Budget Amount *help |
¥16,250,000 (Direct Cost: ¥12,500,000、Indirect Cost: ¥3,750,000)
Fiscal Year 2016: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2015: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2014: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
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Outline of Final Research Achievements |
We investigate the mechanism in crystalline submicrometer spherical particle formation by pulsed laser melting in liquid, in which pulsed laser is irradiated onto raw nanoparticles dispersed in liquid. From the experimental results regarding the pulse width dependence on the laser fluence threshold for spherical particle formation, we conclude that vapor phase layer formed by the rapid temperature increase due to laser light absorption acts as a barrier for thermal conductance, and that this further induces more rapid temperature increase to form molten droplets above the melting point and subsequent quenching to form spherical particles.
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