70 citations · 114 across the 9 of their papers we have counts for
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Rapid Determination of Nanodiamond Size Distribution and Impurity Concentration from Raman Spectra Using an Open Machine-Learning Toolbox
Sergei V. Koniakhin, Oleg I. Utesov, Vitaly I. Korepanov +1
Ready-to-use numerical toolbox for nanodiamond Raman spectra calculation and fit is presented. The developed theoretical approach allows accounting for arbitrary nanoparticle size-…
Phase locking of ring-shaped exciton-polariton condensates to coherent optical drive
A. N. Osipov, S. V. Koniakhin, O. I. Utesov +2
The effect of an additional quasi-resonant drive on the dynamics of the ring-shaped incoherently pumped polariton condensates carrying angular momentum (vorticity) is studied theor…
Raman peak shift and broadening in crystalline nanoparticles with lattice impurities
S. V. Koniakhin, O. I. Utesov, A. G. Yashenkin
The effect of point-like lattice impurities on nanoparticle Raman spectra (RS) is studied using both numerical and analytical methods. Particular cases of replacement atoms of vari…
Localized and extended collective optical phonon modes in regular and random arrays of contacting nanoparticles: escape from phonon confinement
S. V. Koniakhin, O. I. Utesov, A. G. Yashenkin
In the present paper, we utilize the coupled-oscillator model describing the hybridization of optical phonons in touching and/or overlapping particles in order to study the Raman s…
Coupled oscillators model for hybridized optical phonon modes in contacting nanosized particles and quantum dot molecules
S. V. Koniakhin, O. I. Utesov, A. G. Yashenkin
Modification of optical phonon spectra in contacting nanoparticles as compared to the single ones is studied. Optical phonons in dielectric and semiconducting particles obey the Eu…
Effects of bond disorder and surface amorphization on optical phonon lifetimes and Raman peak shape in crystalline nanoparticles
Oleg I. Utesov, Sergei V. Koniakhin, Andrey G. Yashenkin
Optical phonons in nanoparticles with the randomness of interatomic bonds are considered both analytically and numerically. For weak dilute disorder two qualitatively different reg…