2022 Fiscal Year Final Research Report
Effect of light irradiation on RT plastic deformation of inorganic single crystals
| Project/Area Number |
21K20484
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Multi-year Fund |
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| Review Section |
0401:Materials engineering, chemical engineering, and related fields
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| Research Institution | Nagoya University |
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Principal Investigator |
OGURA Yu 名古屋大学, 工学研究科, 助教 (70908152)
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| Project Period (FY) |
2021-08-30 – 2023-03-31
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| Keywords | 転位 |
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| Outline of Final Research Achievements |
Dislocations in inorganic single crystals have characteristic atomic and electronic structures at their cores, and consequently can interact with photo-excited carriers. Due to the interaction, the plastic deformation behavior can be affected by light irradiation. In this study, magnesium oxide (MgO) single crystals were deformed at room temperature under controlled light conditions. Then, it was revealed that MgO crystals exhibit positive photoplastic effect, increase in flow stress by light irradiation.
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| Free Research Field |
材料工学
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| Academic Significance and Societal Importance of the Research Achievements |
光塑性効果に関する研究は，これまで主にII-VI族化合物半導体を対象に行われてきた．本研究は，光塑性効果がII-VI族化合物半導体以外の材料においても生じる可能性を示唆している．本研究を足掛かりとして，より広範な材料に適用可能な基礎学理が構築されることによって，光を利用した新奇材料加工・材料製造技術の創成が期待できる．
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