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dc.contributor.authorSun, Quanen_US
dc.contributor.authorYu, Hanen_US
dc.contributor.authorUeno, Koseien_US
dc.contributor.authorKubo, Atsushien_US
dc.contributor.authorMatsuo, Yasutakaen_US
dc.contributor.authorMisawa, Hiroakien_US
dc.date.accessioned2017-04-21T06:56:46Z-
dc.date.available2017-04-21T06:56:46Z-
dc.date.issued2016-03en_US
dc.identifier.issn1936-0851en_US
dc.identifier.urihttp://dx.doi.org/10.1021/acsnano.6b00715en_US
dc.identifier.urihttp://hdl.handle.net/11536/133489-
dc.description.abstractDipole and quadrupole modes are the two lowest orders of localized surface plasmon resonance (LSPR) eigenmodes in metallic nanoparticles. Of these two modes, the quadrupole mode is forbidden for symmetric metallic nanoparticles excited by linearly polarized light at normal incidence. Here, we demonstrate excitation of the quadrupole mode in symmetrical gold (Au) nanoblocks shined with s -polarized light at oblique incidence. In particular, we probe the near -field LSPR in Au nanoblocks using photoemission electron microscopy (PEEM) and find that at oblique incidence, the dipole and quadrupole modes can be selectively excited, in terms of near -field enhancement, by manipulating the light polarization state. More importantly, by time -resolved PEEM measurements, we experimentally demonstrate that the quadrupole mode in symmetrical Au nanoblocks has longer dephasing time than that of the dipole mode.en_US
dc.language.isoen_USen_US
dc.subjectsurface plasmon resonanceen_US
dc.subjectnear-field imaging dephasing photoemission electron microscopy (PEEM)en_US
dc.subjectdark plasmon modeen_US
dc.titleDissecting the Few-Femtosecond Dephasing Time of Dipole and Quadrupole Modes in Gold Nanoparticles Using Polarized Photoemission Electron Microscopyen_US
dc.identifier.doi10.1021/acsnano.6b00715en_US
dc.identifier.journalACS NANOen_US
dc.citation.volume10en_US
dc.citation.issue3en_US
dc.citation.spage3835en_US
dc.citation.epage3842en_US
dc.contributor.department應用化學系zh_TW
dc.contributor.department應用化學系分子科學碩博班zh_TW
dc.contributor.departmentDepartment of Applied Chemistryen_US
dc.contributor.departmentInstitute of Molecular scienceen_US
dc.identifier.wosnumberWOS:000372855400089en_US
Appears in Collections:Articles