Impact of geometry and magneto-optical properties on field enhancement and optical bistability in core–shell nanoparticles
Abstract We study the interaction of electromagnetic field with two of the most tunable nanostructure geometries for nanoplasmonics including the magneto-optical nanoshell structure and the spheroidal geometry. We investigate the effect of combining both geometry and magneto-optical properties withi...
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| Format: | Article |
| Language: | English |
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Oxford International Collaboration Centre Press (OICC press)
2018-12-01
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| Series: | Journal of Theoretical and Applied Physics |
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| Online Access: | http://link.springer.com/article/10.1007/s40094-018-0314-z |
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| author | Tayebeh Naseri Fatemeh Pourkhavari |
| author_facet | Tayebeh Naseri Fatemeh Pourkhavari |
| author_sort | Tayebeh Naseri |
| collection | DOAJ |
| description | Abstract We study the interaction of electromagnetic field with two of the most tunable nanostructure geometries for nanoplasmonics including the magneto-optical nanoshell structure and the spheroidal geometry. We investigate the effect of combining both geometry and magneto-optical properties within the same nanostructure on the field enhancement factor and optical bistability behaviors. Since the coupling between the inner and outer surface plasmons of the nanoshell is stronger for the elongated spheroidal geometry as compared to that for the spherical case, field enhancement in ellipsoid nanoparticles is much more saleintiant. Moreover, the plasmonic field enhancement is four orders of magnitude larger for the spheroidal nanoshells as compared to spherical nanoshells. In addition to the appearance of optical bistability in this system, it is found that the threshold and window of bistability are strongly dependent on magneto-optical properties and geometry of the core–shell nanoparticle. |
| format | Article |
| id | doaj-art-f58fbe97bb1e4ff9814f3b5ee4e257b3 |
| institution | DOAJ |
| issn | 2251-7227 2251-7235 |
| language | English |
| publishDate | 2018-12-01 |
| publisher | Oxford International Collaboration Centre Press (OICC press) |
| record_format | Article |
| series | Journal of Theoretical and Applied Physics |
| spelling | doaj-art-f58fbe97bb1e4ff9814f3b5ee4e257b32025-08-20T03:10:39ZengOxford International Collaboration Centre Press (OICC press)Journal of Theoretical and Applied Physics2251-72272251-72352018-12-01131232910.1007/s40094-018-0314-zImpact of geometry and magneto-optical properties on field enhancement and optical bistability in core–shell nanoparticlesTayebeh Naseri0Fatemeh Pourkhavari1Department of Physics, Razi UniversityDepartment of Physics, Razi UniversityAbstract We study the interaction of electromagnetic field with two of the most tunable nanostructure geometries for nanoplasmonics including the magneto-optical nanoshell structure and the spheroidal geometry. We investigate the effect of combining both geometry and magneto-optical properties within the same nanostructure on the field enhancement factor and optical bistability behaviors. Since the coupling between the inner and outer surface plasmons of the nanoshell is stronger for the elongated spheroidal geometry as compared to that for the spherical case, field enhancement in ellipsoid nanoparticles is much more saleintiant. Moreover, the plasmonic field enhancement is four orders of magnitude larger for the spheroidal nanoshells as compared to spherical nanoshells. In addition to the appearance of optical bistability in this system, it is found that the threshold and window of bistability are strongly dependent on magneto-optical properties and geometry of the core–shell nanoparticle.http://link.springer.com/article/10.1007/s40094-018-0314-zOptical nonlinearityEllipsoidal nanoparticlesMagneto-optics |
| spellingShingle | Tayebeh Naseri Fatemeh Pourkhavari Impact of geometry and magneto-optical properties on field enhancement and optical bistability in core–shell nanoparticles Journal of Theoretical and Applied Physics Optical nonlinearity Ellipsoidal nanoparticles Magneto-optics |
| title | Impact of geometry and magneto-optical properties on field enhancement and optical bistability in core–shell nanoparticles |
| title_full | Impact of geometry and magneto-optical properties on field enhancement and optical bistability in core–shell nanoparticles |
| title_fullStr | Impact of geometry and magneto-optical properties on field enhancement and optical bistability in core–shell nanoparticles |
| title_full_unstemmed | Impact of geometry and magneto-optical properties on field enhancement and optical bistability in core–shell nanoparticles |
| title_short | Impact of geometry and magneto-optical properties on field enhancement and optical bistability in core–shell nanoparticles |
| title_sort | impact of geometry and magneto optical properties on field enhancement and optical bistability in core shell nanoparticles |
| topic | Optical nonlinearity Ellipsoidal nanoparticles Magneto-optics |
| url | http://link.springer.com/article/10.1007/s40094-018-0314-z |
| work_keys_str_mv | AT tayebehnaseri impactofgeometryandmagnetoopticalpropertiesonfieldenhancementandopticalbistabilityincoreshellnanoparticles AT fatemehpourkhavari impactofgeometryandmagnetoopticalpropertiesonfieldenhancementandopticalbistabilityincoreshellnanoparticles |