Title

Blue-Shifted Narrow Localized Surface Plasmon Resonance From Dipole Coupling In Gold Nanoparticle Random Arrays

Abstract

In this work, we develop a simple method to produce highly uniform localized surface plasmon resonance (LSPR) substrates based on self-assembly of colloidal gold nanoparticles onto pretreated glass substrates. The LSPR wavelength of the gold nanoparticle arrays is blue-shifted from that of the gold nanoparticles in solution and the single gold nanoparticles on glass substrate. The LSPR width is narrower than that of the single gold nanoparticles. The blue-shifted LSPR is due to the long-range dipole coupling in the gold nanoparticle random arrays indicated from simulations using the T-matrix method. In addition to the popularly used LSPR wavelength dependence on the dielectric environment, we have found that the LSPR width of the gold nanoparticle random arrays is also sensitive to the change in the dielectric environment. The LSPR substrates are reproducible, uniform, and robust with potential applications in LSPR sensing and imaging.

Publication Date

11-13-2014

Publication Title

Journal of Physical Chemistry C

Volume

118

Issue

45

Number of Pages

26276-26283

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1021/jp508181g

Socpus ID

84930622057 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84930622057

This document is currently not available here.

Share

COinS