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Dead‐end filtration is a facile method to globally align single wall carbon nanotubes (SWCNTs) in large area films with a 2D order parameter, S2D, approaching unity. Uniaxial alignment has been achieved using pristine and hot‐embossed membranes but more sophisticated geometries have yet to be investigated. In this work, three different patterns with radial symmetry and an area of 3.8 cm2 are created...
Dead‐end filtration has proven to effectively prepare macroscopically (3.8 cm2) aligned thin films from solutionbased single‐wall carbon nanotubes (SWCNTs). However, to make this technique broadly applicable, the role of SWCNT length and diameter must be understood. To date, most groups report the alignment of unsorted, large diameter (≈1.4 nm) SWCNTs, but systematic studies on their small diameter...
Single wall carbon nanotubes (SWCNTs) dispersed by negatively charged sodium deoxycholate (DOC) or positively charged cetrimonium bromide (CTAB) are shown to assemble into aligned films (3.8 cm2) on polycarbonate membranes by slow flow dead‐end filtration. Global alignment (S2D max ≈ 0.85) is obtained on both pristine polyvinylpyrrolidone (PVP) coated membranes and those with an intentional 150–600 nm...
1D Crystals
The controllable alignment of carbon nanotubes (CNTs) in large‐area thin‐films has been a longstanding challenge to the scientific community. In article number 2107411, Benjamin S. Flavel and co‐workers develop a custom‐built micro‐fluidic filtration setup that can repeatedly produce globally aligned films over an area of 3.8 cm2 from both positively and negatively charged CNTs.
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