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High-pressure Behavior of Dielectric Constant in a Binary Critical Mixture by Drozd-Rzoska, Aleksandra; Rzoska, Sylwester J. is a Physics and Astronomy article available to read on EtoBox.

What is High-pressure Behavior of Dielectric Constant in a Binary Critical Mixture about?

An alternative design of the measurement capacitor for high-pressure studies of complex liquids or soft matter systems is presented. Subsequently, results for the precritical anomaly of dielectric constant in 1-nitropropane-octane critical mixture are reported. First, the pressure dependence of the critical consolute temperature T\_{C} up to P=0.55GPa was determined and portrayed using the derivative-based analysis. Second, temperature and pressure evolutions of dielectric constant on approaching the critical consolute point at (T\_{C}=304.1K and P\_{C}=403MPa) were studied. They revealed that the pretransitional anomaly ɛ(P→P\_{C}) is notably more pronounced than for ɛ(T→T\_{C}). For both paths, the static domain extends even to as low frequency as f=100Hz, whereas for tests under atmospheric pressure, they require at least f=100kHz. The discussion of the impact of correction-to-scaling terms, including the unique case of the pressure paths, is also presented.

Who reads High-pressure Behavior of Dielectric Constant in a Binary Critical Mixture?

Author

Drozd-Rzoska, Aleksandra; Rzoska, Sylwester J.

Publisher

The American Physical Society; American Physical Society; American Physical Society (APS) (ISSN 1063-651X)

Published

2020

Language

EN

Field

Physics and Astronomy (Physical Sciences)