Multi-layer si-based surface plasmon resonance structure for adsorption sensing

DOIResolve DOI: http://doi.org/10.1081/AL-120026570
AuthorSearch for: ; Search for: ; Search for: ; Search for:
TypeArticle
Volume36
Issue15
Pages32613270; # of pages: 10
SubjectAdsorption; env; Surface Plasmon Resonance
AbstractA multi-layer Si-based surface plasmon resonance (SPR) sensing structure, consisting of a silicon coupling prism, an intermediate SiO 2 layer, a gold film, and a sensing medium, is considered. Such structure makes possible an excitation of two angularly separated surface plasmon polariton modes over both sides of the gold film. We examine the response of the system in the case of the absorption sensing, which is simulated by the gold thickness change. Both calculations and experimental data show that the 'internal' plasmon mode over the SiO 2/gold interface appears to be at least 4-6 times more sensitive than the 'external' one over the gold/sensing medium interface, which is employed in most conventional SPR schemes. The proposed internal plasmon-based absorption sensor structure can be used for studies of optical absorption layers and for colloidal Au-enhanced SPR sensing of ultra-small (bio)-chemical agents.
Publication date
AffiliationNRC Biotechnology Research Institute; National Research Council Canada
Peer reviewedNo
NRC number47200
NPARC number3540069
Export citationExport as RIS
Report a correctionReport a correction
Record identifier70a67c57-8c0b-4cec-a25c-bfd9df98fd76
Record created2009-03-01
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)