Relation Between Pore Size and the Compressibility of a Confined Fluid

Autor:	Gor, Gennady Y., Siderius, Daniel W., Rasmussen, Christopher J., Krekelberg, William P., Shen, Vincent K., Bernstein, Noam
Rok vydání:	2015
Předmět:	Physics - Chemical Physics Condensed Matter - Statistical Mechanics
Zdroj:	J. Chem. Phys. 143, 194506 (2015)
Druh dokumentu:	Working Paper
DOI:	10.1063/1.4935430
Popis:	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 these 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. Comment: 6 pages, 2 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1511.00918 Zobrazit plný text záznamu View this record from Arxiv