Substrate-induced phase transitions in two-dimensional colloidal systems

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Progress in Colloid and Polymer Science. 2001, 118, pp. 77-81. Available under: doi: 10.1007/3-540-45725-9_17
Zusammenfassung

We study the phase behaviour of a 2D colloidal system in the presence of a an external periodic 1D potential. As colloidal suspension we use an aqueous suspension of superparamagnetic spheres with a diameter of 4.5 mm. The periodic 1D potential is fabricated by evaporation of thin magnetic nickel lines onto a glass substrate, which is afterwards covered with a protective poly (methyl methacrylate) layer. When the phase behaviour of the colloidal system is investigated as a function of the applied external magnetic field, we observe a promoting effect of the underlying periodic 1D potential to the crystallization of the 2D colloidal system.

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Fachgebiet (DDC)
530 Physik
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colloids, two-dimensional melting, two-dimensional freezing, phase transitions, periodic potential
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ISO 690MANGOLD, Konrad, Ralf BUBECK, Paul LEIDERER, Clemens BECHINGER, 2001. Substrate-induced phase transitions in two-dimensional colloidal systems. In: Progress in Colloid and Polymer Science. 2001, 118, pp. 77-81. Available under: doi: 10.1007/3-540-45725-9_17
BibTex
@article{Mangold2001Subst-8895,
  year={2001},
  doi={10.1007/3-540-45725-9_17},
  title={Substrate-induced phase transitions in two-dimensional colloidal systems},
  volume={118},
  journal={Progress in Colloid and Polymer Science},
  pages={77--81},
  author={Mangold, Konrad and Bubeck, Ralf and Leiderer, Paul and Bechinger, Clemens}
}
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