Journal
NANOSCALE
Volume 8, Issue 18, Pages 9721-9726Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5nr07965a
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Funding
- Russian Science Foundation [15-19-00172, 15-19-30023]
- Dynasty Foundation
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Enhancement of optical response with high-index dielectric nanoparticles is attributed to the excitation of their Mie-type magnetic and electric resonances. Here we study Raman scattering from crystalline silicon nanoparticles and reveal that magnetic dipole modes have a much stronger effect on the scattering than electric modes of the same order. We demonstrate experimentally a 140-fold enhancement of the Raman signal from individual silicon spherical nanoparticles at the magnetic dipole resonance. Our results confirm the importance of the optically-induced magnetic response of subwavelength dielectric nanoparticles for enhancing light-matter interactions.
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