Relation between pore size and the compressibility of a confined fluid

Gennady Y. Gor; Daniel W. Siderius; Christopher J. Rasmussen; William P. Krekelberg; Vincent K. Shen; Noam Bernstein

doi:10.1063/1.4935430

Relation between pore size and the compressibility of a confined fluid

Gennady Y. Gor, Daniel W. Siderius, Christopher J. Rasmussen, William P. Krekelberg, Vincent K. Shen, Noam Bernstein

Research output: Contribution to journal › Article › peer-review

43 Scopus citations

Abstract

When a fluid is confined to a nanopore, its thermodynamic properties differ from the properties of a bulk fluid, so measuring such properties of the confined fluid can provide information about the pore sizes. Here, we report a simple relation between the pore size and isothermal compressibility of argon confined in such pores. Compressibility is calculated from the fluctuations of the number of particles in the grand canonical ensemble using two different simulation techniques: conventional grand-canonical Monte Carlo and grand-canonical ensemble transition-matrix Monte Carlo. Our results provide a theoretical framework for extracting the information on the pore sizes of fluid-saturated samples by measuring the compressibility from ultrasonic experiments.

Original language	English (US)
Article number	194506
Journal	Journal of Chemical Physics
Volume	143
Issue number	19
DOIs	https://doi.org/10.1063/1.4935430
State	Published - Nov 21 2015
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Physics and Astronomy
Physical and Theoretical Chemistry

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10.1063/1.4935430

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title = "Relation between pore size and the compressibility of a confined fluid",

abstract = "When a fluid is confined to a nanopore, its thermodynamic properties differ from the properties of a bulk fluid, so measuring such properties of the confined fluid can provide information about the pore sizes. Here, we report a simple relation between the pore size and isothermal compressibility of argon confined in such pores. Compressibility is calculated from the fluctuations of the number of particles in the grand canonical ensemble using two different simulation techniques: conventional grand-canonical Monte Carlo and grand-canonical ensemble transition-matrix Monte Carlo. Our results provide a theoretical framework for extracting the information on the pore sizes of fluid-saturated samples by measuring the compressibility from ultrasonic experiments.",

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T1 - Relation between pore size and the compressibility of a confined fluid

AU - Gor, Gennady Y.

AU - Siderius, Daniel W.

AU - Rasmussen, Christopher J.

AU - Krekelberg, William P.

AU - Shen, Vincent K.

AU - Bernstein, Noam

PY - 2015/11/21

Y1 - 2015/11/21

N2 - When a fluid is confined to a nanopore, its thermodynamic properties differ from the properties of a bulk fluid, so measuring such properties of the confined fluid can provide information about the pore sizes. Here, we report a simple relation between the pore size and isothermal compressibility of argon confined in such pores. Compressibility is calculated from the fluctuations of the number of particles in the grand canonical ensemble using two different simulation techniques: conventional grand-canonical Monte Carlo and grand-canonical ensemble transition-matrix Monte Carlo. Our results provide a theoretical framework for extracting the information on the pore sizes of fluid-saturated samples by measuring the compressibility from ultrasonic experiments.

AB - When a fluid is confined to a nanopore, its thermodynamic properties differ from the properties of a bulk fluid, so measuring such properties of the confined fluid can provide information about the pore sizes. Here, we report a simple relation between the pore size and isothermal compressibility of argon confined in such pores. Compressibility is calculated from the fluctuations of the number of particles in the grand canonical ensemble using two different simulation techniques: conventional grand-canonical Monte Carlo and grand-canonical ensemble transition-matrix Monte Carlo. Our results provide a theoretical framework for extracting the information on the pore sizes of fluid-saturated samples by measuring the compressibility from ultrasonic experiments.

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Relation between pore size and the compressibility of a confined fluid

Abstract

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