Title
Wide-Band Spectral Control Of Au Nanoparticle Plasmon Resonances On A Thermally And Chemically Robust Sensing Platform
Abstract
Gold nanoparticles on Al2O3-coated gold films are presented as a chemically and thermally robust platform for molecular sensing. Single particle spectroscopy as a function of Al2O3 coating thickness shows reproducible gold nanoparticle scattering spectra in the range from 690 to 610 nm as the Al2O3 thickness increases from 0 to 3.4 nm. Numerical simulation of these structures indicates that surface-enhanced Raman spectroscopy enhancement factors in excess of 10 6 can be achieved. The stability of the Al2O 3-coated structures under high-power laser irradiation was tested, revealing stable scattering spectra upon irradiation with 100 W/mm2 at the particle resonance wavelength. The presented structure solves challenges with thermal stability, wavelength tuning range, and Raman background signal associated with previously attempted approaches. © 2013 American Chemical Society.
Publication Date
9-19-2013
Publication Title
Journal of Physical Chemistry C
Volume
117
Issue
37
Number of Pages
19127-19133
Document Type
Article
Personal Identifier
scopus
DOI Link
https://doi.org/10.1021/jp4056522
Copyright Status
Unknown
Socpus ID
84884573646 (Scopus)
Source API URL
https://api.elsevier.com/content/abstract/scopus_id/84884573646
STARS Citation
Lumdee, Chatdanai; Yun, Binfeng; and Kik, Pieter G., "Wide-Band Spectral Control Of Au Nanoparticle Plasmon Resonances On A Thermally And Chemically Robust Sensing Platform" (2013). Scopus Export 2010-2014. 6262.
https://stars.library.ucf.edu/scopus2010/6262