Near-field probing of the THz Mie magnetic mode in a single sub-wavelength TiO2 sphere

O. Mitrofanov (1) , F. Dominec (2) , M. Navarro-Cía (3) , P. Kuzel (2) , J. L. Reno (3) , I. Brener (3) , P. Mounaix (4)

1 UCL - University College of London [London]
2 Institute of Physics ASCR
3 Center for Integrated Nanotechnologies
4 LOMA - Laboratoire Ondes et Matière d'Aquitaine

We report the first investigation of single Titanium Dioxide (TiO2) sub-wavelength size (20-30μm) spheres and ellipsoids using THz near-field microscopy. The Mie resonances are observed in individual particles allowing characterization of the resonance line-width and its dependence on the particle dimensions and shape.

Mots clés: Magnetic resonance imaging; Ellipsoids; Resonant frequency; Dielectrics; Laboratories; Magnetic confinement; Probes

Domaines: Physique [physics]

O. Mitrofanov, F. Dominec, M. Navarro-Cía, P. Kuzel, J. L. Reno, et al.. Near-field probing of the THz Mie magnetic mode in a single sub-wavelength TiO2 sphere. 2014 39th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz), Sep 2014, Tucson, AZ, United States. pp.1-1, ⟨10.1109/IRMMW-THz.2014.6956342⟩. ⟨hal-01555866⟩