Enhancement of the resolution of surface plasmon resonance biosensors by control of the size and distribution of nanoparticles

Shean-Jen Chen*, F. C. Chien, G. Y. Lin, K. C. Lee

*Corresponding author for this work

Research output: Contribution to journalArticle

63 Scopus citations

Abstract

A new resolution-enhanced surface plasmon resonance (SPR) biosensor offers a tenfold improvement in resolution compared with conventional SPR biosensors in the detection of the surface coverage of biomaterials. The proposed optical biosensor, based on the attenuated total-reflection method, excites both the surface plasmons and particle plasmons to enhance the local electromagnetic field by control of the size and volume fraction of embedded Au nanoparticles to increase the resolution of the device. The SPR biosensor design is based on the Maxwell-Garnett model and the Fresnel equations, and the device is fabricated with a cosputtering deposition system.

Original languageEnglish
Pages (from-to)1390-1392
Number of pages3
JournalOptics Letters
Volume29
Issue number12
DOIs
StatePublished - 15 Jun 2004

Fingerprint Dive into the research topics of 'Enhancement of the resolution of surface plasmon resonance biosensors by control of the size and distribution of nanoparticles'. Together they form a unique fingerprint.

Cite this