'Fairy Chimney'-Shaped Tandem Metamaterials as Double Resonance SERS Substrates

Date
2012-10-12
Advisor
Instructor
Source Title
Small
Print ISSN
1613-6810
Electronic ISSN
Publisher
Wiley-VCH Verlag
Volume
9
Issue
4
Pages
531 - 537
Language
English
Type
Article
Journal Title
Journal ISSN
Volume Title
Abstract

A highly tunable design for obtaining double resonance substrates to be used in surface-enhanced Raman spectroscopy is proposed. Tandem truncated nanocones composed of Au-SiO2-Au layers are designed, simulated and fabricated to obtain resonances at laser excitation and Stokes frequencies. Surface-enhanced Raman scattering experiments are conducted to compare the enhancements obtained from double resonance substrates to those obtained from single resonance gold truncated nanocones. The best enhancement factor obtained using the new design is 3.86 x 107. The resultant tandem structures are named after Fairy Chimneys rock formation in Cappadocia, Turkey.

Course
Other identifiers
Book Title
Keywords
Localized Surface Plasmons, Surface Enhanced Raman Scattering, Double Resonances, Au-sio2-au, Tandem Nanocones
Citation
Published Version (Please cite this version)