The Scaling of Relaxation Processes—Revisited

Kremer, Friedrich; Loidl, A.

doi:10.1007/978-3-319-72706-6_1

Cited by 29 publications

(92 citation statements)

References 64 publications

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“…26 Based on the experimental results it was suggested that the TV g scaling works for most of the glass-forming systems only when considering a relatively small density changes. 13,27 On the other hand, in the literature we can also nd some evidence that it can be valid even up to 4.55 GPa (for cumene). 28 Apart from the high-pressure studies, a valuable source of information on the glass transition dynamics is the measurements carried out in conned geometry.…”

Section: Introductionmentioning

confidence: 68%

“…[7][8][9][10][11][12][13][14] It can be linked with the repulsive part of the Lennard-Jones potential. 13,[15][16][17] Furthermore, g correlates with the thermodynamic quantities and can be identied with the Grüneisen constant. [18][19][20] The density scaling idea has proven to work well for many molecular liquids, e.g.…”

Section: Introductionmentioning

confidence: 99%

“…van der Waals liquids, ionic liquids, and polymers. 11,13,14,21 However, it is also known to fail for strongly associated liquids. 11,13,[22][23][24] One of the most prominent example of such material is dipropylene glycol (DPG).…”

Section: Introductionmentioning

confidence: 99%

“…11,13,14,21 However, it is also known to fail for strongly associated liquids. 11,13,[22][23][24] One of the most prominent example of such material is dipropylene glycol (DPG). 25 Recently, Hansen and co-workers have demonstrated that the density scaling idea applies also for DPG, on the condition that the time scale of the a-relaxation refers to the equilibrium liquid far from the glass transition.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Testing density scaling in nanopore-confinement for hydrogen-bonded liquid dipropylene glycol

2019

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Section: Introductionmentioning

confidence: 68%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Testing density scaling in nanopore-confinement for hydrogen-bonded liquid dipropylene glycol

2019

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“…The glass transition remains the grand challenge of the condensed matter physics and material engineering (Kennedy, 2005;Berthier and Ediger, 2016;Kremer and Loidl, 2018;Royall et al, 2018;Tong and Tanaka, 2018). Decades of research yielded the excellent experimental and theoretical evidence, based on increasingly sophisticated approaches (Donth, 2007;Berthier and Ediger, 2016;Kremer and Loidl, 2018;Royall et al, 2018;Tong and Tanaka, 2018). However, the long-awaited cognitive breakthrough is still elusive.…”

Section: Introductionmentioning

confidence: 99%

Pressure-Related Universal Previtreous Behavior of the Structural Relaxation Time and Apparent Fragility

Drozd-Rzoska

2019

Front. Mater.

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The report presents the evidence for the hypothetically "universal" previtreous behavior of the pressure related apparent fragility: m T (P) ∞1/ (P * − P), where P * is the extrapolated singular pressure. This finding was the basis for deriving the "model-free" dependence for the pressure evolution of the structural relaxation time: τ (P) = τ P o (P * − P) −. All these led to the new way of testing the dynamic crossover phenomenon via 1/m T (P) vs. P plot. Finally, the behavior of electric conductivity in the previtreous domain is discussed. The experimental evidence covers 8 * OCB (liquid crystal), EPON 828 (resin), diisobutyl phthalate, and propylene carbonate (low molecular weight liquids). Experiments were carried up to extreme P∼ 2.2 GPa, in the "bulk" measurement capacitor. This report also contains a summary of existing descriptions of the pressure evolution of structural relaxation time or viscosity on approaching the glass transition.

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Dynamics and Proton Conduction of Heterogeneously Confined Imidazole in Porous Coordination Polymers

et al. 2023

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The nanoconfinement of proton carrier molecules may contribute to the lowing of their proton dissociation energy. However, the free proton transportation does not occur as easily as in liquid due to the restricted molecular motion from surface attraction. To resolve the puzzle, herein, imidazole is confined in the channels of porous coordination polymers with tunable geometries, and their electric/structural relaxations are quantified. Imidazole confined in a square-shape channels exhibits dynamics heterogeneity of core-shellcylinder model. The core and shell layer possess faster and slower structural dynamics, respectively, when compared to the bulk imidazole. The dimensions and geometry of the nanochannels play an important role in both the shielding of the blocking effect from attractive surfaces and the frustration filling of the internal proton carrier molecules, ultimately contributing to the fast dynamics and enhanced proton conductivity.

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The Scaling of Relaxation Processes—Revisited

Cited by 29 publications

References 64 publications

Testing density scaling in nanopore-confinement for hydrogen-bonded liquid dipropylene glycol

Testing density scaling in nanopore-confinement for hydrogen-bonded liquid dipropylene glycol

Pressure-Related Universal Previtreous Behavior of the Structural Relaxation Time and Apparent Fragility

Dynamics and Proton Conduction of Heterogeneously Confined Imidazole in Porous Coordination Polymers

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