Predicting the Localized Surface Plasmon Resonances of Spherical Nanoparticles on a Substrate: Electrostatic Eigenmode Method
Alison Chou, Kristy C Vernon, Lennart Piro, Babak Radi, Esa A Jaatinen, Timothy J Davis
JOURNAL OF PHYSICAL CHEMISTRY C | AMER CHEMICAL SOC | Published : 2012
We present experimental results that demonstrate that the wavelength of the fundamental localized surface plasmon resonance for spherical gold nanoparticles on glass can be predicted using a simple one-line analytical formula derived from the electrostatic eigenmode method. This allows the role of the substrate in lifting mode degeneracies to be determined and the role of local environment refractive indices in the plasmon resonance to be investigated. The effect of adding silica to the casting solution in minimizing nanopaticle agglomeration is also discussed. © 2012 American Chemical Society.
Awarded by Australian Research Council
K.C.V. acknowledges the Australian Research Council for their support through Discovery Project DP110101454 and Boolean Plasmonics and QUT for their support through the High Performance Computing Centre and ECARD grant scheme. L.P. thanks DAAD for their support through the DAAD internship program. A.C. thanks Dr. Jamie Riches for assistance with TEM imaging and Dr. Hui Diao for SEM imaging.