Enhanced sensitivity of surface plasmon resonance phase-interrogation biosensor by using oblique deposited silver nanorods

Hung Yi Chung, Chih Chia Chen, Pin Chieh Wu, Ming Lun Tseng, Wen Chi Lin, Chih Wei Chen, Hai Pang Chiang

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

Sensitivity of surface plasmon resonance phase-interrogation biosensor is demonstrated to be enhanced by oblique deposited silver nanorods. Silver nanorods are thermally deposited on silver nanothin film by oblique angle deposition (OAD). The length of the nanorods can be tuned by controlling the deposition parameters of thermal deposition. By measuring the phase difference between the p and s waves of surface plasmon resonance heterodyne interferometer with different wavelength of incident light, we have demonstrated that maximum sensitivity of glucose detection down to 7.1 × 10-8 refractive index units could be achieved with optimal deposition parameters of silver nanorods.

Original languageEnglish
Article number476
JournalNanoscale Research Letters
Volume9
Issue number1
DOIs
Publication statusPublished - 2014 Jan 1

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

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