2022 Fiscal Year Final Research Report
High-precision measurement of microscopic dynamic wetting in nanomaterial coating processes and development of the estimation model
| Project/Area Number |
20H02498
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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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 | Tohoku University |
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Principal Investigator |
Shoji Eita 東北大学, 工学研究科, 准教授 (20780430)
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| Project Period (FY) |
2020-04-01 – 2023-03-31
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| Keywords | 動的濡れ / ナノ材料 / ナノ液膜 / 先行薄膜 / エリプソメータ |
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| Outline of Final Research Achievements |
In this study, a measurement of the nanometer-scale thickness profiles of a liquid film that forms in the vicinity of the solid-liquid-gas interface was succeeded when nanoparticles are dispersed in polydimethylsiloxane or n-alkane and deposited onto a substrate. The effects of different dispersant species, dispersant evaporation, and nanoparticle concentration were systematically investigated. Additionally, the correlation between the hyperextended wetting behavior unique to nanomaterials and the development of the nanofilm was elucidated.
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| Free Research Field |
化学工学，熱工学
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| Academic Significance and Societal Importance of the Research Achievements |
ナノ粒子が高濃度に分散したナノフルイドや高分子ナノコンポジット材料などの革新的機能を有するナノ材料は，導電性ナノインク，太陽電池，センサーなど多岐に渡る応用が期待される。これら応用に向けたナノ材料の塗布・薄膜化プロセス，例えば，ナノ材料のインクジェットプロセス等においてナノ材料液滴の濡れ現象の制御は不可欠であり，その現象理解はプロセスの高度化につながる。基板上ナノ材料液滴の三相界面近傍に発達するナノメートルスケール厚さの液膜形状の観測はこれまで研究例がほぼなく，これを可能とした点および本観測を軸とし各種相関を整理した点に本研究の学術的意義がある。
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