Diverse material classes exhibit qualitatively similar behavior when made viscous upon cooling toward the glass transition, suggesting a common theoretical basis. We used seven different measurement methods to determine the mechanical relaxation kinetics of a prototype molecular glass former over a temporal range of 13 decades and over a temperature range spanning liquid to glassy states. The data conform to time–temperature superposition for the main (alpha) process and to a scaling relation of schematic mode-coupling theory. The broadband mechanical measurements demonstrated have fundamental and practical applications in polymer science, geophysics, multifunctional materials, and other areas.
|Tidsskrift||Proceedings of the National Academy of Science of the United States of America|
|Status||Udgivet - 2017|
Hecksher, T., Torchinsky, D., Klieber, C., Johnson, J., Dyre, J. C., & Nelson, K. A. (2017). Toward broadband mechanical spectroscopy. Proceedings of the National Academy of Science of the United States of America, 114(33), 8710-8715. https://doi.org/10.1073/pnas.1707251114