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SEM images for P3-SWCNT films at a fixed SWCNT concentration (~70 μg/mL), SDS concentration (~1.0 mg/mL), environment temperature (~17 °C) and humidity (~50–70%) but varied withdrawal speed: (a) 0.10, (b) 0.15, and (c) 0.20 μm/s. To characterize the alignment of SWCNTs in stripes, high-resolution SEM images were observed.
