In-situ observation of dewetting phenomena by multi-quantum beam irradiation and investigation of their mechanism
| Project/Area Number |
26420661
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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 properties of metals/Metal-base materials
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| Research Institution | Hokkaido University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
岸本 弘立 室蘭工業大学, 工学研究科, 教授 (30397533)
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| Co-Investigator(Renkei-kenkyūsha) |
YATSU Shigeo 北海道大学, 大学院工学研究院, 特任助教 (40111158)
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| Research Collaborator |
LEI Yanhua
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | ナノ粒子 / 表面プラズモン共鳴 / ナノ構造 / ナノ材料 / 微細構造解析 / その場観察 / 超高圧電子顕微鏡 / 濡れ性非濡れ性遷移 / 局在表面プラズモン共鳴 / 量子ビーム / レーザー / 照射効果 / LIPSS / 複合量子ビーム / 同時照射 |
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| Outline of Final Research Achievements |
In this study, to investigate the mechanism of quantum beam irradiation induced dewetting phenomenon by image analysis using Quantum Beam High Voltage Electron Microscope in Hokkaido University, in-situ observation under co-irradiation with 100keV Ar ions and nanosecond-pulsed laser with 532 nm, or each quantum beam irradiation were done.
As a result of experiments, we succeeded to observe the behavior of Rayleigh instability during quantum beam irradiation induced dewetting of the noble metal changing from a rectangular shape to a spherical shape. As decreasing the thickness of the noble metal thin film, the average particle diameter of the nanoparticles is getting smaller than that of thicker one after dewetting. A blue shift of the absorption spectrum in the visible light region was confirmed due to the quantum effects.
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Report
(4 results)
Research Products
(22 results)
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[Journal Article] Synthesis of surfactant-free Cu-Pt dendritic heterostructures with highly electrocatalytic performance for methanol oxidation reaction2016
Author(s)
Kang, S., Gao, G., Xie, X., Shibayama, T., Lei, Y., Wang, Y. and Cai, L.
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Journal Title
Materials Research Letters
Volume: 4
Issue: 4
Pages: 212-218
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
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