Optics of Nanostructures: Science, Technology, Applications Sergey V. Gaponenko

1. Optics of Nanostructures:Science, Technology, ApplicationsSergey V. Gaponenko Institute of Molecular and Atomic PhysicsNational Academy of Sciencs of Belarus

2. 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)

4. Basic Principles • Photonic crystal ideology • Quantum size effects in semiconductor nanocrystals • Surface enhanced optical processes

5. Photonic crystals

8. Nanoporous alumina developed at BSUIR

9. Anisotropic light scattering in nanoporous materialsLutich, Gaponenko, Gaponenko, Sokol, APL, 2003 in press

11. Quantum size effects in semiconductor nanocrystals

17. Light convertor for Si photodetectorsMain advantage versus organic luminophores:high photostability

18. 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)

21. Surface enhanced optical processes Enhanced Raman scattering Enhanced Photoluminescence

22. Malashkevich et al, in press

25. High-sensitive SERS molecular analysysGaponenko, Gaiduk, Kulakovich et al. JETP Lett. 2001,74,324.

26. Basic Technologies • Electrochemical etching • Colloidal chemistry • Sol-gel processes • High-energy plasma flow processes

27. Nanoporous aluminaBSUIR

28. CdSe nanocrystals СdTenanocrystals Gaponenko et al. Gaponenko et al. J. Appl. Phys. 1995, JETP lett. 1998 In cooperation with Belarussian Sate University

29. Colloidal crystalsPetrov, Bogomolov, Kalosha, Gaponenko, PRL 1998cooperation with Russian Academy of Sciencesand Inst. Powder Metallurgy

30. Metal colloids

31. High-energy plasma flow processes • discharge duration — 100  150 sec; • peak current — 50  120 kA; • plasma velocity — (3  7)x106 cm/sec; • electron density — 1016 1018 cm-3; • plasma temperature — 2  4 eV

32. Regular surface structures formed on silicon wafer

33. Tasks • Novel luminophores and efficient light emitting devices • Spectral transformers for silicon solar cells and photodetectors • Ultrasensitive chemical analysis • Si surface processing

34. Optical data coding and security systems

35. Spectral portraits of numbers

36. Current projects • National program “Electronics” • National program “Nanotechnologies” • National program “Plasma dynamics” • National Basic Res. Fnd. Projects (5) • International INTAS projects (2 projects) • NATO for Peace project • Int. Sci. Techn. Center project • Volkswagen Shiftung project • Cooperaton agreement with Swiss Sherer Institute • European network of excellence “Nanophotonics”