1-D Cluster Array at the Three Phase Contact Line in Diluted Colloids Subjected to A.C. Electric Fields

Details 1-D Cluster Array at the Three Phase Contact Line in Diluted Colloids Subjected to A.C. Electric Fields 1-D Cluster Array at the Three Phase Contact Line in Diluted Colloids Subjected to A.C. Electric Fields

2011-03-29

arxiv.org/abs/1103.5553v3

Phys. Rev. E 83, 047301 (2011)

Physics

Condensed Matter

Soft Condensed Matter

There is supplementary information (see refs. 24, 27), which is available upon request (wens@fisica.unav.es)

Scientific paper

10.1103/PhysRevE.83.047301

Colloidal particles provide an efficient mean of building multiple scale structured materials from colloidal dispersions. In this Brief Report, we account for experimental evidence on the formation of a colloidal cluster array at a three-phase contact line. We study the influence of low frequency external alternating electric fields on a diluted colloidal dispersion opened to the air. We focus on the cluster formation and their evolution in the meniscus by measuring characteristic times and lengths. We observe that the clusters are separated by a well-defined length and that, in our experimental conditions, they survive between five a fifteen minutes. These new results could be of technological relevance in building tailored colloidal structures in non-patterned substrates.

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