2011 Fiscal Year Final Research Report
Photon localization in metal oxides with controlled morphology anddevelopment of optical functional materials using light interference
| Project/Area Number |
22750188
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Inorganic industrial materials
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| Research Institution | Kyoto University |
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Principal Investigator |
FUJITA Koji 京都大学, 大学院・工学研究科, 准教授 (50314240)
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| Project Period (FY) |
2010 – 2011
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| Keywords | 金属酸化物 / 多孔体 / ナノ粒子 / 波動干渉 / 光機能 |
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| Research Abstract |
Porous oxide materials with controlled morphology have been fabricated using the sol-gel method accompanied by phase separation in order to examine the transport properties of photon. When high-refractive-index TiO_2 porous materials are combined with solution containing organic dye, random laser oscillation is observed as a result of the photon localization. The research on Ce^<3+>: YAG porous materials revealed that some surface defects induce the photoreaction of Ce^<3>+, which results in a novel optical function exemplified by a scattering-based hole burning effect. As the related phenomenon, it is also found that the combination of metal-dielectric core-shell nanoparticles and organic dye solution serves as the random lasing media with low threshold.
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