Fabrication of Aligned-Carbon-Nanotube-Composite Paper with High and Anisotropic Conductivity
A functional carbon-nanotube (CNT)-composite paper is described in which the CNTs are aligned. This “aligned-CNT composite paper” is a flexible composite material that has CNT functionality (e.g., electrical conductivity) despite being a paper. An advanced fabrication method was developed to overcom...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | Journal of Nanotechnology |
| Online Access: | http://dx.doi.org/10.1155/2012/819281 |
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| author | Yuki Fujitsuka Takahide Oya |
| author_facet | Yuki Fujitsuka Takahide Oya |
| author_sort | Yuki Fujitsuka |
| collection | DOAJ |
| description | A functional carbon-nanotube (CNT)-composite paper is described in which the CNTs are aligned. This “aligned-CNT composite paper” is a flexible composite material that has CNT functionality (e.g., electrical conductivity) despite being a paper. An advanced fabrication method was developed to overcome the problem of previous CNT-composite papers, that is, reduced conductivity due to random CNT alignment. Aligning the CNTs by using an alternating current (AC) field was hypothesized to increase the electrical conductivity and give the paper an anisotropic characteristic. Experimental results showed that a nonionic surfactant was not suitable as a CNT dispersant for fabricating aligned-CNT composite paper and that catechin with its six-membered rings and hydrophilic groups was suitable. Observation by scanning electron microscopy of samples prepared using catechin showed that the CNTs were aligned in the direction of the AC field on the paper fibers. Measurement of the electric conductivity showed that the surface resistance was different between the direction of the aligned CNTs (high conductivity) and that of verticality (low). The conductivity of the aligned-CNT-composite paper samples was higher than that of nonaligned samples. This unique and functional paper, which has high and anisotropic conductivity, is applicable to a conductive material to control the direction of current. |
| format | Article |
| id | doaj-art-4c357eefd8de4155acb0600aa4cdc111 |
| institution | Kabale University |
| issn | 1687-9503 1687-9511 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Nanotechnology |
| spelling | doaj-art-4c357eefd8de4155acb0600aa4cdc1112025-02-03T01:29:10ZengWileyJournal of Nanotechnology1687-95031687-95112012-01-01201210.1155/2012/819281819281Fabrication of Aligned-Carbon-Nanotube-Composite Paper with High and Anisotropic ConductivityYuki Fujitsuka0Takahide Oya1Graduate School of Engineering, Yokohama National University, Tokiwadai 79-5, Hodogaya-ku, Yokohama 240-8501, JapanGraduate School of Engineering, Yokohama National University, Tokiwadai 79-5, Hodogaya-ku, Yokohama 240-8501, JapanA functional carbon-nanotube (CNT)-composite paper is described in which the CNTs are aligned. This “aligned-CNT composite paper” is a flexible composite material that has CNT functionality (e.g., electrical conductivity) despite being a paper. An advanced fabrication method was developed to overcome the problem of previous CNT-composite papers, that is, reduced conductivity due to random CNT alignment. Aligning the CNTs by using an alternating current (AC) field was hypothesized to increase the electrical conductivity and give the paper an anisotropic characteristic. Experimental results showed that a nonionic surfactant was not suitable as a CNT dispersant for fabricating aligned-CNT composite paper and that catechin with its six-membered rings and hydrophilic groups was suitable. Observation by scanning electron microscopy of samples prepared using catechin showed that the CNTs were aligned in the direction of the AC field on the paper fibers. Measurement of the electric conductivity showed that the surface resistance was different between the direction of the aligned CNTs (high conductivity) and that of verticality (low). The conductivity of the aligned-CNT-composite paper samples was higher than that of nonaligned samples. This unique and functional paper, which has high and anisotropic conductivity, is applicable to a conductive material to control the direction of current.http://dx.doi.org/10.1155/2012/819281 |
| spellingShingle | Yuki Fujitsuka Takahide Oya Fabrication of Aligned-Carbon-Nanotube-Composite Paper with High and Anisotropic Conductivity Journal of Nanotechnology |
| title | Fabrication of Aligned-Carbon-Nanotube-Composite Paper with High and Anisotropic Conductivity |
| title_full | Fabrication of Aligned-Carbon-Nanotube-Composite Paper with High and Anisotropic Conductivity |
| title_fullStr | Fabrication of Aligned-Carbon-Nanotube-Composite Paper with High and Anisotropic Conductivity |
| title_full_unstemmed | Fabrication of Aligned-Carbon-Nanotube-Composite Paper with High and Anisotropic Conductivity |
| title_short | Fabrication of Aligned-Carbon-Nanotube-Composite Paper with High and Anisotropic Conductivity |
| title_sort | fabrication of aligned carbon nanotube composite paper with high and anisotropic conductivity |
| url | http://dx.doi.org/10.1155/2012/819281 |
| work_keys_str_mv | AT yukifujitsuka fabricationofalignedcarbonnanotubecompositepaperwithhighandanisotropicconductivity AT takahideoya fabricationofalignedcarbonnanotubecompositepaperwithhighandanisotropicconductivity |