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Epitaxial self-alignment: A new route to hybrid active plasmonic nanostructures |
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| Affiliation: | 1. Changjiang River Scientific Research Institute, Wuhan 430010, China;2. Research Center on Water Engineering Safety and Disaster Prevention of the Ministry of Water Resources, Wuhan 430010, China;3. National Dam Safety Research Center, Wuhan 430010, China;1. School of Mathematics and Statistics, Wuhan University, Wuhan 430072, People’s Republic of China;2. School of Computer and Information Engineering, Jiangxi Agricultural University, Nanchang 330045, People’s Republic of China;3. Department of Economics, The University of Melbourne, Parkville, Victoria 3010, Australia |
| Abstract: | Concepts of lateral ordering of epitaxial semiconductor quantum dots (QDs) are for the first time transferred to hybrid nanostructures for active plasmonics. We review our recent research on the self-alignment of epitaxial nanocrystals of In and Ag on ordered one-dimensional In(Ga)As QD arrays and isolated QDs by molecular beam epitaxy. By changing the growth conditions the size and density of the metal nanocrystals are easily controlled and the surface plasmon resonance wavelength is tuned over a wide range in order to match the emission wavelength of the QDs. Photoluminescence measurements reveal large enhancement of the emitted light intensity due to plasmon enhanced emission and absorption down to the single QD level. |
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