Single-particle absorption spectroscopy by photothermal contrast

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dc.contributor.advisorLink, Stephanen_US
dc.contributor.committeeMemberLandes, Christy Fen_US
dc.contributor.committeeMemberNordlander, Peter Jen_US
dc.contributor.committeeMemberKelly, Kevin Fen_US
dc.creatorNizzero, Saraen_US
dc.date.accessioned2016-02-05T15:17:53Zen_US
dc.date.available2016-02-05T15:17:53Zen_US
dc.date.created2015-05en_US
dc.date.issued2014-11-21en_US
dc.date.submittedMay 2015en_US
dc.date.updated2016-02-05T15:17:53Zen_US
dc.description.abstractIndependent characterization of absorption of nano-objects is fundamental to the understanding of non-radiative properties of light matter interaction. To resolve heterogeneity in the response due to local effects, orientation or rare interactions, a single particle approach is necessary. Currently, there are very few methods that attempt to do so. Furthermore, they are limited in the type of structures and the spectral range for which they succeed. This work presents the first general and broad band method to measure the pure absorption spectrum of single particles. Photothermal microscopy is combined with a supercontinuum pulsed fiber optic tunable laser to detect a signal proportional to the pure absorption cross section of single particles at different excitation wavelengths. For the first time, a method is available to measure the pure absorption spectra of single nano-structures that exhibit spectral features from the visible to the near IR. This method is used to resolve the radiative and non-radiative properties of simple gold nanostructures, revealing the heterogeneity present in the response.en_US
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationNizzero, Sara. "Single-particle absorption spectroscopy by photothermal contrast." (2014) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/88380">https://hdl.handle.net/1911/88380</a>.en_US
dc.identifier.urihttps://hdl.handle.net/1911/88380en_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.subjectphotothermalen_US
dc.subjectplasmonic nanoparticlesen_US
dc.subjectnanorodsen_US
dc.subjectimagingen_US
dc.subjectfiber optic laseren_US
dc.subjectspectroscopyen_US
dc.subjectabsorption spectraen_US
dc.subjectsingle particleen_US
dc.subjectplasmonicsen_US
dc.titleSingle-particle absorption spectroscopy by photothermal contrasten_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentApplied Physicsen_US
thesis.degree.disciplineNatural Sciencesen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelMastersen_US
thesis.degree.majorApplied Physics/Electrical Engen_US
thesis.degree.nameMaster of Scienceen_US
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