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. 2022 Oct 30;13(11):1863. doi: 10.3390/mi13111863

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

(a) Schematic representation of SWNT alignment by the capillary effect. Adapted with permission from [66], Copyright 2006 IOP Publishing. (b) improved method with funnel-shaped entrances and N₂ flow. Reproduced with permission [67]. Copyright 2007, IOP Publishing.