Photonics Research, 2018, 6 (5): 05000357, Published Online: Aug. 1, 2018
Surface enhanced Raman scattering of gold nanoparticles aggregated by gold-nanofilm-coated nanofiber
Abstract
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 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.
Chang Cheng, Juan Li, Hongxiang Lei, Baojun Li. Surface enhanced Raman scattering of gold nanoparticles aggregated by gold-nanofilm-coated nanofiber[J]. Photonics Research, 2018, 6(5): 05000357.