title: Anisotropic micro-cloths fabricated from DNA-stabilized carbon nanotubes: one-stop manufacturing with electrode needles.
abstract: Among a variety of solution-based approaches to fabricate anisotropic films of aligned carbon nanotubes (CNTs), we focus on the dielectrophoretic assembly method using AC electric fields in DNA-stabilized CNT suspensions. We demonstrate that a one-stop manufacturing system using electrode needles can draw anisotropic DNA-CNT hybrid films of 10 to 100 µm in size (i.e., free-standing DNA-CNT micro-cloths) from the remaining suspension into the atmosphere while maintaining structural order. It has been found that a maximal degree of polarization (ca. 40%) can be achieved by micro-cloths fabricated from a variety of DNA-CNT mixtures. Our results suggest that the one-stop method can impart biocompatibility to the downsized CNT films and that the DNA-stabilized CNT micro-cloths directly connected to an electrode could be useful for biofuel cells in terms of electron transfer and/or enzymatic activity.
authors: Institute for Nanotechnology, Kochi University of Technology, Tosa-Yamada, 782-8502 Kochi Japan.
authors: Hiroshi
authors: H
authors: Frusawa
authors: Institute for Nanotechnology, Kochi University of Technology, Tosa-Yamada, 782-8502 Kochi Japan.
authors: Gen
authors: G
authors: Yoshii
keywords: Biofuel cell; Carbon nanotubes; DNA; Depletion; Dielectrophoresis; Free-standing film; Lyotropic liquid crystal