rus
Issue #4/2025
A. R. Gainutdinov
The Influence of the Dielectric Particle’s Porosity on the Position of the Mie Resonances
The Influence of the Dielectric Particle’s Porosity on the Position of the Mie Resonances
DOI: 10.22184/1993-7296.FRos.2025.19.4.296.303
The dielectric particles with a high refractive index demonstrate Mie resonances in the
infrared region of spectrum, where the typical absorption bands of many hydrocarbons are
observed. The article provides a numerical determination of the dependence of the
refractive index of a dielectric particle located in a target substance matrix on the particle
porosity value. It is shown that an increased particle porosity leads to a linear decrease in
the particle refractive index and to a linear shift of the Mie resonance to the region of short
wavelengths. An estimate is given for the shift in the spectral range of the Mie resonance
manifestation when the particle porosity value is changed by a few percent.
Subscribe to the journal Photonics Russia to read the full article.
The dielectric particles with a high refractive index demonstrate Mie resonances in the
infrared region of spectrum, where the typical absorption bands of many hydrocarbons are
observed. The article provides a numerical determination of the dependence of the
refractive index of a dielectric particle located in a target substance matrix on the particle
porosity value. It is shown that an increased particle porosity leads to a linear decrease in
the particle refractive index and to a linear shift of the Mie resonance to the region of short
wavelengths. An estimate is given for the shift in the spectral range of the Mie resonance
manifestation when the particle porosity value is changed by a few percent.
Subscribe to the journal Photonics Russia to read the full article.
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