Journal
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
Volume 8, Issue 13, Pages 2774-2779Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.7b00958
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Funding
- JST PRESTO program
- European Research Council (ERC) grant (PLASMHACAT) [280064]
- Research Foundation - Flanders (FWO) [G0B5514N, G081916N, G0259.2N, G045910N, G019711N, 1520915N]
- KU Leuven Research Fund [GOA 2011/03, OT/12/059, IDO/12/008, C14/15/053]
- Belgian Federal Science Policy Office [IAP-VI/27]
- JSPS KAKENHI [JP17H03003]
- FWO for postdoctoral fellowships
- ITN-SUPERIOR [PITN-GA-2009-238177]
- International Ph.D. Projects Program of the Foundation for Polish Science [MPD/2009/1]
- European Research Council (ERC) [280064] Funding Source: European Research Council (ERC)
- Grants-in-Aid for Scientific Research [17H03003] Funding Source: KAKEN
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We reveal nanoscale morphological changes on the surface of a silver nanowire (AgNW) in the conventional surface-enhanced Raman scattering (SERS) measurement condition. The surface morphology changes are due to the surface plasmon-mediated photochemical etching of silver in the presence of certain Raman probes, resulting in a dramatic increase of Raman scattering intensity. This observation indicates that the measured SERS enhancement does not always originate from the as-designed/fabricated structures themselves, but sometimes with contribution from the morphological changes by plasmon-mediated photochemical reactions. Our work provides a guideline for more reliable SERS measurements and demonstrates a novel method for simple and site specific engineering of SERS substrate and AgNW probes for designing and fabricating new SERS systems, stable and efficient TEAS mapping, and single-cell SERS endoscopy.
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