Near infrared surface plasmon resonance of gold nanoring based plasmonic crystals for sensor applications

Author

Jiang, Hao ; Sabarinathan, Jayshri

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Western Ontario, London, ON, Canada

fYear

2009

fDate

26-30 July 2009

Firstpage

777

Lastpage

780

Abstract

Plasmonic crystal structures based on periodic arrays of gold nanorings were fabricated on glass substrates and studied by transmission measurements and by finite difference time domain simulations. Transmission measurement results, which closely match the simulation results, show two surface plasmon resonance peaks in the near infrared spectrum range and the peaks can be tuned by changing the lattice constants of the arrays. Using simulations, we investigated the quantitative performance of the sensor. The results show a sensitivity of 537 nm/RIU in bulk sensing applications and 1.6 nm spectral shift for 1 nm change in coating thickness on the surface of the gold nanorings in affinity sensing applications.

Keywords

coatings; finite difference time-domain analysis; glass; gold; infrared spectra; lattice constants; nanostructured materials; optical arrays; optical sensors; phononic crystals; spectral line shift; surface plasmon resonance; Au; SiO₂; bulk sensing applications; coating thickness; finite difference time domain simulations; glass substrates; gold nanoring; lattice constants; near-infrared surface plasmon resonance; periodic arrays; plasmonic crystal structures; sensor applications; spectral shift; transmission measurements; wavelength 537 nm; Crystals; Finite difference methods; Glass; Gold; Infrared sensors; Infrared spectra; Periodic structures; Plasmons; Resonance; Time measurement; finite difference time domain; gold nanoring; plasmonic crystal; surface plasmon resonance;

fLanguage

English

Publisher

ieee

Conference_Titel

Nanotechnology, 2009. IEEE-NANO 2009. 9th IEEE Conference on

Conference_Location

Genoa

ISSN

1944-9399

Print_ISBN

978-1-4244-4832-6

Electronic_ISBN

1944-9399

Type

conf

Filename

5394746