Direct Observation of Infrared Plasmonic Fano Antiresonances by a Nanoscale Electron Probe
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arXiv
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| Auteurs principaux: | , , , , , , , , |
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| Format: | Preprint |
| Publié: |
2019
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| _version_ | 1866915865976373248 |
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| author | Smith, Kevin C. Olafsson, Agust Hu, Xuan Nelson-Quillin, Amber M. Idrobo, Juan Carlos Collette, Robyn Rack, Philip D. Camden, Jon P. Masiello, David J. |
| author_facet | Smith, Kevin C. Olafsson, Agust Hu, Xuan Nelson-Quillin, Amber M. Idrobo, Juan Carlos Collette, Robyn Rack, Philip D. Camden, Jon P. Masiello, David J. |
| contents | In this Letter, we exploit recent breakthroughs in monochromated aberration-corrected scanning transmission electron microscopy (STEM) to resolve infrared plasmonic Fano antiresonances in individual nanofabricated disk-rod dimers. Using a combination of electron energy-loss spectroscopy (EELS) and theoretical modeling, we investigate and characterize a subspace of the weak coupling regime between quasi-discrete and quasi-continuum localized surface plasmon resonances where infrared plasmonic Fano antiresonances appear. This work illustrates the capability of STEM instrumentation to experimentally observe nanoscale plasmonic responses that were previously the domain only of higher resolution infrared spectroscopies. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_1908_01395 |
| institution | arXiv |
| publishDate | 2019 |
| record_format | arxiv |
| spellingShingle | Direct Observation of Infrared Plasmonic Fano Antiresonances by a Nanoscale Electron Probe Smith, Kevin C. Olafsson, Agust Hu, Xuan Nelson-Quillin, Amber M. Idrobo, Juan Carlos Collette, Robyn Rack, Philip D. Camden, Jon P. Masiello, David J. Mesoscale and Nanoscale Physics In this Letter, we exploit recent breakthroughs in monochromated aberration-corrected scanning transmission electron microscopy (STEM) to resolve infrared plasmonic Fano antiresonances in individual nanofabricated disk-rod dimers. Using a combination of electron energy-loss spectroscopy (EELS) and theoretical modeling, we investigate and characterize a subspace of the weak coupling regime between quasi-discrete and quasi-continuum localized surface plasmon resonances where infrared plasmonic Fano antiresonances appear. This work illustrates the capability of STEM instrumentation to experimentally observe nanoscale plasmonic responses that were previously the domain only of higher resolution infrared spectroscopies. |
| title | Direct Observation of Infrared Plasmonic Fano Antiresonances by a Nanoscale Electron Probe |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/1908.01395 |