Light trapping and enhancing gold nanoparticle array substrates made by thermal dewetting technique

T. W. Chang, H. Jin, Gang Logan Liu

Research output: Chapter in Book/Report/Conference proceedingConference contribution


In this paper, we fabricated gold particle array substrate by thermal dewetting technique. The fabrication process is simple, reliable, cost efficient with comparing to other techniques. From optical characteristic it shows light trapping ability to reduce reflectance around 75%. Combining light trapping and its localized plasmonic properties, this substrate has significant advantages on plasmonic based sensing methods such as surface enhanced Raman scattering (SERS). SERS measurement has been performed and the enhancement factor is 2.58×105. Further more, after silver thin film deposition the enhancement can be increased up to 2 orders and the enhancement factor is 3.66×107.

Original languageEnglish (US)
Title of host publicationBiosensing and Nanomedicine V
StatePublished - Dec 1 2012
EventBiosensing and Nanomedicine V - San Diego, CA, United States
Duration: Aug 12 2012Aug 15 2012

Publication series

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


OtherBiosensing and Nanomedicine V
Country/TerritoryUnited States
CitySan Diego, CA


  • Light trapping
  • Nanoparitcles
  • SERS
  • Surface plasmon
  • Thermal dewetting

ASJC Scopus subject areas

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


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