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Electric and Optical Properties of CNTs/Ultraviolet Curing Resin Composite Film with Traveling Electric Field Application

The target of this study is that the electrically conductive and light transmissive CNTs/polymer composite film is made by applying traveling electric field. In the previous study, it was found that the CNTs in the uncured polymer suspension can be aligned by applying traveling electric field from the underside to the suspension in the whole coated area on the cover glass (18 mm×18 mm). In this study, to improve the dispersibility of the CNTs in the suspension, the CNTs are treated with a surfactant. Moreover, to expand the applicability of the technique of the traveling electric field application, the multiple electrode is located over the suspension coated on the slide glass, and the traveling electric field is applied from the upper side to the suspension. If this technique is established, the composite film in which the CNTs are aligned can be easily coated on the thick object. The electrical resistivity and light transmittance of the produced composite film are measured. The dispersibility of the CNTs in the composite by the surfactant treatment is improved, although the surfactant treatment does not necessarily reduce the electrical resistivity. In addition, the CNTs in the suspension coated on the thick object can be aligned by applying the traveling electric field from the upper side to the suspension.