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Local order variations in confined hard-sphere fluids
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10.1063/1.4825176
/content/aip/journal/jcp/139/16/10.1063/1.4825176
http://aip.metastore.ingenta.com/content/aip/journal/jcp/139/16/10.1063/1.4825176
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Anisotropic structure factor for a hard-sphere fluid confined between hard planar surfaces. (a) Theoretical and (b) experimental ( , ) are shown for a reduced slit width of = 2.10σ and bulk number density = 0.75σ−3. The dark red feature at = 0 in the experimental data is diffraction from the confining channel array, which should be neglected in the comparison. The experimental data are taken from Ref. 29 . (c) The corresponding isotropic bulk () for = 0.75σ−3.

Image of FIG. 2.
FIG. 2.

Theoretical anisotropic structure factor as in Fig. 1 , but for different slit widths. The reduced slit widths are (a) = 1.05σ, (b) 1.60σ, (c) 2.05σ, (d) 2.55σ, (e) 3.00σ, and (f) 3.50σ.

Image of FIG. 3.
FIG. 3.

Number density profiles () for the hard-sphere fluid confined between hard planar surfaces. The reduced slit widths range from = 1.05σ to 4.00σ.

Image of FIG. 4.
FIG. 4.

Excess adsorption Γ and average volume fraction ϕ of hard spheres in the slit between two surfaces as functions of surface separation. The dashed curve shows the volume fraction in bulk.

Image of FIG. 5.
FIG. 5.

Ensemble-averaged local density correlation function ⟨()(, , )⟩ for the reduced slit width = 1.05σ. In the bottom part of the figure a contour plot of the function is shown and in the top part the same plot is illustrated in a 3D manner with peak heights proportional to the function value. The gray color denotes a narrow interval around the value zero.

Image of FIG. 6.
FIG. 6.

Ensemble-averaged local density correlation function ⟨()(, , )⟩ corresponding to the anisotropic structure factors of Fig. 2 . The reduced slit widths are (a) = 1.05σ, (b) 1.60σ, (c) 2.05σ, (d) 2.55σ, (e) 3.00σ, and (f) 3.50σ.

Image of FIG. 7.
FIG. 7.

Local density ( )( , , ) at coordinate ( , ) around a particle in the slit between two hard surfaces, when the particle is located on the axis at coordinate . Data are shown for the reduced slit width = 2.05σ and three different particle positions: (a) in contact with one surface, (b) at the density minimum, and (c) in the slit center. The gray region depicts the excluded volume around the particle.

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/content/aip/journal/jcp/139/16/10.1063/1.4825176
2013-10-23
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Local order variations in confined hard-sphere fluids
http://aip.metastore.ingenta.com/content/aip/journal/jcp/139/16/10.1063/1.4825176
10.1063/1.4825176
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