Self- organized eutectic microstructures for photonic crystals and metamaterials

Dorota A. Pawlak 1Katarzyna B. Kołodziejak 1Sebastian Turczynski 1Krzysztof Rozniatowski 2Ryszard Diduszko 1Jaroslaw Kisielewski 1Marcin Kaczkan 3Michal Malinowski 3Tadeusz Łukasiewicz 1

1. Institute of Electronic Materials Technology (ITME), Wólczyńska 133, Warszawa 01-919, Poland
2. Warsaw University of Technology, Faculty of Materials Science and Engineering (InMat), Wołoska 141, Warszawa 02-507, Poland
3. Warsaw University of Technology, Institute of Microelectronics & Optoelectronics (imio), Koszykowa 75, Warszawa 00-662, Poland

Abstract

There are already many sophisticated methods for obtaining photonic crystals and metamaterials. A simple way could be to obtain a material by self-organization. A very promising method for growth of self-organized micro- and nanostructures is based on directional solidification of eutectics. Eutectics are special materials which are both a MONOLITH and a MULTIPHASE MATERIAL.[1] Eutectics have two kinds of properties: additive and product properties. The additive properties depend on spatial distribution and volume fraction of the phases. The product properties depend on such structural factors as phase size or periodicity. Product propeties can exist in the eutectic but not in the particular phases of the eutectic.[1] The product properties may define metamaterials, since “metamaterials are engineered composites that exhibit superior properties that are not found in nature and not observed in the constituent materials”. The eutectic microstructure can exhibit many geometrical forms. It can be regular-lammelar, regular-rod-like, irregular, complex regular, quasi-regular, broken-lamellar, spiral and globular. The most interesting from the point of view of photonic crystals would be the microstructures with regular shapes, i.e. lamellar and rod-like. For metamaterials applications the other shapes could be also of interest - for example the percolated structures (for giant dielectric constant); or the spiral one for chiral metamaterials. The general overview of the road of eutectics towards photonics as well as new experimental data will be presented.[2]

[1] J. Llorca, and V.M. Orera, Progress in Mat. Sci., 51, 711 (2006).

[2] D. A. Pawlak, K. Kolodziejak, S. Turczynski, J. Kisielewski, K. Rozniatowski, R. Diduszko, M. Kaczkan, M. Malinowski, Chem. Mat., 18, 2450, (2006).

 

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Presentation: Oral at Joint Fith International Conference on Solid State Crystals & Eighth Polish Conference on Crystal Growth, by Dorota A. Pawlak
See On-line Journal of Joint Fith International Conference on Solid State Crystals & Eighth Polish Conference on Crystal Growth

Submitted: 2007-01-19 17:03
Revised:   2009-06-07 00:44