2016 Fiscal Year Final Research Report
Space selective formation of porous structures inside glass by laser induced elemental migration
| Project/Area Number |
26410240
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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 |
Inorganic industrial materials
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | ガラス / 超短パルスレーザー / 空間光変調器 / 微細加工 / レーザープロセッシング |
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| Outline of Final Research Achievements |
We elucidated that the transient temperature distribution, the shape of the molten region as well as the elemental distributions inside glasses can be controlled by parallel irradiation with focused ultrashort laser pulses at different repetition rates. We found that the result of the elemental distribution changes by laser irradiation can induce phase separation and precipitation of nanocrystals in the molten region inside glasses and that microstructures such as porous structures are formed by the phase separation and nanocrystal precipitation. In addition, the parallel laser irradiation system developed in this study and the simulation of heat accumulation enabled estimation of the flow of glass melt during laser irradiation and laser melting with suppression of residual strain in the heated region.
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| Free Research Field |
物理化学
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