Extraordinary light-induced local field, angular momentum and force near metallic nanoparticles

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dc.contributor.advisorNordlander, Peteren_US
dc.creatorYang, Xiaoen_US
dc.date.accessioned2019-05-16T20:16:47Zen_US
dc.date.available2019-05-16T20:16:47Zen_US
dc.date.created2017-08en_US
dc.date.issued2017-08-10en_US
dc.date.submittedAugust 2017en_US
dc.date.updated2019-05-16T20:16:47Zen_US
dc.description.abstractThe intense local field induced near metallic nanostructures provides strong enhancements for surface enhanced spectroscopies, a major focus of plasmonics research over the past decade. Here we show several different nanoantennas for SEIRA detection, which exhibit an order of magnitude greater SEIRA sensitivity than previous record-setting designs. We also consider that plasmonic nanoparticles can induce remarkably large electromagnetic field gradients near their surfaces, which can excite dipole-forbidden transitions in nearby atoms or molecules and provide unique spectroscopic fingerprinting for chemical and bimolecular sensing. We introduce the concept of the local angular momentum (LAM) vector as a useful figure of merit for the design of nanostructures that provide large field gradients. Finally, we introduce a new technique that can demonstrate the mapping of electromagnetic forces between a nanoscale tip and an optically excited sample consisting of plasmonic nanostructures with an imaging platform based on atomic force microscopy.en_US
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationYang, Xiao. "Extraordinary light-induced local field, angular momentum and force near metallic nanoparticles." (2017) Diss., Rice University. <a href="https://hdl.handle.net/1911/105493">https://hdl.handle.net/1911/105493</a>.en_US
dc.identifier.urihttps://hdl.handle.net/1911/105493en_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.subjectSEIRAen_US
dc.subjectLocal Angular Momentumen_US
dc.subjectPiFMen_US
dc.titleExtraordinary light-induced local field, angular momentum and force near metallic nanoparticlesen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentPhysics and Astronomyen_US
thesis.degree.disciplineNatural Sciencesen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelDoctoralen_US
thesis.degree.majorNanophotonicsen_US
thesis.degree.nameDoctor of Philosophyen_US
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