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Large-scale synthesis of gold dendritic nanostructures for surface enhanced Raman scattering.
- Source :
- CrystEngComm; 6/14/2015, Vol. 17 Issue 22, p4200-4204, 5p
- Publication Year :
- 2015
-
Abstract
- Au dendritic nanostructures with sharp tips have been successfully fabricated on a large scale by reducing potassium tetrachloroaurate (KAuCl<subscript>4</subscript>) with hydrofluoric acid on a Si wafer locally processed using a focused ion beam (FIB) technique. Surface enhanced Raman scattering (SERS) with Rhodamine B (RhB) molecules on a nanostructured substrate is greatly enhanced, originating from “hot-spots” located at the nanogaps between adjacent branches on dendritic nanostructures. Furthermore, Au dendritic nanostructures as recyclable SERS substrates exhibit an ultrasensitive response to the pico-scale concentration of probe molecules. This work shows that greatly enhanced SERS substrates with a high degree of reliability and reproducibility can be fabricated at a relatively low cost, which could help SERS to realize its full potential as a very sensitive tool for trace analysis. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14668033
- Volume :
- 17
- Issue :
- 22
- Database :
- Complementary Index
- Journal :
- CrystEngComm
- Publication Type :
- Academic Journal
- Accession number :
- 102889187
- Full Text :
- https://doi.org/10.1039/c5ce00407a