2013 Fiscal Year Final Research Report
Formation of three-dimensional ultra high-intensity optical field and novel materials
| Project/Area Number |
23686102
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Material processing/treatments
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Project Period (FY) |
2011-04-01 – 2013-03-31
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| Keywords | 非平衡プロセス / レーザープロセス / フェムト秒パルスレーザー / 合金ナノ粒子 / 水溶液 |
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| Research Abstract |
In the present study, formation of novel materials with unexpected properties in a three-dimensional ultra-high intensity optical field which can be achieved only by high intensity femtosecond laser beam with highly-controlled phase and polarization was investigated.
All-proportional solid-solution alloy nanoparticles, which is difficult to obtain by conventional method due to the miscibility gap in binary phase diagram and/or the different standard electrode potential, can be easily fabricated by high-intensity laser irradiation of solution of ions through non-linear process. And the obtained alloy nanoparticles exhibited extremely high catalytic stability during CO oxidation process. Intensity distribution of the high-energetic electric field around focal point was maintained by tightly focused phase controlled femtosecond laser pulses.
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