Answers are grounded in this paper and cite their sources.
Theoretical analysis finds thermal vibrations increase sound attenuation in amorphous materials, suggesting new insights into sound behavior.
Sound attenuation and internal friction coefficients are calculated for a realistic model of amorphous silicon. It is found that, contrary to previous views, thermal vibrations can induce sound attenuation at ultrasonic and hypersonic frequencies that is of the same order or even larger than in crystals. The reason is the internal strain induced anomalously large Gr\"uneisen parameters of the low-frequency resonant modes.
No takes yet. Share an insight, caveat, or question.
Fabian et al. (1999) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: