Surface enhanced Raman scattering of crystal violet

Robin Jones, Tim Batten, Brian Smith, Alejandro V. Silhanek, Daniel Wolverson, Ventsislav Valev

Research output: Chapter or section in a book/report/conference proceedingChapter in a published conference proceeding

1 Citation (SciVal)
164 Downloads (Pure)

Abstract

Despite the ubiquity of Raman spectroscopy, fluorescence, poor signal strength and photobleaching pose a significant challenge to researchers in the biomedical field. Here, we demonstrate a 17-fold signal enhancement in Raman spectra of crystal violet via surface-enhanced Raman scattering (SERS). The SERS substrate was fabricated by electron beam lithography (EBL); the nanostructured surface was an array of G-shaped elements made of Au on SiO2/Si. In addition to the SERS spectra, finite-difference time-domain simulations were performed to illustrate the distribution of electric-field hot-spots on the SERS substrate. The electric-field hot-spots were prominent at the vertices and edges of the nanostructured G-shaped motifs. The results presented here demonstrate that EBL is a high-end choice for SERS substrate fabrication that opens the way for more complex Raman spectroscopies, for instance involving nonlinear optics or chiral analytes.
Original languageEnglish
Title of host publicationNonlinear Optics and Applications XII
Subtitle of host publicationNonlinear Optics and Applications XII
EditorsMario Bertolotti, Anatoly V. Zayats, Alexei M. Zheltikov
Chapter11770
Number of pages7
Volume11770
EditionMay
ISBN (Electronic)9781510643741
DOIs
Publication statusPublished - 18 Apr 2021

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11770
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Funding

V.K.V. acknowledges support from the Royal Society through the University Research Fellowships and the Royal Society grants RGF\EA\180228, and funding from the Engineering and Physical Sciences Research Council (EPSRC) grant EP/T001046/1. D.W. acknowledges support from the EPSRC with Renishaw Plc 2019 iCASE award EP/T517495/1.

Keywords

  • Crystal violet
  • Electron beam Lithography
  • Finite-difference time-domain simulation
  • Surface enhanced Raman scattering

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Fingerprint

Dive into the research topics of 'Surface enhanced Raman scattering of crystal violet'. Together they form a unique fingerprint.

Cite this