Nanowire-based enhancement of localized surface plasmon resonance for highly sensitive detection: A theoretical study

Kyujung Kim, Soon Joon Yoon, Donghyun Kim

Research output: Contribution to journalArticle

94 Citations (Scopus)


A nanowire-based localized surface plasmon resonance (LSPR) biosensor has been investigated to evaluate the impact of design parameters of nanowires on the excitation of localized surface plasmons (LSPs) and the sensitivity enhancement of a LSPR biosensor. The results based on rigorous coupled wave analysis and finite difference time domain method indicate that significant sensitivity increase is associated with LSP excitation mediated by nanowires and that resonant coupling of LSPs through a nanogroove achieves larger field enhancement and sensitivity improvement than LSP excitation in a single nanowire. A specific optimization provided a nanowire-based structure with sensitivity increase by more than 23 times as well as good linear detection properties.

Original languageEnglish
Pages (from-to)12419-12431
Number of pages13
JournalOptics Express
Issue number25
Publication statusPublished - 2006 Dec 11


All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cite this