to optical Quantum dynamics, in modern science and engineering," .bold "radiation concept provides a great help. However, there is no material can all angles all the wavelengths of light, for 100% absorption. <p> <wbr> </ p> <p> In the gravitational field of a black hole ., giant and temporal distortion, the quality of the light and the other materials along the twisting of temporal and spatial rotation to go into the depths of the black hole. </ p> The two scientists borrowed the optical gravitational field black hole distortion of the .principle of an optical analogy. They envisaged a novel design of light absorption, so that the light at the theoretical level, in the artificial device distort and enter the Center. They calculated through the hyper-material design a cylindrical structure, its central nucleus surrounded .by concentric enclosures, and allows the light to the key factors in bending is the device shell's dielectric constant. Dielectric constant that represents the capabilities of an insulation coefficient, affect the electromagnetic waves of electric components, if the relevant design makes material changes of the dielectric .constant of the progressive, you can make light from outer to the central nucleus of progressively distorted. By calculation, they got a on any direction, the wavelength of the light absorption of up to 100% of the way. <p> <wbr> .</ p> <p> This essay was published less than 4 months, Southeast University researchers to achieve this design step 1: "prior theoretical work, we offer the first case the microwave frequencies in the electromagnetic field experiment of black holes. </ .p> "They wrote in the paper. <p> <wbr> </ p> <p> <wbr> a </ p> <p> <wbr> <wbr> <wbr> b </ p> <p> .<wbr> <wbr> </ p>> <wbr> c <p> <wbr> D <wbr> <wbr> incidence angle different microwave can be this "artificial black hole device absorption off. </ p> Ac is a .theoretical calculation, bd is the actual measurement results, both with very well. <p> <wbr> </ p> <p> 3 material characteristics </ p> <p> "Stealth" materials and ruffled </ p> <p .> <wbr> </ p> <p> To achieve this design, the key is to design a dielectric constant energy with radial changes of special materials. </ p> Southeast University researchers used at present materials science community as many as "hyper .-material "for the experiment. <p> <wbr> </ p> <p>" Hyper-material from many subwavelength units do periodic arrangement, and chemical synthesis of materials are very different and, therefore, also known as artificial electromagnetic materials .. </ p> "Currently, hyper-material in many new areas of work. Cheng strongly that their experiment design adopted can occur a gradient of refraction. It's a lot of new conceptual design as" camouflage clothing "in the application. Cheng said ., Professor at Purdue's published papers until they have been in a similar study. <p> <wbr> </ p> <p> Early this year, Cui tiejun has worked with United States Duke University Professor cooperation in science on Bewitched. </ .p> They take advantage of hyper-material in the successful development of microwave section cylindrical "camouflage clothing", and make improvements within the band. Will this "stealth" clothed clothing a target on the ground, also the target of the "disappeared" .. <p> <wbr> </ p> <p> This time they in the Purdue Research Foundation, to structure complex circuit boards do support unit, use the hyper-material design out 60-coaxial ring, concentric rings from one to another .of concentric circles, the characteristics of the circuit board and outer 40 concentric rings up device shell, internal 20 concentric rings constitute the absorber. </ p> Electromagnetic wave irradiation to the appliance, are led into the Center core, no longer out of it .. If the device can absorb visible light, it will be a darker. However, they only in microwave level achieved this purpose. <p> <wbr> </ p> <p> 4 controversy </ p> <p> Microwave does .not equal light </ p> <p> <wbr> </ p> <p> Experimental Chinese scientists, kilday timashev and NA-Kumanovo evaluation road, although the Chinese scientists used microwave materials in negative refractive index, and so there are a .lot of research to achieve the imaginary not difficult, but they still because it so quickly was achieved and was surprised. </ p> <p> <wbr> </ p> <p> On the other hand, they also indicated that the .thesis still exist some problems. </ p> Their papers have been a lot of numerical simulation, missing is experimental. Chinese papers there is no need for additional numerical simulation and experimental measurements of key is still lacking. Second, "microwave - an important .use of the Sun acquisition? "kilday troshev stressed that the papers have exaggerated, overestimated only in microwave level implementation of the" black hole "in the role of solar energy applications. To create a" black hole "in the optical techniques have more challenges .. <p> <wbr> </ p> <p> Although the microwave and visible light is electromagnetic wave, however, to achieve a assimilation and microwave in all-optical absorption of all, I still have a very big difference. </ .p> Shanghai Science and technology press Edit, astrophysics, Sun is where explained that the microwave is e (current) back and forth motion of the outcomes, microwave, and as long as the oscillation circuit can be rather light (photons), is the .atom the electron level transitions, infrared / visible / UV, electronic transition to release energy to get, so their absorption mechanism is also very different. <p> <wbr> </ p> <p> "This and the black hole of bandwidth ., we're on the construction of artificial materials for change, but microwave and optical absorption mechanism is the same. </ p> "Facing the challenge, Cheng Qiang interview, in response to that. Their one month before the completion of a microwave .experiment, the ongoing experiment of optical wavelengths, you may also need a few months, "could you prepare them also it is difficult to say." <p> <wbr> </ p> <p> Sunlight is a full-band of .light, in the present solar technology, has a lot to high efficiency absorption optical material, but to the whole band absorption of technology but it is very difficult, therefore only the Sun acquisition, this study has yet to break through the most critical step, .and Sun's acquisition in the entire solar technology is just the easy step. </ p> Current solar energy technology, the biggest problem lies in the photoelectric conversion. This study does not address this issue. <p> <wbr> </ p> .<p> Nevertheless, in the microwave band out of the controversial first step, perhaps the future of solar energy technology breakthrough. </ p> <p> Reporter Kim Yu this version of the picture are taken from the hyper-material electromagnetic black hole ."</ p>.