How Far Are We from Making Metamaterials by Self‐Organization? The Microstructure of Highly Anisotropic Particles with an SRR‐Like Geometry |
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Authors: | Dorota A Pawlak Sebastian Turczynski Marcin Gajc Katarzyna Kolodziejak Ryszard Diduszko Krzysztof Rozniatowski Julita Smalc Irina Vendik |
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Affiliation: | 1. Institute of Electronic Materials Technology (ITME) ul. Wolczynska 133, 01‐919 Warsaw (Poland);2. Department of Materials Science and Engineering Warsaw University of Technology ul. Woloska 141, 02‐507 Warsaw (Poland);3. St.‐Petersburg Electrotechnical University Department of Microelectronics & Radio Engineering 5, Prof. Popov Str., 197376 St‐Petersburg (Russia) |
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Abstract: | Metamaterials offer new unusual electromagnetic properties, which have already been demonstrated, and many postulated new functionalities are yet to be realized. Currently, however, metamaterials are mostly limited by narrow band behavior, high losses, and limitation in making genuinely 3D materials. In order to overcome these problems an overlap between metamaterial concepts and materials science is necessary. Engineered self‐organization is presented as a future approach to metamaterial manufacturing. Using directional solidification of eutectics, the first experimental realization of self‐organized particles with a split‐ring resonator‐like cross section is demonstrated. This unusual morphology/microstructure of the eutectic composite has a fractal character. With the use of TEM and XRD the clear influence of the atomic crystal arrangement on the microstructure geometry is presented. The materials obtained present very high anisotropy and can be obtained in large pieces. Metallodielectric structures can be created by etching and filling the space with metal. The next steps in the development of self‐organized materials exhibiting unusual properties are discussed. |
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Keywords: | eutectic metamaterials self‐organization SRR SrTiO3‐TiO2 |
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