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20 August 2009 Bandgap tuning of photonic crystals on III-V nitride thin films
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Nanophotonics and photonic crystals (PhCs) are emerging as platforms with which highly sensitive biosensor devices can be fabricated. One such device under development by our group is a nano-opto-fluidic fluorescence emission enhancement biosensor that can provide significant increase in photon emission and associated detection limit. The inclusion of tunability of thin film PhCs patterns offers means of adjusting fabrication errors and provides a mechanism for increased device functionality. Therefore, this work aims to provide active tunability of the bandgap of PhC patterns in piezoelectric AlN thin films through piezoelectric deformation. Modeling efforts of bandgap tuning of 'as-drawn' and deformed 1- and 2-D PhC lattice structures, using coupled results from PhC optical behavioral modeling tools such as: MIT Photonic Bands (MPB) and finite element modeling using ANSYS, are discussed. Furthermore, the fabrication process of 1D photonic crystals in AlN will be presented.
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H. Yalamanchili, L. A. Hornak, D. Korakakis, and J. M. Dawson "Bandgap tuning of photonic crystals on III-V nitride thin films", Proc. SPIE 7402, Nanoengineering: Fabrication, Properties, Optics, and Devices VI, 740212 (20 August 2009);

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