Plasmonics

, Volume 6, Issue 1, pp 29–34

Enhanced Sensitivity of Surface Plasmon Resonance Phase-Interrogation Biosensor by Using Silver Nanoparticles

  • Tzu-Cheih Peng
  • Wen-Chi Lin
  • Chih-Wei Chen
  • Din Ping Tsai
  • Hai-Pang Chiang
Article

DOI: 10.1007/s11468-010-9165-4

Cite this article as:
Peng, TC., Lin, WC., Chen, CW. et al. Plasmonics (2011) 6: 29. doi:10.1007/s11468-010-9165-4

Abstract

It is demonstrated that the sensitivity of surface plasmon resonance phase-interrogation biosensor can be enhanced by using silver nanoparticles. Silver nanoparticles were fabricated on silver films by using thermal evaporation. Sizes of silver nanoparticles on silver thin film can be tuned by controlling the deposition parameters of thermal evaporation. By using surface plasmon resonance heterodyne interferometey to measure the phase difference between the p and s polarization of incident light, we have demonstrated that sensitivity of glucose detection down to the order of 10−8 refractive index units can be obtained.

Keywords

Surface plasmonsPhase measurementSilver nanoparticlesBiosensor

Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Tzu-Cheih Peng
    • 1
  • Wen-Chi Lin
    • 1
  • Chih-Wei Chen
    • 1
  • Din Ping Tsai
    • 2
    • 4
  • Hai-Pang Chiang
    • 1
    • 3
    • 4
  1. 1.Institute of Optoelectronic SciencesNational Taiwan Ocean UniversityKeelungTaiwan
  2. 2.Department of PhysicsNational Taiwan UniversityTaipeiTaiwan
  3. 3.Institute of PhysicsAcademia SinicaTaipeiTaiwan
  4. 4.Instrument Technology Research CenterNational Applied Research LaboratoriesHsinchuTaiwan