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Related Experiment Video

Updated: Jul 13, 2026

Surface Enhanced Raman Spectroscopy Detection of Biomolecules Using EBL Fabricated Nanostructured Substrates
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Published on: March 20, 2015

Surface-enhanced Raman spectroscopy using silver nanoparticles on a precoated microscope slide.

Ying-Sing Li1, Jingcai Cheng, King-Thom Chung

  • 1Department of Chemistry, University of Memphis, Memphis, TN 38152, USA. yingli@memphis.edu

Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
|July 17, 2007
PubMed
Summary

Researchers developed a novel nano silver substrate for enhanced Raman scattering (SERS) analysis. This substrate effectively detected N1'-ethyl indirubin monooxime (EIM), a potential pharmaceutical, revealing its interaction with the silver surface.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Analytical Chemistry

Background:

  • Surface-enhanced Raman scattering (SERS) is a powerful technique for molecular detection.
  • Developing stable and sensitive SERS substrates is crucial for various applications.
  • Indium tin oxide (ITO) coated slides offer a versatile platform for nanomaterial deposition.

Purpose of the Study:

  • To create a nano silver particle-coated substrate for SERS.
  • To investigate the SERS properties of N1 -ethyl indirubin monooxime (EIM).
  • To evaluate the substrate's capability for detecting pharmaceutical compounds.

Main Methods:

  • Chemical reduction method for depositing nano silver particles.
  • Fabrication of a substrate using indium tin oxide precoated frosted microscope slides.
  • SERS measurements of EIM, Crystal Violet (CV), and p-nitrobenzoic acid (PNBA).
  • Surface characterization using Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM).
  • Elemental composition analysis using Edex and X-ray element scanning.

Main Results:

  • Successful deposition of nano silver particles on the ITO-coated substrate.
  • Obtained SERS spectra for EIM, indicating interaction via lone pair electrons of oxime nitrogen atoms.
  • Demonstrated the substrate's capability to detect EIM, CV, and PNBA.
  • Characterized the substrate's surface morphology and elemental composition.

Conclusions:

  • The developed nano silver substrate is effective for SERS analysis.
  • EIM shows potential for pharmaceutical applications, with its interaction mechanism elucidated by SERS.
  • The substrate demonstrates broad applicability for detecting various molecules using SERS.