| Project/Area Number |
25390106
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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 |
Optical engineering, Photon science
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| Research Institution | National Institute of Advanced Industrial Science and Technology |
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Principal Investigator |
Shima Takayuki 国立研究開発法人産業技術総合研究所, 電子光技術研究部門, 主任研究員 (10371048)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2013: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 光記録 / 酸化物 / 情報アーカイブ / 大容量光記録 / 超解像再生 / 多値記録 / 多層記録 / アーカイブ |
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| Outline of Final Research Achievements |
We have studied on a combination of multi-layer recording and super-resolution readout of an optical disk. In-Sb-O was selected for the purpose since InSb is a well-known material for the super-resolution readout. By making an oxide of In-Sb, it was possible to make the film nearly transparent, and the multi-layer stacking became possible. When In-Sb-O film is sandwiched by ZnS-SiO2 films, the total film thickness increased when heated, and it is thus possible to do the optical recording. After annealing at 900 °C, the In-Sb-O film showed a reversible optical-property change between the temperatures of room temperature and 600 °C. This change is probably related to the bandgap shift of the material, and it may be the origin of super-resolution readout.
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