Journal article
Local Field Enhancement of Pillar Nanosurfaces for SERS
Journal of physical chemistry. C, v 114(42), pp 18096-18102
28 Oct 2010
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
We present studies on the analysis and characterization of a unique nanosurface used for Surface-Enhanced Raman Spectroscopy. The optical properties of a nanostructure composed of dielectric pillars that support plasmonic nanoparticles have been investigated. A theoretical analysis has been performed to determine the structural properties that localize the electric field around the silver disk. We define an enhancement factor in terms of the local field integrated over the nanoparticle surface and find that this figure of merit varies considerably depending upon the pillar attributes. An analytic model is presented and validated via full wave analysis, which elucidates the optical effects occurring in the nanostructure. Starting from the basic phenomenology associated with a single pillar structure, we show that several different effects combine to create a global resonance.
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Details
- Title
- Local Field Enhancement of Pillar Nanosurfaces for SERS
- Creators
- Alessia Polemi - University of Tennessee at KnoxvilleSabrina M. Wells - University of Tennessee at KnoxvilleNickolay V. Lavrik - University of Tennessee at KnoxvilleMichael J. Sepaniak - University of Tennessee at KnoxvilleKevin L. Shuford - University of Tennessee at KnoxvilleOak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Publication Details
- Journal of physical chemistry. C, v 114(42), pp 18096-18102
- Publisher
- American Chemical Society; Washington, DC
- Number of pages
- 7
- Grant note
- Oak Ridge National Laboratory by the Division of Scientific User Facilities, U.S. Department of Energy; United States Department of Energy (DOE) Drexel University
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:000283110700012
- Scopus ID
- 2-s2.0-77958547967
- Other Identifier
- 991019168879004721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology