2019 Fiscal Year Final Research Report
Generation of Reactive Core-Shell Cluster Ion Beam and Its Application to Organic-Inorganic Composite Materials Analysis
| Project/Area Number |
16K05821
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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 |
Analytical chemistry
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| Research Institution | University of Hyogo |
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Principal Investigator |
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| Project Period (FY) |
2016-04-01 – 2020-03-31
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| Keywords | SIMS / 分子クラスター / 脱離イオン化 / スパッタリング / 質量分析 |
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| Outline of Final Research Achievements |
We compared the sputtering rates of organic molecular layers by cluster ion beams of Ar, water, and methanol. Sputtering rates of two types of molecules, which have very different solubilities in methanol, were measured. Molecule A, which has a high solubility in methanol, was found to increase the sputtering rate by methanol clusters significantly when the acceleration energy was low. However, as the acceleration energy increased, there was no significant difference in the sputter rate between cluster species. This result suggests that a process similar to dissolution plays an important role in the low-energy region in the organic molecular sputtering process using molecular clusters.
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| Free Research Field |
表面科学
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| Academic Significance and Societal Importance of the Research Achievements |
近年, Ar巨大クラスターのイオンビームがスパッタビームとして実用化され, 有機材料の低損傷スパッタリングが可能になっている.しかしArクラスターイオンビームは有機材料を低損傷スパッタできる反面,無機材料のスパッタ速度が有機材料に比べて著しく遅く, そのため有機無機複合材料や,無機材料中の有機分子などを分析することが困難である. 本研究は分子クラスターイオン照射による有機分子の脱離イオン過程および材料スパッタリングのメカニズムを明らかにすることで、上記の問題点を克服した新しい分析手法を開発するための基礎的知見となる.
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