Dielectrophoretically Formed Single Wall Carbon Nanotube Network on Polyether Sulfone

AC dielectrophoresis (DEP) is a useful method to fabricate single wall carbon nanotube (SWCNT) network structures on various kinds of substrates. We report on the fabrication of SWCNT networks with varying densities, on transparent and flexible polyether sulfone (PES) substrates by using DEP. From the scanning electron microscope observations and current‐voltage measurements of the fabricated SWCNT network, we obtain the contour map of the density and conductance as functions of Vp‐p and f. Our results show that the maximum density does not necessarily imply the maximum conductance. We find that there exists an optimum density for the maximum conductance.