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Nanotechnology. 2010 Jan 15;21(2):025502. doi: 10.1088/0957-4484/21/2/025502. Epub 2009 Dec 3.

The preparation of silver nanoparticle decorated silica nanowires on fused quartz as reusable versatile nanostructured surface-enhanced Raman scattering substrates.

Author information

1
Institute of Optoelectronic Sciences, National Taiwan Ocean University, Keelung 202, Taiwan. hjsspin@mail.ntou.edu.tw

Abstract

We introduce a platform, comprised of silver nanoparticle decorated silica nanowires (SiONWs) dispersed on fused quartz substrates, for high sensitivity surface-enhanced Raman scattering (SERS) measurements using both frontal (through the analytes) and back-face (through the transparent substrate) excitation. Quasi-quantitative SERS performances on the specialized substrate, vis-à-vis a silver deposited bare fused quartz plate, showed: (i) the suitability of the Ag modified SiONW substrate for frontal as well as back-face excitation; (ii) a wider detection range with high sensitivity to Rhodamine 6G; and (iii) good underwater metal-oxide adhesion of the specialized substrates. Capable of surviving ultrasonic cleaning, the substrate introduced is one of the few reusable low-cost Ag-based nanostructured SERS substrates, requiring only a simple silver reload process (the silver mirror reaction).

PMID:
19955621
DOI:
10.1088/0957-4484/21/2/025502
[Indexed for MEDLINE]

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