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arXiv · 2402.17335

Unified study of viscoelasticity and sound damping in hard and soft amorphous solids

Hideyuki Mizuno·Kuniyasu Saitoh·Yusuke Hara·Atsushi Ikeda
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Abstract

Recent research has made significant progress in understanding the non-phonon vibrational states present in amorphous materials. It has been established that their vibrational density of states follows non-Debye scaling laws. Here, we show that the non-Debye scaling laws play a crucial role in determining material properties of a broad range of amorphous solids, from ``hard" amorphous solids like structural glasses to ``soft" amorphous solids such as foams and emulsions. We propose a unified framework of viscoelasticity and sound damping for these materials. Although these properties differ significantly between hard and soft amorphous solids, they are determined by the non-Debye scaling laws. We also validate our framework using numerical simulations.

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Hideyuki Mizuno, Kuniyasu Saitoh, Yusuke Hara, Atsushi Ikeda. 2024-02-27. Unified study of viscoelasticity and sound damping in hard and soft amorphous solids. https://doi.org/10.1038/s42005-025-01933-5

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