Structure and dynamics of two-dimensional colloidal systems in circular cavities

Bubeck, Ralf; Leiderer, Paul; Bechinger, Clemens

Structure and dynamics of two-dimensional colloidal systems in circular cavities

Dateien

288_progrcollpolymsci_2001.pdfGröße: 2.75 MBDownloads: 398

Datum

2001

Autor:innen

Bubeck, Ralf

Leiderer, Paul

Bechinger, Clemens

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Physik

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Progress in Colloid and Polymer Science. 2001, 118, pp. 73-76. Available under: doi: 10.1007/3-540-45725-9_16

Zusammenfassung

The properties of 2D colloidal crystals have been widely investigated over the last 20 years. Recently, it has been recognized that colloids are also useful for the investigation of systems comprised of only a few particles. We study the melting behaviour of a finite number (N < 30) of paramagnetic colloidal spheres (b = 4.5 mm) in 2D circular cavities. By applying a magnetic field, B, the interaction strength between the particles is varied. At high B, i.e. strong dipole interaction, the particles are arranged in a highly ordered shell-like structure. With decreasing B we observe a loss of angular order between adjacent shells. Upon further reduction of the external field, however, different scenarios are observed. For cavities with hard-wall confinement potentials. In both cases the system melts completely for small magnetic fields.

Fachgebiet (DDC)

530 Physik

Schlagwörter

colloids, two-dimensional, two-dimensional freezing, phase transitions, classical atoms

Zitieren

ISO 690

BUBECK, Ralf, Paul LEIDERER, Clemens BECHINGER, 2001. Structure and dynamics of two-dimensional colloidal systems in circular cavities. In: Progress in Colloid and Polymer Science. 2001, 118, pp. 73-76. Available under: doi: 10.1007/3-540-45725-9_16

BibTex

@article{Bubeck2001Struc-9525,
  year={2001},
  doi={10.1007/3-540-45725-9_16},
  title={Structure and dynamics of two-dimensional colloidal systems in circular cavities},
  volume={118},
  journal={Progress in Colloid and Polymer Science},
  pages={73--76},
  author={Bubeck, Ralf and Leiderer, Paul and Bechinger, Clemens}
}

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