Next Article in Journal
Asymmetric Wave Propagation Through Saturable Nonlinear Oligomers
Next Article in Special Issue
Fibre Coupled Photonic Crystal Cavity Arrays on Transparent Substrates for Spatially Resolved Sensing
Previous Article in Journal
Wide-Field OCT Angiography at 400 KHz Utilizing Spectral Splitting
Article Menu

Export Article

Open AccessArticle
Photonics 2014, 1(4), 380-389; doi:10.3390/photonics1040380

Guided-Mode Resonance Grating with Self-Assembled Silver Nanoparticles for Surface-Enhanced Raman Scattering Spectroscopy

1
School of Electrical Engineering and Computer Science, Oregon State University, Corvallis, OR 97331, USA
2
Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
3
Omega Optics, Inc., Austin, Texas 78757, USA
4
Department of Electrical and Computer Engineering, University of Texas at Austin, Austin, TX 78758, USA
*
Author to whom correspondence should be addressed.
Received: 16 September 2014 / Revised: 20 October 2014 / Accepted: 20 October 2014 / Published: 23 October 2014
(This article belongs to the Special Issue Photonic Crystal Sensors)
View Full-Text   |   Download PDF [1262 KB, uploaded 23 October 2014]   |  

Abstract

We designed and fabricated guided-mode resonance (GMR) gratings on indium-tin-oxide (ITO) thin film to generate a significantly enhanced local electric field for surface-enhanced Raman scattering (SERS) spectroscopy. Ag nanoparticles (NPs) were self-assembled onto the surface of the grating, which can provide a large amount of “hot-spots” for SERS sensing. The ITO gratings also exhibit excellent tolerance to fabrication deviations due to the large refractive index contrast of the ITO grating. Quantitative experimental results of 5,5’-dithiobis(2-nitrobenzoic acid) (DTNB) demonstrate the best enhancement factor of ~14× on ITO gratings when compared with Ag NPs on a flat ITO film, and the limit of detection (LOD) of DTNB is as low as 10 pM. View Full-Text
Keywords: surface-enhanced Raman scattering; grating; silver nanoparticles; self-assembling; guided-mode resonance surface-enhanced Raman scattering; grating; silver nanoparticles; self-assembling; guided-mode resonance
Figures

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Yang, J.; Ren, F.; Chong, X.; Fan, D.; Chakravarty, S.; Wang, Z.; Chen, R.T.; Wang, A.X. Guided-Mode Resonance Grating with Self-Assembled Silver Nanoparticles for Surface-Enhanced Raman Scattering Spectroscopy. Photonics 2014, 1, 380-389.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Photonics EISSN 2304-6732 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top