Absorption Localization in Plasmonic Heterostructures

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dc.contributor.advisorLink, Stephanen_US
dc.creatorHosseini Jebeli, Seyyed Alien_US
dc.date.accessioned2019-05-17T15:07:11Zen_US
dc.date.available2019-05-17T15:07:11Zen_US
dc.date.created2018-05en_US
dc.date.issued2018-04-16en_US
dc.date.submittedMay 2018en_US
dc.date.updated2019-05-17T15:07:11Zen_US
dc.description.abstractPlasmonic nanoparticles have found many applications in different areas such as nanoelectronics, energy harvesting and conversion, and photothermal therapy due to their strong interaction with light. The light absorption of homogenous plasmonic structures is mostly uniform and cannot be engineered easily. In this work, the absorption localization in heterogeneous structures is presented using different materials in the same structure as well as the same material in heterodimer structures composed of rods of different sizes. Pt decorated gold nanorods are found to have significant heat localization in the Pt particles due to their stronger light absorption than gold. The localization of absorption in the Pt is confirmed by performing correlated photoluminescence and scattering measurements as well as FDTD simulations. Additionally, gold nanorods of different sizes are coupled together to form a heterodimer. In this work, the results of changing the gap size between the nanorods are presented. This alters the amount of coupling between nanorods which allows control over the absorption intensity of each particle. Further, we find that the absorption hot spots can be switched in these structures by changing the excitation wavelength. Significant absorption localization is observed in both cases which demonstrates the great potential of plasmonic heterostructures for manipulating light-matter interactions.en_US
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationHosseini Jebeli, Seyyed Ali. "Absorption Localization in Plasmonic Heterostructures." (2018) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/105745">https://hdl.handle.net/1911/105745</a>.en_US
dc.identifier.urihttps://hdl.handle.net/1911/105745en_US
dc.language.isoengen_US
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.subjectPlasmonic nano particlesen_US
dc.subjectAbsorption enhancementen_US
dc.titleAbsorption Localization in Plasmonic Heterostructuresen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentElectrical and Computer Engineeringen_US
thesis.degree.disciplineEngineeringen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelMastersen_US
thesis.degree.majornanophotonicsen_US
thesis.degree.nameMaster of Scienceen_US
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