Plasmonic laser nanoablation of solid material

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dc.contributor.advisorBen-Yakar, Adela
dc.creatorEversole, Daniel Steven
dc.date.accessioned2017-01-31T16:02:59Z
dc.date.accessioned2018-01-22T22:31:33Z
dc.date.available2017-01-31T16:02:59Z
dc.date.available2018-01-22T22:31:33Z
dc.date.issued2007-12
dc.description.abstractWe experimentally demonstrate the fabrication of nanostructures ablated on silicon (100) and borosilicate glass substrates by the plasmonic scattering of 780 nm, 220 fs laser pulses in the near-field of gold nanospheres. We take advantage of the enhanced plasmonic scattering of ultrashort laser light in the particle near-field to ablate welldefined nanocraters. Gold nanospheres are deposited onto each substrate surface and irradiated with a single laser pulse. We studied the effect of laser polarization on the morphology of ablated nanostructures and estimated the minimum fluence for plasmonic nanoablation necessary for single particles and particle aggregates. Generated nanocrater morphologies show a direct imprint of the particle dipolar scattering region, as predicted in our theoretical calculations. The largest near-field enhancements for single particle ablation were found when the incident radiation was directed at a 45° angle into the substrate surface. Additionally, larger enhancements were measured for particle aggregates than single particles. The measured near-field enhancement values agree well with the maximum field enhancements obtained in our calculations. The agreement between theory and measurements supports that the nanocraters are indeed formed by the enhanced plasmonic scattering in the near-field of the nanoparticles.en_US
dc.description.departmentBiomedical Engineeringen_US
dc.format.mediumelectronicen_US
dc.identifierdoi:10.15781/T2RV0D484
dc.identifier.urihttp://hdl.handle.net/2152/44592
dc.language.isoengen_US
dc.relation.ispartofUT Electronic Theses and Dissertationsen_US
dc.rightsCopyright © is held by the author. Presentation of this material on the Libraries' web site by University Libraries, The University of Texas at Austin was made possible under a limited license grant from the author who has retained all copyrights in the works.en_US
dc.rights.restrictionRestricteden_US
dc.subjectPlasmonic scatteringen_US
dc.subjectLaser nanoablationen_US
dc.subjectNanocratersen_US
dc.titlePlasmonic laser nanoablation of solid materialen_US
dc.typeThesisen_US
dc.type.genreThesisen_US

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