Temperature Changes of Spectra of the Lattice and Surface Oscillations of Organic Molecular Nano-Crystals (COMPUTER Modeling)

TL;DR

This study uses computer modeling to analyze how temperature affects the spectra of lattice and surface oscillations in organic molecular nano-crystals, revealing temperature-dependent spectral lines and non-linear behaviors.

Contribution

It provides new insights into the temperature dependence of vibrational spectra in organic nano-crystals with vacancies through detailed computational analysis.

Findings

Additional spectral lines change monotonously with temperature.

Surface oscillation spectra vary with temperature.

Low-frequency lines exhibit non-linear temperature dependence.

Abstract

Dependence of frequency spectra of the lattice oscillations of organic nano-crystals on temperature is studied at presence of vacancies in structure. In a frequency spectrum a number of additional lines monotonously changing with temperature is observed. Also, the spectrum of the surface oscillations is calculated at temperature change. At the same time, the low-frequency line has non-linear behavior with temperature change.