镓
过冷
纳米颗粒
材料科学
冰点
液态金属
粒径
吸收(声学)
化学工程
纳米技术
化学物理
分析化学(期刊)
化学
冶金
色谱法
热力学
复合材料
物理化学
物理
工程类
作者
Lingfei Cao,Hyunseo Park,Gjergj Dodbiba,Kenji Ono,Chiharu Tokoro,Toyohisa Fujita
摘要
Gallium metal under the freezing point was observed to maintain its liquid state by dispersing silica nanoparticles of a given particle size and concentration. Though the freezing point of pure gallium is 302.9 K, the liquid gallium maintained its supercooling state at 276-277 K for more than 400 days by dispersing 1.0 wt. % of silica nanoparticles (10 nm in size). Extended x-ray absorption fine structure analysis shows that the supercooled gallium liquid has a β-Ga-like feature, and the nearest neighboring atom distance is 0.1 Å larger than that of pure liquid gallium. This method opens the way to use liquid gallium as a promising fluid carrier in energy conversion devices.
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