Journal article
Dispersion Characteristics in Disk-on-Pillar Array Nanostructures for Surface-Enhanced Raman Spectroscopy
Journal of physical chemistry. C, v 115(28), pp 13624-13629
21 Jul 2011
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
In this paper, we analyze periodic disk-on-pillar nanoarrays as a platform for surface-enhanced Raman spectroscopy measurements. The nanostructure is a two-dimensional grating of silicon pillars covered by thin layers of silica and silver. The system supports both localized surface plasmons and surface plasmon polaritons. We investigate the dispersion characteristics of the nanoarray and present the relevant field distribution for each plasmon mode. The interaction between localized and propagating modes can be tuned to synergistically enhance the electric field, which results in larger surface-enhanced Raman signals. We find that utilizing this effect can generate Raman enhancements that are approximately 1000 times larger than that of an isolated pillar under the same excitation conditions.
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Details
- Title
- Dispersion Characteristics in Disk-on-Pillar Array Nanostructures for Surface-Enhanced Raman Spectroscopy
- Creators
- Alessia Polemi - Drexel UniversitySabrina M. Wells - University of Tennessee at KnoxvilleNickolay V. Lavrik - Oak Ridge National LaboratoryMichael J. Sepaniak - University of Tennessee at KnoxvilleKevin L. Shuford - Drexel University
- Publication Details
- Journal of physical chemistry. C, v 115(28), pp 13624-13629
- Publisher
- American Chemical Society; Washington, DC
- Number of pages
- 6
- Grant note
- Drexel University Division of Scientific User Facilities, U.S. Department of Energy; United States Department of Energy (DOE)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:000292892600013
- Scopus ID
- 2-s2.0-79960389503
- Other Identifier
- 991019168779104721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology