Effect of metallic nanowires on the sensitivity enhancement of surface plasmon resonance biosensors

Kyung Min Byun, Soon Joon Yoon, Donghyun Kim, Sung June Kim

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


In this study, we experimentally confirmed the sensitivity enhancement by the nanowire-based surface plasmon resonance (SPR) sensor structure. Gold nanowire samples with a period of 500 nm were fabricated by interference lithography on a gold-SF10 glass substrate. Sensitivity enhancement compared to a conventional SPR structure was measured to be 31% when evaluated using a varied concentration of ethanol at a dielectric surrounding layer. This result is consistent with numerical data of rigorous coupled-wave analysis. Rough surfaces of thin gold film and gold nanowires are deemed to induce the sensitivity degradation by more than 10%. More significant sensitivity improvement can be achieved by implementing finer nanowires.

Original languageEnglish
Title of host publicationPlasmonics in Biology and Medicine IV
Publication statusPublished - 2007
EventPlasmonics in Biology and Medicine IV - San Jose, CA, United States
Duration: 2007 Jan 232007 Jan 23

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
ISSN (Print)1605-7422


OtherPlasmonics in Biology and Medicine IV
Country/TerritoryUnited States
CitySan Jose, CA

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Biomaterials
  • Radiology Nuclear Medicine and imaging


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