| CPC B05C 3/02 (2013.01) [B05D 1/18 (2013.01); B05D 7/24 (2013.01); C01B 32/159 (2017.08); C01B 32/168 (2017.08); C01B 32/17 (2017.08); C01B 32/174 (2017.08); H10K 85/221 (2023.02); B82Y 30/00 (2013.01); B82Y 40/00 (2013.01); C01B 2202/02 (2013.01); C01B 2202/04 (2013.01); C01B 2202/06 (2013.01); C01B 2202/08 (2013.01); G03F 7/039 (2013.01); H10K 71/13 (2023.02); Y10T 428/30 (2015.01)] | 12 Claims |

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1. A method for forming a carbon nanotube film, comprising:
injecting a carbon nanotube solution and a filling medium into a container, wherein the filling medium comprises a solid substance comprising molecular sieves, polytetrafluoroethylene balls, and glass ball fillers;
clamping a substrate on a pulling machine;
immersing the substrate vertically in the carbon nanotube solution;
injecting, along the substrate or a sidewall of the container, a sealing liquid that is immiscible with the carbon nanotube solution;
pulling the substrate up to form a carbon nanotube film on the substrate, wherein the carbon nanotube film is parallel to an interface between the sealing liquid and the carbon nanotube solution.
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