| Literature DB >> 29504760 |
Shu Chen1, Yuejiao Zhang2, Tien-Mo Shih1, Weimin Yang1, Shu Hu2, Xiaoyan Hu2, Jianfeng Li1,2, Bin Ren2, Bingwei Mao2, Zhilin Yang1, Zhongqun Tian2.
Abstract
Plasmon-induced magnetic resonance has shown great potentials in optical metamaterials, chemical (bio)-sensing, and surface-enhanced spectroscopies. Here, we have theoretically and experimentally revealed (1) a correspondence of the strongest near-field response to the far-field scattering valley and (2) a significant improvement in Raman signals of probing molecules by the plasmon-induced magnetic resonance. These revelations are accomplished by designing a simple and practical metallic nanoparticle-film plasmonic system that generates magnetic resonances at visible-near-infrared frequencies. Our work may provide new insights for understanding the enhancement mechanism of various plasmon-enhanced spectroscopies and also helps further explore light-matter interactions at the nanoscale.Keywords: Fano resonance; Plasmon-induced magnetic resonance (PIMR); SERS; dark-field spectrum; hot spots; surface plasmons
Year: 2018 PMID： 29504760 DOI： 10.1021/acs.nanolett.7b04385
Source DB: PubMed Journal: Nano Lett ISSN： 1530-6984 Impact factor: 11.189