Strong magnetic response of submicron silicon particles in the infrared.
By A. García‐Etxarri, R. Gómez-Medina, L. Froufe-Pérez, C. López, L. Chantada, F. Scheffold, Javier Aizpurua, M. Nieto-Vesperinas, J. Sáenz. Optics Express, 2010
612 citations recorded by the source corpus.
High-permittivity dielectric particles with resonant magnetic properties are being explored as constitutive elements of new metamaterials and devices. Magnetic properties of low-loss dielectric nanoparticles in the visible or infrared are not expected due to intrinsic low refractive index of optical media in these regimes. Here we analyze the dipolar electric and magnetic response of lossless dielectric spheres made of moderate permittivity materials. For low material refractive index (<∼3) there are no sharp resonances due to strong overlapping between different multipole contributions. However, we find that Silicon particles with index of refraction∼3.5 and radius∼200 nm present strong electric and magnetic dipolar resonances in telecom and near-infrared frequencies, (i.e. at wavelengths≈1.2-2 mm) without spectral overlap with quadrupolar and higher order resonances. The light scattered by these Si particles can then be perfectly described by dipolar electric and magnetic fields.
Subfields: Atomic and Molecular Physics, and Optics, Biomedical Engineering
View Paper: https://www.semanticscholar.org/paper/e8bd49e0eb93b30588702a6d4cb119e240c234e2
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In Atomic and Molecular Physics, and Optics
- Yuri Kivshar
- Boris Lukyanchuk
- Arseniy I. Kuznetsov
- Ari Henrik Sihvola
- Dimitrios C. Tzarouchis
- Andrey Miroshnichenko
- Mark L. Brongersma
- A. Krasnok
In Biomedical Engineering
- Yuri Kivshar
- Andrey Miroshnichenko
- Arseniy I. Kuznetsov
- Dimitrios C. Tzarouchis
- Ari Henrik Sihvola
- Jingbo Zhang
- Yuan Hsing Fu
- Mark L. Brongersma
Citations in the corpus
- Light Scattering by a Dielectric Sphere: Perspectives on the Mie Resonances (2018, background): “Actually, this is particularly interesting phenomenon that enables the magnetic response of a dielectric sphere the optical and near-infrared regime, where magnetic materials are not traditionally available [61,62].”
- Magnetic light (2012, background): “Several theoretical works have also discussed various realistic materials to achieve magnetic response of dielectric particles at terahertz [29-33], near-infrared [29, 34, 35], and what is more important for us, at visible frequencies [33, 36-39].”