Toward broadband mechanical spectroscopy
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Author(s)
Hecksher, Tina
Dyre, Jeppe C.
Torchinsky, Darius H.
Klieber, Christoph
Johnson, Jeremy Andrew
Nelson, Keith Adam
Date Issued
August 2017
Journal
Proceedings of the National Academy of Sciences
Publisher
National Academy of Sciences (U.S.)
Citation
Hecksher, Tina et al. “Toward Broadband Mechanical Spectroscopy.” Proceedings of the National Academy of Sciences 114, 33 (August 2017): 8710–8715 © 2017 National Academy of Sciences
Version
Final published version
Abstract
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. Keywords: viscous liquids; broadband mechanical spectroscopy; mode-coupling theory
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1073/PNAS.1707251114
