Measuring the equation of state of a hard-disc fluid

Brunner, Matthias; Bechinger, Clemens; Herz, Uli; von Grünberg, Hans Hennig

Measuring the equation of state of a hard-disc fluid

Files

Brunner_0-413077.pdf(305.27 KB)

Date

2003

Authors

Brunner, Matthias

Bechinger, Clemens

Herz, Uli

von Grünberg, Hans Hennig

Publication type

Journal article

Publication status

Published

Published in

Europhysics Letters (EPL) ; 63 (2003), 6. - pp. 791-797. - ISSN 0295-5075. - eISSN 1286-4854

Abstract

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.

Subject (DDC)

530 Physics

Cite This

ISO 690

BRUNNER, Matthias, Clemens BECHINGER, Uli HERZ, Hans Hennig VON GRÜNBERG, 2003. Measuring the equation of state of a hard-disc fluid. In: Europhysics Letters (EPL). 63(6), pp. 791-797. ISSN 0295-5075. eISSN 1286-4854. Available under: doi: 10.1209/epl/i2003-00495-1

BibTex

@article{Brunner2003Measu-39433,
  year={2003},
  doi={10.1209/epl/i2003-00495-1},
  title={Measuring the equation of state of a hard-disc fluid},
  number={6},
  volume={63},
  issn={0295-5075},
  journal={Europhysics Letters (EPL)},
  pages={791--797},
  author={Brunner, Matthias and Bechinger, Clemens and Herz, Uli and von Grünberg, Hans Hennig}
}

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