Measuring the equation of state of a hard-disc fluid

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2003
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Brunner, Matthias
Herz, Uli
von Grünberg, Hans Hennig
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Europhysics Letters (EPL). 2003, 63(6), pp. 791-797. ISSN 0295-5075. eISSN 1286-4854. Available under: doi: 10.1209/epl/i2003-00495-1
Zusammenfassung

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.

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ISO 690BRUNNER, Matthias, Clemens BECHINGER, Uli HERZ, Hans Hennig VON GRÜNBERG, 2003. Measuring the equation of state of a hard-disc fluid. In: Europhysics Letters (EPL). 2003, 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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