title: Nonresonant surface-enhanced Raman scattering of ZnO quantum dots with Au and Ag nanoparticles.
abstract: Pronounced 10(4)-fold enhancement of Raman scattering has been obtained for ZnO nanocrystals on substrates coated with 50 nm Ag nanoparticles under nonresonant excitation with a commercial red-emitting laser. This makes feasible beyond 10(-18) mole detection of ZnO nanocrystals with a commercial setup using a 0.1 mW continuous wave laser and can be purposefully used in analytical applications where conjugated nanocrystals serve as Raman markers. For Au-coated surfaces the enhancement is much lower and the heating effects in the course of Raman experiments are pronounced.
authors: Université de Technologie de Troyes, 12 Rue Marie-Curie BP 2060, 10010 Troyes Cedex, France.
authors: Anna
authors: A
authors: Rumyantseva
authors: Sergey
authors: S
authors: Kostcheev
authors: Pierre-Michel
authors: PM
authors: Adam
authors: Sergey V
authors: SV
authors: Gaponenko
authors: Svetlana V
authors: SV
authors: Vaschenko
authors: Olga S
authors: OS
authors: Kulakovich
authors: Andrey A
authors: AA
authors: Ramanenka
authors: Dmitry V
authors: DV
authors: Guzatov
authors: Dmytro
authors: D
authors: Korbutyak
authors: Volodymyr
authors: V
authors: Dzhagan
authors: Alexander
authors: A
authors: Stroyuk
authors: Vitaliy
authors: V
authors: Shvalagin
mesh_terms: D006046:Gold / Q000737:chemistry* / Q000528:radiation effects; D007834:Lasers; D008027:Light; D008422:Materials Testing; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000528:radiation effects; D045663:Quantum Dots; D012542:Scattering, Radiation; D012834:Silver / Q000737:chemistry* / Q000528:radiation effects; D013059:Spectrum Analysis, Raman / Q000379:methods*; D015034:Zinc Oxide / Q000737:chemistry* / Q000528:radiation effects
chemical_list: D012834:Silver; D006046:Gold; D015034:Zinc Oxide