Research Papers

Diffraction in nanoparticle lattices increases sensitivity of localized surface plasmon resonance to refractive index changes

[+] Author Affiliations
Phillip Blake

University of Arkansas, Ralph E. Martin Department of Chemical Engineering, Fayetteville, Arkansas 72701

Sophie Kühne

Institute of Mechanical Process Engineering and Minerals Processing, Agriclolastrasse 1, 09599 Freiberg, Germany

Gregory T. Forcherio

University of Arkansas, Microelectronics-Photonics Program, Fayetteville, Arkansas 72701

D. Keith Roper

University of Arkansas, Ralph E. Martin Department of Chemical Engineering, Fayetteville, Arkansas 72701

University of Arkansas, Microelectronics-Photonics Program, Fayetteville, Arkansas 72701

J. Nanophoton. 8(1), 083084 (Jun 16, 2014). doi:10.1117/1.JNP.8.083084
History: Received January 28, 2014; Revised April 12, 2014; Accepted April 18, 2014
Text Size: A A A

Abstract.  Comparing predicted and measured spectra from isolated and ordered nanoparticles (NPs) indicates that ordering NPs into lattices can blueshift the localized surface plasmon resonant (LSPR) spectral feature and increase its wavelength sensitivity to local changes in refractive index. This occurs at lattice constants at or above the resonant wavelength. Numerical analysis indicates its results from effects of diffractive modes on LSPR features that are distinct from Fano resonances, which arise separately due to coupling between diffractive modes and localized plasmons. Refractive index sensitivity of the aggregate LSPR peak from NPs in a square lattice (314nmRIU1) was 5.8-fold higher than a comparable peak from random NPs (54nmRIU1). Measured sensitivities of Fano resonance features in two ordered samples were 127% and 312%, respectively, of the highest LSPR sensitivity from a random assembly of NPs.

Figures in this Article
© 2014 Society of Photo-Optical Instrumentation Engineers

Citation

Phillip Blake ; Sophie Kühne ; Gregory T. Forcherio and D. Keith Roper
"Diffraction in nanoparticle lattices increases sensitivity of localized surface plasmon resonance to refractive index changes", J. Nanophoton. 8(1), 083084 (Jun 16, 2014). ; http://dx.doi.org/10.1117/1.JNP.8.083084


Tables

Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

PubMed Articles
Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.