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Electrowetting of aligned carbon nanotube (CNT) films is investigated by the sessile drop method by dispensing deionized (DI) water or 0.03 M NaCl droplets onto aligned CNT films assembled on a copper substrate. The electrowetting strategy might be invoked to controllably reduce or tailor the interfacial tension between CNTs and high-surface-tension organic monomers when infiltrating the monomers into prealigned nanotube films for preparation of CNT-reinforced composites.

A novel time-dependent percolation transition is observed in sheared carbon nanotube (CNT) composites. Microstructures characterization shows that the CNTs have aligned along the shear flow direction, which leads to the dramatic increase of the percolation threshold and thereby the dramatic decreases of the electrical conductivities.