Tuesday, November 4, 2014

'Swiss cheese' membrane with adjustable holes

The pore size of the smart membranes can be adjusted from the outside, experts report. This is very attractive in applications such as biosensors or chemical analysis. The ‘Swiss cheese’ structure is characteristic of many polymer membranes and is now modified by introducing iron within the polymer. Using an electric signal or a chemical reaction, the pore size can be adjusted. The key to this is controlled adding or extracting of electrons to and from iron.

from Geochemistry News -- ScienceDaily http://ift.tt/1scvbDR


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