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Two Components: Liquid–Liquid Systems

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A pressure-composition phase diagram explicitly describes the behavior of an ideal solution of two volatile liquids under varying pressures and compositions. A pressure-composition diagram has two main curves. The bubble point curve represents the plot of pressure versus liquid mole fraction. It indicates the pressure at which the first bubble of vapor forms from the liquid phase as the system pressure decreases.The dew point curve is the pressure versus vapor mole fraction. It indicates the...

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Related Experiment Video

Updated: Jun 17, 2026

Microtensiometer for Confocal Microscopy Visualization of Dynamic Interfaces

Microtensiometer for Confocal Microscopy Visualization of Dynamic Interfaces

Published on: September 9, 2022

Instantaneous liquid interfaces.

Adam P Willard¹, David Chandler

¹Department of Chemistry, University of California, Berkeley, California 94720, USA.

The Journal of Physical Chemistry. B

|January 9, 2010

Summary

This summary is machine-generated.

A new method identifies liquid interfaces using atomic coordinates and a coarse-grained density field. This technique visualizes liquid-vapor and liquid-protein interfaces effectively in simulations.

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Area of Science:

Computational chemistry
Materials science
Biophysics

Background:

Accurate identification of liquid interfaces is crucial for understanding molecular behavior.
Existing methods may lack simplicity or broad applicability.

Purpose of the Study:

To present a straightforward computational procedure for defining liquid interfaces from atomic data.
To demonstrate the utility of this method in molecular dynamics simulations.

Main Methods:

Construction of a coarse-grained density field from atomic coordinates.
Definition of the liquid interface as a surface of constant density within this field.

Main Results:

The procedure successfully identifies liquid-vapor interfaces in molecular dynamics simulations of water.
The method also provides useful visualizations of liquid-protein interfaces.

Conclusions:

This simple coarse-graining approach offers an effective way to delineate and visualize liquid interfaces.
The technique is applicable to various systems, including complex biological interfaces.