Magnetic dipole and electric dipole resonances in TiO2 microspheres at terahertz frequencies
hal.structure.identifier | Center for Integrated Nanotechnologies | |
dc.contributor.author | MITROFANOV, Oleg | |
hal.structure.identifier | Czech Academy of Sciences [Prague] [CAS] | |
dc.contributor.author | DOMENIC, Filip | |
hal.structure.identifier | Institute of Physics | |
dc.contributor.author | KUZEL, P. | |
hal.structure.identifier | Center for Integrated Nanotechnologies | |
dc.contributor.author | RENO, John | |
hal.structure.identifier | Sandia National Laboratories [Albuquerque] [SNL] | |
dc.contributor.author | BRENER, Igal | |
hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
dc.contributor.author | CHUNG, U-Chan | |
hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
dc.contributor.author | ELISSALDE, Catherine | |
hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
dc.contributor.author | MAGLIONE, Mario | |
hal.structure.identifier | Laboratoire de l'intégration, du matériau au système [IMS] | |
dc.contributor.author | MOUNAIX, Patrick | |
dc.date.created | 2015 | |
dc.date.issued | 2015 | |
dc.date.conference | 2015-02-07 | |
dc.description.abstractEn | n a non-magnetic dielectric sphere of high-permittivity ( <20), effective magnetic response occurs as a result of the 1st Mie mode, known as the magnetic dipole resonance. This resonance produces a similar effect as split ring resonators, making it possible to use dielectric spheres as metamaterial components. In the terahertz (THz) part of the spectrum, where dielectrics with ~100 can be found, all-dielectric metamaterials can potentially reduce absorption and provide isotropic and polarization-independent properties. In this contribution, we discuss TiO2 micro-spheres, ~1/10 of the wavelength in diameter. Such spheres are expected to support the magnetic and electric dipole resonances. To detect these resonances in a single TiO2 microsphere we use THz near-field microscopy with the sub-wavelength size aperture probe. This method allows detection of Mie resonances in single sub-wavelength spheres. Fano-type line-shape is observed in the near-field amplitude and phase spectra. The narrow line-width of the magnetic resonance and the subwavelength size of the TiO2 microspheres make them excellent candidates for realizing low-loss THz metamaterials. © (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only. | |
dc.language.iso | en | |
dc.publisher | SPIE | |
dc.subject.en | Terahertz | |
dc.subject.en | Metamaterial | |
dc.subject.en | metamaterials | |
dc.subject.en | dielectric resonator | |
dc.subject.en | near-field imaging | |
dc.subject.en | Mie mode | |
dc.subject.en | TiO2 micro-sphere | |
dc.subject.en | Fano lineshape | |
dc.subject.en | THz spectroscopy | |
dc.title.en | Magnetic dipole and electric dipole resonances in TiO2 microspheres at terahertz frequencies | |
dc.type | Communication dans un congrès | |
dc.identifier.doi | 10.1117/12.2079734 | |
dc.subject.hal | Physique [physics]/Matière Condensée [cond-mat] | |
dc.subject.hal | Sciences de l'ingénieur [physics]/Electromagnétisme | |
bordeaux.country | US | |
bordeaux.conference.city | San Francisco | |
bordeaux.peerReviewed | oui | |
hal.identifier | hal-01263842 | |
hal.version | 1 | |
hal.invited | non | |
hal.proceedings | oui | |
hal.popular | non | |
hal.audience | Internationale | |
hal.origin.link | https://hal.archives-ouvertes.fr//hal-01263842v1 | |
bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.date=2015&rft.au=MITROFANOV,%20Oleg&DOMENIC,%20Filip&KUZEL,%20P.&RENO,%20John&BRENER,%20Igal&rft.genre=unknown |
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