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Obstruction factor of SWCNT buckypapers for characterizing permeability: (A) obstruction factor as a function of SWCNT length; (B) obstruction factor as a function of the SWCNT volume fraction. I and II represent the lattice Boltzmann and discrete random walk methods, respectively. ‘Thin’ and ‘thick’ are two different SWCNT models described in Section 2.5.
