| Project/Area Number |
18K04819
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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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| Review Section |
Basic Section 27010:Transport phenomena and unit operations-related
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| Research Institution | Iwate University (2022-2024)
Wakayama National College of Technology (2018-2021) |
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Principal Investigator |
HAYASAKA Ryo 岩手大学, 教育学部, 准教授 (20593057)
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| Project Period (FY) |
2018-04-01 – 2025-03-31
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| Project Status |
Completed (Fiscal Year 2024)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2021: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2020: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2019: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2018: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Keywords | シミュレーション / 数理情報学 / 磁性ナノ粒子 / 自己組織化 / 外部磁場 / ナノ粒子構造 / ビッグデータ / データサイエンス / 粒子シミュレーション / 薄膜形成 / 移動現象および単位操作関連 / 磁気記録材料 / 記録容量 / AI化 / 薄膜 |
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| Outline of Final Research Achievements |
The formation of thin films composed of magnetic nanoparticles and the control of their ordered structures are essential technologies in electronic materials, particularly for achieving higher data storage capacities. However, conventional fabrication methods struggle to control nanoparticle arrangements at the nanoscale. This study investigates the Magnetic Solution Deposition Technique, which enables thin film formation by sedimenting nanoparticles in solution under controlled magnetic fields and temperatures. Particle-based simulations revealed that stronger magnetic fields increase the range of film-forming conditions, though this effect saturates beyond a certain point. Higher solution temperatures also promote film formation. The maximum achievable area fraction was found to be 0.322, and this value decreases exponentially with increasing standard deviation in particle size distribution.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究は，磁気溶液堆積法と粒子シミュレーションを用いて，磁性ナノ粒子の自己組織化による薄膜形成条件および秩序構造制御の物理的メカニズムを明らかにしたものである．特に，磁場強度や液体温度が薄膜形成に与える影響，最大面積分率の限界値，粒子径分布のばらつきが構造秩序性に及ぼす影響を定量的に示した点に学術的意義がある．その中でも最大面積分率点が0.322であることを発見したのは科学的にも工学的にも極めて重要な成果であり，ナノ構造物理における自己組織化現象の理解が進むとともに，磁性ナノ粒子を用いた高密度記録媒体や次世代電子デバイスの材料設計に向けた基盤的知見を提供する．
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