Magnetic-plasmonic Ni@Au core-shell nanoparticle arrays and their SERS properties

  1. Lu WangORCID Logo,
  2. Zuobin WangORCID Logo,
  3. Li Li,
  4. Jingran Zhang,
  5. Jinyun Liu,
  6. Jing Hu,
  7. Xiaomin Wu,
  8. Zhankun Weng,
  9. Xueying Chu,
  10. Jinhua Li and
  11. Zhongliang Qiao

Submitting author affiliation: Changchun University of Science and Technology, Changchun, China

Beilstein Arch. 2019, 2019120. doi:10.3762/bxiv.2019.120.v1

Published 15 Oct 2019

  • Preprint

Abstract

In this paper, large-area magnetic-plasmonic Ni@Au core–shell nanoparticle arrays (NPAs) with tunable compositions were successfully fabricated by direct laser interference ablation (DLIA) incorporated with thermal dewetting method. The magnetic properties of the Ni@Au core–shell NPAs were analyzed and the saturation magnetization (Ms) of the Ni80@Au20 nanoparticles was found higher than that of nickel-only nanoparticles with the same diameter. The surface enhanced Raman scattering (SERS) property of the Ni@Au core–shell NPAs was then examined using the Rhodamine 6G (R6G) as a Raman reporter molecule and a SERS enhancement factor of 2.5×106 was achieved on the Ni50@Au50 NPA substrate, which was of 9 times higher than that for Au nanoparticles with the same size distribution. It was due to the enhanced local surface plasmon resonance (LSPR) between the ferromagnetic Ni cores and the surface polariton of Au shells of each nanoparticle. The fabrication of the Ni@Au core–shell NPAs with different compositions offers a new avenue to tailor the optical and magnetic properties of the nanostructured films for chemical and diagnostic applications.

Keywords: surface enhanced Raman scattering; magnetic-plasmonic nanoparticles; core-shell nanoparticles; ferromagnetic nanoparticles.

Supporting Information

Format: DOCX Size: 3.3 MB Download

How to Cite

When a peer-reviewed version of this preprint is available in the Beilstein Journals, this information will be updated in the information box above. If no peer-reviewed version is available, please cite this preprint using the following information:

Wang, L.; Wang, Z.; Li, L.; Zhang, J.; Liu, J.; Hu, J.; Wu, X.; Weng, Z.; Chu, X.; Li, J.; Qiao, Z. Beilstein Arch. 2019, 2019120. doi:10.3762/bxiv.2019.120.v1

Download Citation
Download RIS (Reference Manager) Download BIB (BIBTEX)

© 2019 Wang et al.; licensee Beilstein-Institut.
This is an Open Access article under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0). Please note that the reuse, redistribution and reproduction in particular requires that the authors and source are credited.
The license is subject to the Beilstein Archives terms and conditions: (https://www.beilstein-archives.org/xiv/terms)

Other Beilstein-Institut Open Science Activities

Logo
Logo
Logo
Symposia