2013 Fiscal Year Final Research Report
Enhancement mechanism by synergetic effects between an interface and a magnetic field which controls 3-D orientation of nanotubes
| Project/Area Number |
23550012
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Physical chemistry
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| Research Institution | Shinshu University |
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Principal Investigator |
KATSUKI Akio 信州大学, 全学教育機構, 准教授 (70283223)
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| Co-Investigator(Renkei-kenkyūsha) |
FUJIWARA Yoshihisa 広島大学, 理学研究科, 准教授 (00209131)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 磁気配向 / 微小重力 / ナノチューブ |
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| Research Abstract |
The control of orientation of carbon nanotubes, using a magnetic field is an important technique. Magnetically simulated microgravity can achieve non-vessel conditions and magnetic orientation. We prepared polyvinyl alcohol (PVA) films with multiwall carbon nanotubes (MWCNTs), and we investigated the MWCNT orientation in the simulated microgravity condition. The XRD pattern results and AFM observations showed that the nanotubes were oriented parallel to the surface of the film at the zero field. In contrast, they were oriented perpendicularly in the magnetic field. Moreover, we developed a control technique of the angle between the nanotube and the magnetic field.
Flexible fibers like DNA are many useful functions, but their magnetic orientation was difficult because of the flexibility itself. Through many trial experiments, we prepared a DNA film without a plate, and the results of birefringence spectra showed the DNA chains were perpendicular to the magnetic field.
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[Remarks] 勝木 明夫, 濱崎 亜富, 第 64 回コロイドおよび界面化学討論会シンポジウム「外場と粒子の相互作用は, コロイド・界面科学でどこまで理解できるのか?」主催者, 2013 年 9月 20 日, 名古屋工業大学
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[Remarks] 勝木 明夫, CST 事業(最新の科学情報を学ぶ特別授業)「強磁場の科学」講師, 2013年 3 月 9 日, 信州大学教育学部
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[Remarks] 勝木 明夫, 土曜市民教養教室講師, 「光と色の世界にふれよう」, 2013 年 4 月~7 月, 信州大学全学教育機構
