Mechanical Spectroscopy: Some Applications On Structural Changes And Relaxation Dynamics In Soft Matter

Archives of Metallurgy and Materials

Xuebang Wu¹  Changsong Liu¹ 

[1] KEY LABORATORY OF MATERIALS PHYSICS, INSTITUTE OF SOLID STATE PHYSICS, CHINESE ACADEMY OF SCIENCES, P.O. BOX 1129, HEFEI, ANHUI, 230031, P.R. CHINA

关键词: Keywords: Polymer segmental dynamics;    colloids;    granular matter;    mechanical spectroscopy;   

DOI  :  10.1515/amm-2015-0351

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

The general trend in soft matter is to study systems of increasing complexity covering a wide range in time and frequency. Mechanical spectroscopy is a powerful tool for understanding the structure and relaxation dynamics of these materials over a large temperature range and frequency scale. In this work, we collect a few recent applications using low-frequency mechanical spectroscopy for elucidating the structural changes and relaxation dynamics in soft matter, largely based on the author’s group. We illustrate the potential of mechanical spectroscopy with three kinds of soft materials: colloids, polymers and granular systems. Examples include structural changes in colloids, segmental relaxations in amorphous polymers, and resonant dissipation of grain chains in three-dimensional media. The present work shows that mechanical spectroscopy has been applied as a necessary and complementary tool to study the dynamics of such complex systems.

【 授权许可】

Unknown