| Project/Area Number |
15087203
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| Research Category |
Grant-in-Aid for Scientific Research on Priority Areas
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| Allocation Type | Single-year Grants |
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| Review Section |
Science and Engineering
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| Research Institution | Osaka University |
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Principal Investigator |
TANAKA Hidekazu Osaka University, The Institute of Scientific and Industrial Research, Associate Professor, 産業科学研究所, 助教授 (80294130)
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| Co-Investigator(Kenkyū-buntansha) |
MATSUMOTO Takuya Osaka University, The Institute of Scientific and Industrial Research, Associate Professor, 産業科学研究所, 助教授 (50229556)
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| Project Period (FY) |
2003 – 2006
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| Project Status |
Completed (Fiscal Year 2006)
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| Budget Amount *help |
¥30,800,000 (Direct Cost: ¥30,800,000)
Fiscal Year 2006: ¥7,700,000 (Direct Cost: ¥7,700,000)
Fiscal Year 2005: ¥7,700,000 (Direct Cost: ¥7,700,000)
Fiscal Year 2004: ¥7,700,000 (Direct Cost: ¥7,700,000)
Fiscal Year 2003: ¥7,700,000 (Direct Cost: ¥7,700,000)
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| Keywords | DNA / Ferromagnetic oxide / oxide nano-gap electrode / Atomic Force Microscope / perfect spin polarization / organic semiconductor / Laser Ablation / nano-particle / ナノ粒子複合 / ネットワーク / ナノギャップ電極 / 原子間力顕微鏡 / ナノリソグラフィー / 機能性酸化物 / AFMリソグラフィー / 原子ステップ / スピン偏極 / 遷移金属酸化物薄膜 / ナノ材料 / 自己組織化 / スピン / 磁性 / ナノ電極 / 遷移金属酸化物 |
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| Research Abstract |
DNA is the most important material in life science, and can also be regarded as a naturally occurring and highly specific functional biopolymer. DNA shows promise as a provider of a structural basis for the "bottom-up" fabrication of inorganic and bio-organic molecular devices.
DNA and nano-particle complex networks were constructed by self assembly technique, such as Au nano-particle/DNA, ferromagnetic Co nano particle on mica substrate, and straight one dimensional lines of nano-particle/DNA network along mono-layer step on Al_2O_3(0001) single crystal substrate surface.
Point Contact Imaging (PCI)-AFM technique was, developed to reveal nano scale conductivity of DNA network, and dependence of DNA conductivity on humidity was reported suggesting ionic conduction.
Atomic Force Microscope nano-lithography we have developed, was used to construct robust nano-structures of complex oxides down to 30 nm in size, which exhibit High Curie temperature, perfect spin polarization, and high stability for biological molecules.
We have realized (La,Ba)MnO_3 and new ferromagnetic oxide (Fe,Mn)_3O_4 nano-gap electrode structures and successful formation of DNA and Au nano-particle self assembled nano structure within them.
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