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Dielectric Response of Glass-Forming Liquids in the Nonlinear Regime


Abstract Broadband dielectric spectroscopy is a powerful technique for understanding the dynamics in supercooled liquids. It generates information about the timescale of the orientational motions of molecular dipoles within the liquid. However, dynamics of liquids measured in the non-linear response regime has recently become an area of significant interest, because additional information can be obtained compared with linear response measurements.

The first part of this thesis describes nonlinear dielectric relaxation experiments performed on various molecular glass forming-liquids, with an emphasis on the response at high frequencies (excess wing). A significant nonlinear dielectric effect (NDE) was found to persist in these modes, and ... (more)
Created Date 2016
Contributor Samanta, Subarna (Author) / Richert, Ranko (Advisor) / Steimle, Timothy (Committee member) / Wolf, George H (Committee member) / Arizona State University (Publisher)
Subject Chemistry / Condensed matter physics / Adam-Gibbs theory / Excess Wings / Glass-forming Liquids / Heterogeneity / Nonlinear Dielectric effects / Tme-resolved measurements
Type Doctoral Dissertation
Extent 195 pages
Language English
Copyright
Reuse Permissions All Rights Reserved
Note Doctoral Dissertation Chemistry 2016
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS


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Description Dissertation/Thesis