Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Translational and reorientational dynamics in deep eutectic solvents   We performed rheological measurements of the typical deep eutectic solvents
(DESs) glyceline, ethaline, and reline in a very broad temperature and dynamic
range, extending from the low-viscosity to the high-viscosity
supercooled-liquid regime. We find that the mechanical compliance spectra can
be well described by the random free-energy barrier hopping model, while the
dielectric spectra on the same materials involve significant contributions
arising from reorientational dynamics. The temperature-dependent viscosity and
structural relaxation time, revealing non-Arrhenius behavior typical for glassy
freezing, are compared to the ionic dc conductivity and relaxation times
determined by broadband dielectric spectroscopy. For glyceline and ethaline we
find essentially identical temperature dependences for all dynamic quantities.
These findings point to a close coupling of the ionic and molecular
translational and reorientational motions in these systems. However, for reline
the ionic charge transport appears decoupled from the structural and
reorientational dynamics, following a fractional Walden rule. Especially, at
low temperatures the ionic conductivity in this DES is enhanced by about one
decade compared to expectations based on the temperature dependence of the
viscosity. The results for all three DESs can be understood without invoking a
revolving-door mechanism previously considered as a possible charge-transport
mechanism in DESs.

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The categories of this paper are: atom-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: eess
1
The categories of this paper are: cs
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The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: bayes-an
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The categories of this paper are: chem-ph
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The categories of this paper are: nlin
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The categories of this paper are: hep-ex
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The categories of this paper are: hep-lat
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The categories of this paper are: q-alg
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The categories of this paper are: plasm-ph