24 January 2013 FDTD analysis of silver-nanoparticles-embedded phase change recording pits
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Proceedings Volume 8782, 2012 International Workshop on Information Storage and Ninth International Symposium on Optical Storage; 878207 (2013) https://doi.org/10.1117/12.2014891
Event: 2012 International Workshop on Information Data Storage and Ninth International Symposium on Optical Storage, 2012, Shanghai, China
Abstract
Super-resolution near-field structure (super-RENS) is a functional structure which can overcome the optical diffraction limit and play an important role in nano scale optical data storage. The resolution enhancement of the scatter-type super- RENS optical disk is related to the localized surface plasmon of silver particles dissociated from the AgOx layer and its near-field interaction with the recording pits in the phase change layer. Recently, a new method for optically synthesizing silver nanoparticles in a phase change matrix has been proposed by our group [Mater. Chem. Phys. 135, 467-473(2012)], which provides a potential approach to forming a more simple plasmonic recording structure than the traditional AgOx-type structure. In this paper, field distribution of silver-nanoparticles-embedded Ge2Sb2Te5 phase change recording pits is numerically analyzed by the finite-difference time-domain (FDTD) method. The optical contrast enhancement capability is confirmed for the optimized recording structures when the pit size is smaller than the optical diffraction limit.
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Jincheng Lin, Jincheng Lin, Huan Huang, Huan Huang, Yang Wang, Yang Wang, Yiqun Wu, Yiqun Wu, "FDTD analysis of silver-nanoparticles-embedded phase change recording pits", Proc. SPIE 8782, 2012 International Workshop on Information Storage and Ninth International Symposium on Optical Storage, 878207 (24 January 2013); doi: 10.1117/12.2014891; https://doi.org/10.1117/12.2014891
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