Phase behavior of two-dimensional colloidal systems in the presence of periodic light fields

被引:126
作者
Bechinger, C [1 ]
Brunner, M [1 ]
Leiderer, P [1 ]
机构
[1] Univ Konstanz, Dept Phys, D-78457 Constance, Germany
关键词
D O I
10.1103/PhysRevLett.86.930
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
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.
引用
收藏
页码:930 / 933
页数:4
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