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Title page for ETD etd-03142016-150208

Type of Document Dissertation
Author Li, Wei
Author's Email Address wei.li@vanderbilt.edu
URN etd-03142016-150208
Title Photothermal and Photoelectrical Energy Conversion in Plasmonic Nanostructures
Degree PhD
Department Mechanical Engineering
Advisory Committee
Advisor Name Title
Jason G. Valentine Committee Chair
D. Greg Walker Committee Member
Deyu Li Committee Member
Richard F. Haglund Jr. Committee Member
Sharon M. Weiss Committee Member
  • photodetection
  • plasmonics
  • nanophotonics
  • surface plasmon
  • metamaterial
  • optoelectronics
Date of Defense 2016-03-21
Availability unrestricted
Surface plasmons, coherent oscillations of electrons in metals that can be excited with electromagnetic waves, are a key component in routing and manipulating light-matter interaction at nanometer length scales. Because of their deep-subwavelength mode volumes and strong field confinement, surface plasmons provide a means to realize numerous innovations such as metamaterials & metasurfaces, sub-diffraction limited imaging, sensing, and cloaking. While the non-radiative decay of plasmons has been long considered to be a parasitic loss, recent research has shown that it can be harnessed for a number of applications including photothermal heat generation, photodetection, photovoltaics and photocatalysis. Despite the significant advances, research in this area is still in its infancy with devices generally suffering from low efficiencies. This thesis focuses on understanding how plasmonic nanostructures can be properly engineered to take full advantage of the non-radiatively plasmon decay process for realizing new functionalities, as well as enhancing the efficiency of photothermal heating and photoelectrical energy conversion systems.
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