The mobility of the head groups results in instantaneous restrictive diameters ranging from 0.2 nm to 0.75 nm as shown in Fig 8, but head groups could open possible diameters as large as 1.2 nm. We explore definitions of what a pore diameter means in this fluctuating pore in the following section. We also note that the densities of monomers and counterions from the gyroid minimal surface do not change significantly with cross-linking and changing solvent.