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Among a variety of solution-based approaches to fabricate anisotropic filmsof aligned carbon nanotubes (CNTs), we focus on the dielectrophoretic assemblymethod using AC electric fields in DNA-stabilized CNT suspensions. Wedemonstrate that a one-stop manufacturing system using electrode needles candraw anisotropic DNA-CNT hybrid films of 10-100 $\mu$m in size (i.e.,free-standing DNA-CNT micro-cloths) from the remaining suspension into theatmosphere while maintaining structural order. It has been found that a maximaldegree of polarization (ca. 40 \%) can be achieved by micro-cloths fabricatedfrom a variety of DNA-CNT mixtures. Our results suggest that the one-stopmethod can impart biocompatibility to the downsized CNT films and that theDNA-stabilized CNT micro-cloths directly connected to an electrode could beuseful for biofuel cells in terms of electron transfer and/or enzymaticactivity.

Anisotropic micro-cloths fabricated from DNA-stabilized carbon nanotubes: one-stop manufacturing with electrode needles