Bioapplication of plasmonic nanosheet

K. Tamada, K. Michioka, X. Li, Y. Ikezoe, M. Saito, K. Otsuka

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

4 Citations (Scopus)

Abstract

In this paper, we present our recent progress to fabricate "plasmonic silver nanosheet" for highly sensitive biosensing devices. Uniformly sized silver nanoparticles (d = 4.8 nm ±0.1 nm) are deposited on the substrate as a homogeneous nanosheet composed of two dimensional crystalline domains, in which the distance between silver cores is accurately controlled by the thickness of the capping organic molecules (myristate, alkanethiols). The silver nanosheet exhibits a significant shift of plasmon absorption band to the longer wavelength (ca. 50 nm) from the position in dispersion solution, while the peak width was rather reduced (sharpened) as an evidence of homogeneous coupling of local plasmons. We also found the unique coupling between propagating surface plasmon on gold thin film and localized surface plasmon on silver nanosheet. This flexible, transferable nanosheet, which can trap and transport bulk light at nano-interface, promises new application in the field of bio- and organic devices.

Original languageEnglish
Title of host publicationOrganic Photonic Materials and Devices XI
DOIs
Publication statusPublished - 2009
EventOrganic Photonic Materials and Devices XI - San Jose, CA, United States
Duration: 2009 Jan 272009 Jan 29

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7213
ISSN (Print)0277-786X

Other

OtherOrganic Photonic Materials and Devices XI
Country/TerritoryUnited States
CitySan Jose, CA
Period09/1/2709/1/29

Keywords

  • Biosensing
  • Plasmon
  • Silver nanoparticles

ASJC Scopus subject areas

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

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