期刊
ACS NANO
卷 7, 期 4, 页码 3420-3426出版社
AMER CHEMICAL SOC
DOI: 10.1021/nn400307a
关键词
SERS; ZnO nanocrystals; plasmonic enhancement
类别
资金
- NanoMat by the Ministere de l'enseignement superieur et de la recherche
- Conseil regional Champagne-Ardenne
- Fonds Europeen de Developpement Regional (FEDER) fund
- Conseil general de l'Aube
- Republican Basic Research Foundation of Belarus (Belarus-Ukraine joint project)
- Fund for Fundamental Research of Ukraine [F40.2/068, F41, 1/017, F40.3/040]
- Alexander von Humboldt Foundation
- UTT
- World Federation of Scientists
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.
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