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Researchers at Technical University Release New Data on Radio Science

June 13, 2014

By a News Reporter-Staff News Editor at Science Letter -- Researchers detail new data in Science. According to news originating from Munich, Germany, by NewsRx correspondents, research stated, "The imaging capability of nonideal double negative metamaterial slabs excited by arbitrarily oriented electric or magnetic dipoles is investigated. A dipole oriented parallel to the interface of the slab excites transverse electric and transverse magnetic modes simultaneously, which are transmitted unequally by the slab if either the slab's relative permittivity (epsilon(r)) or permeability ((r)) or both are perturbed from the ideal case, i.e., epsilon(r)=(r)=-1 for a slab in vacuum."

Our news journalists obtained a quote from the research from Technical University, "Approximations in the electrostatic limit, valid for modes with large wave numbers, fail to predict this phenomenon, and more accurate analysis of the field distribution in the vicinity of the image plane behind a nonideal slab becomes important. By expressing the fields in terms of a onedimensional Hankel transform in the spectral domain and using an adaptive GaussKronrod quadrature, a tool for evaluating the spatial field intensity in the vicinity of the image plane behind the slab is developed. The calculated field intensities reveal that a double negative slab does not focus in the threedimensional space and is only capable of twodimensional imaging."

According to the news editors, the research concluded: "Key Points Imaging of arbitrarily oriented dipole sources by a double negative superlens Unequal transmission of TE and TM portions of the fields."

For more information on this research see: Imaging by a double negative metamaterial slab excited with an arbitrarily oriented dipole. Radio Science, 2014;49(1):68-79. Radio Science can be contacted at: Amer Geophysical Union, 2000 Florida Ave NW, Washington, DC 20009, USA. (American Geophysical Union -; Radio Science -

The news correspondents report that additional information may be obtained from A.E. Culhaoglu, Technical University of Munich, Inst Nanoelect, D-80290 Munich, Germany. Additional authors for this research include A.V. Osipov and P. Russer (see also Science).

Keywords for this news article include: Munich, Europe, Germany, Science

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Source: Science Letter

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