Phase Behavior of Two-Dimensional Colloidal Systems in the Presence of Periodic Light Fields | Zendy

Clemens Bechinger | Zendy; Matthias Brünner | Zendy; P. Leǐderer | Zendy

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Phase Behavior of Two-Dimensional Colloidal Systems in the Presence of Periodic Light Fields

Author(s) -

Clemens Bechinger,

Matthias Brünner,

P. Leǐderer

Publication year - 2001

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.86.930

Subject(s) - materials science , spheres , colloid , polystyrene , suspension (topology) , phase transition , intensity (physics) , particle (ecology) , phase (matter) , light intensity , laser , chemical physics , molecular physics , optics , thermodynamics , physics , chemistry , composite material , mathematics , oceanography , quantum mechanics , astronomy , homotopy , pure mathematics , geology , polymer

We investigate the phase behavior of a two-dimensional suspension of charge stabilized polystyrene spheres in the presence of a one-dimensional periodic light field. With increasing light intensity we observe a liquid-solid followed by a solid-liquid transition which are known as laser-induced freezing and melting, respectively. Here we report on measurements where, in addition to the light intensity, the single particle density was also systematically varied. As a result, we obtain for the first time the full thermodynamic information about the system which allows comparison with numerical predictions of other authors.

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