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dc.contributor.authorCapadona, Lynn A.en_US
dc.date.accessioned2005-03-03T17:45:28Z
dc.date.available2005-03-03T17:45:28Z
dc.date.issued2004-07-12en_US
dc.identifier.urihttp://hdl.handle.net/1853/5117
dc.description.abstractPhotoactivated fluorescence from individual silver nanoclusters ranging in size from 2 8 atoms has been demonstrated at room temperature. The optical properties of such clusters are far superior to those of fluorescence dyes with absorption cross sections ~50 times stronger than those of even the best organic dyes. The strong oscillator strengths produced from such nanoclusters has been shown to yield comparable enhancement factors in the surface-enhanced Raman spectroscopy (SERS) process to those observed in the presence of a plasmon- supporting nanoparticle. Raman transitions are in fact so strong that antistokes scattering is also observable on a single molecule (SM) level marking the first true demonstration of SM-SERS to date. Capable of generating true scaffold specific Raman scattering on the single molecule level, the combination of fluorescence from the small nanoclusters and strong observed Raman signals in the absence of a nanoparticle strongly indicate a chemical or charge transfer SERS enhancement mechanism.en_US
dc.format.extent3208845 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoen_US
dc.publisherGeorgia Institute of Technologyen_US
dc.subjectData storageen_US
dc.subjectSilver nanoclusters
dc.subjectSingle molecule Raman
dc.titlePhotoactivated Fluorescence from Small Silver Nanoclusters and Their Relation to Raman Spectroscopyen_US
dc.typeDissertationen_US
dc.description.degreePh.D.en_US
dc.contributor.departmentChemistry and Biochemistryen_US
dc.description.advisorCommittee Chair: Robert M. Dickson; Committee Member: L. Andrew Lyon; Committee Member: Mohan Srinivasarao; Committee Member: Mostafa A. El-Sayed; Committee Member: Robert L. Whettenen_US


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