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Optics of Nanostructures: Science, Technology, Applications Sergey V. Gaponenko Institute of Molecular and Atomic Physics National Academy of Sciencs of Belarus
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Institute of Molecular and Atomic Physics Established in 1992 (separated from the Inst. Physics) Staff: 160 total (30 Dr. of Sci, 70 Ph.D) Research topics: Plasma physics and atomic spectroscopy Molecular spectroscopy Photobiophysics Physics of nanostructures 12 research laboratories Journal of Applied Spectroscopy publisher (since 1964)
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Basic Principles Photonic crystal ideology Photonic crystal ideology Quantum size effects in semiconductor nanocrystals Quantum size effects in semiconductor nanocrystals Surface enhanced optical processes Surface enhanced optical processes
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Photonic crystals
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Nanoporous alumina developed at BSUIR
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Anisotropic light scattering in nanoporous materials Lutich, Gaponenko, Gaponenko, Sokol, APL, 2003 in press
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Quantum size effects in semiconductor nanocrystals
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Light convertor for Si photodetectors Main advantage versus organic luminophores: high photostability
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Principal publications A. Kapitonov, A. Stupak, E. Petrov, S. Gaponenko, A.Rogach, A. Eychmueller. Photoluminescence of CdTe nanocrystals in aqueous solution. J. Phys. Chem. 103, 10109 (1999). M.Artemyev, A.Bibik, L.Gurinovich, S.Gaponenko, U.Woggon. Evolution from individual to collective electron states in a quantum dot ensemble. Phys. Rev. B 60,1504-1506 (1999) M. Artemyev, L. Gurinovich, A. Stupak, S. Gaponenko. Luminescence of CdS Nanoparticles Doped with Mn. Phys. stat. sol. (b) 224, 191 (2001)
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Surface enhanced optical processes Enhanced Raman scattering Enhanced Photoluminescence
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Malashkevich et al, in press
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High-sensitive SERS molecular analysys High-sensitive SERS molecular analysys Gaponenko, Gaiduk, Kulakovich et al. JETP Lett. 2001, 74, 324.
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Basic Technologies Electrochemical etching Electrochemical etching Colloidal chemistry Colloidal chemistry Sol-gel processes Sol-gel processes High-energy plasma flow processes High-energy plasma flow processes
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Nanoporous alumina BSUIR
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CdSe nanocrystalsСdTe nanocrystals CdSe nanocrystalsСdTe nanocrystals Gaponenko et al. Gaponenko et al. J. Appl. Phys. 1995, JETP lett. 1998 Gaponenko et al. Gaponenko et al. J. Appl. Phys. 1995, JETP lett. 1998 In cooperation with Belarussian Sate University
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Colloidal crystals Petrov, Bogomolov, Kalosha, Gaponenko, PRL 1998 Colloidal crystals Petrov, Bogomolov, Kalosha, Gaponenko, PRL 1998 cooperation with Russian Academy of Sciences and Inst. Powder Metallurgy
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Metal colloids
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High-energy plasma flow processes discharge duration— 100 150 sec; discharge duration— 100 150 sec; peak current— 50 120 kA; peak current— 50 120 kA; plasma velocity— (3 7)x10 6 cm/sec; plasma velocity— (3 7)x10 6 cm/sec; electron density— 10 16 10 18 cm -3 ; electron density— 10 16 10 18 cm -3 ; plasma temperature— 2 4 eV plasma temperature— 2 4 eV
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Regular surface structures formed on silicon wafer
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Tasks Novel luminophores and efficient light emitting devices Novel luminophores and efficient light emitting devices Spectral transformers for silicon solar cells and photodetectors Spectral transformers for silicon solar cells and photodetectors Ultrasensitive chemical analysis Ultrasensitive chemical analysis Si surface processing Si surface processing
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Optical data coding and security systems
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Spectral portraits of numbers
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Current projects National program “Electronics” National program “Electronics” National program “Nanotechnologies” National program “Nanotechnologies” National program “Plasma dynamics” National program “Plasma dynamics” National Basic Res. Fnd. Projects (5) National Basic Res. Fnd. Projects (5) International INTAS projects (2 projects) International INTAS projects (2 projects) NATO for Peace project NATO for Peace project Int. Sci. Techn. Center project Int. Sci. Techn. Center project Volkswagen Shiftung project Volkswagen Shiftung project Cooperaton agreement with Swiss Sherer Institute Cooperaton agreement with Swiss Sherer Institute European network of excellence “Nanophotonics” European network of excellence “Nanophotonics”
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