Investigation of electrical properties of nano-carbon networks and their applications to electronics
| Project/Area Number |
24656195
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Electronic materials/Electric materials
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| Research Institution | Hokkaido University |
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Principal Investigator |
SANO EIICHI 北海道大学, 量子集積エレクトロニクス研究センター, 教授 (10333650)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Keywords | ナノカーボン / カーボンナノチューブ / 電子伝導 / 複素誘電率 / 薄膜トランジスタ / 複合材料 / 電磁波吸収体 / モデル |
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| Outline of Final Research Achievements |
Carbon nanotubes (CNTs) have been attracting much attention due to wide application areas thanks to their excellent electric, mechanical, and thermal properties.
We presented a simple model for the drain current of CNT network thin-film transistors (TFTs) operated in the linear region. The model was based on the gate electrostatics and the continuity condition of the currents through CNT and CNT-CNT tunnel junction. The model was evaluated by comparing its calculations to experimentally measured drain current and low frequency (1/f) noise parameters. It provides useful information to improve the TFT performance. We calculated the complex permittivity of materials required to achieve a single-layer electromagnetic absorber with a high absorption coefficient in the 60-GHz band. On the basis of the findings, we developed three types of nonwoven fabrics with high porosity in which the fibers were coated with multiwalled carbon nanotubes.
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Report
(4 results)
Research Products
(22 results)
