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Title:
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Fabrication of plasmonic nanoparticle structures on planar substrates |
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Author:
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Lwin, Nyein Z. |
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Advisor:
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Halas, Naomi J. |
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Degree:
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Master of Science thesis |
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Abstract:
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Studying the optical properties of coupled plasmonic systems is important for both fundamental understanding and optimization of plasmon-enhanced optical sensing applications such as surface enhanced Raman scattering (SERS), near-field optical microscopy (NSOM) and surface plasmon resonance (SPR) sensing. Two nanoparticle structures of particular interest include nanoshell dimers and nanoparticles suspended over a metal film. We present a bench-top wet-chemistry method for nanoparticle dimer fabrication. The significant optical near-field enhancement in the gap between nanoparticles in a dimer structure could make it a powerful tool for enhanced spectroscopy applications. A simple geometry of nanoparticles suspended over a metal film is fabricated and its optical response is probed at various film thicknesses using optical transmission spectroscopy. A virtual resonance state emerged from interaction between discrete nanoparticle plasmons and the effective continuum of film plasmons shows a strong red-shift as the film thickness is decreased. |
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Citation:
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Lwin, Nyein Z.. "Fabrication of plasmonic nanoparticle structures on planar substrates." Masters Thesis, Rice University, ETD http://hdl.handle.net/1911/17894. |
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Citable link to this page:
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http://hdl.handle.net/1911/17894 |
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Date:
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2006 |
