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Proc SPIE Int Soc Opt Eng. 2010;7376:73761C1-73761C13.

Long-range attraction in aqueous colloidal suspensions.

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Department of Bioengineering, Box 355061, University of Washington, Seattle, WA 98195, United States.


Long-range attractions in aqueous suspensions were observed between polymeric microspheres and also between microspheres and a gel bead. Attractive displacements were consistently seen even between like-charged entities, and they were observed over spans as large as 2 mm. Such behaviors are unexpected, and may reside in a long-range attraction mechanism.

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