Collapse of Gels in an Electric Field

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Science  29 Oct 1982:
Vol. 218, Issue 4571, pp. 467-469
DOI: 10.1126/science.218.4571.467


An infinitesimal change in electric potential across a polyelectrolyte gel produces a discrete, reversible volume change. The volume of the collapsed gel can be several hundred times smaller than that of the swollen gel.