Measuring the equation of state of a hard-disc fluid

被引：18

作者：

Brunner, M ^{[1
]}

Bechinger, C ^{[1
]}

Herz, U ^{[1
]}

von Grünberg, HH ^{[1
]}

机构：

[1] Univ Konstanz, Fachbereich Phys, D-78457 Constance, Germany

来源：

EUROPHYSICS LETTERS | 2003年 / 63卷 / 06期

关键词：

D O I：

10.1209/epl/i2003-00495-1

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We use video microscopy to study a two-dimensional (2D) model fluid of charged colloidal particles suspended in water and compute the pressure from the measured particle configurations. Direct experimental control over the particle density by means of optical tweezers allows the precise measurement of pressure as a function of density. We compare our data with theoretical predictions for the equation of state, the pair-correlation function and the compressibility of a hard-disc fluid and find good agreement, both for the fluid and the solid phase. In particular, the location of the transition point agrees well with results from Monte Carlo simulations.

引用

页码：791 / 797

页数：7

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