Surface enhanced Raman scattering of gold nanoparticles aggregated by gold-nanofilm-coated nanofiber

Published on 2018-04-12T21:21:54Z (GMT) by
Aggregation of metal nanoparticles plays an important role in surface enhanced Raman scattering (SERS). Here, a strategy of dynamically aggregating/releasing gold nanoparticles is demonstrated using a gold-nanofilm coated nanofiber, with the assistance of enhanced optical force and plasmonic photothermal effect. Strong SERS signals of rhodamine 6G (R6G) are achieved at the hotspots formed in the inter-particle and film-particle nanogaps. The proposed SERS substrate was demonstrated to have a sensitivity of 10¯¹² M, reliable reproducibility and good stability.

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Cheng, Chang; Li, Juan; Lei, Hong; Li, Baojun (2018): Surface enhanced Raman scattering of gold nanoparticles aggregated by gold-nanofilm-coated nanofiber. The Optical Society. Collection.