Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 6, Issue 11, Pages 7991-7995Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am502793d
Keywords
surface-enhanced Raman scattering; localized surface plasmon resonance; Ag-nanoparticle assembly; bi-nanoring array
Funding
- National Basic Research Program of China [2013CB934304]
- NSFC [51101151, 11274312, 11175204]
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Nano-petri-dish array assisted glancing angle Ag-sputtering was reported to synthesize Ag-nanoparticle (Ag-NP) assembled bi-nanoring arrays as surface-enhanced Raman scattering (SERS) substrates. By manipulating the sputtering-Ag duration, the gaps between the Ag-NPs in the bi-nanorings are tunable to acquire optimal electromagnetic field enhancement, and the ordered bi-nanoring arrays ensure excellent reproducibility for Raman measurement. Such as-fabricated Ag-NPs assembled nanoring arrays exhibit excellent SERS performance, not only 1 X 10(-12) M rhodamine 6G has been identified, but also polychlorinated biphenyls with a low concentration down to 1 X 10(-9) M has been recognized, showing great potential in the detection of trace organic pollutants in the environment.
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