The role of vortices in the process of impurity nanoparticles coalescence in liquid helium
The role of vortices in the process of impurity nanoparticles coalescence in liquid helium
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DOI：
10.1016/j.cplett.2011.11.020
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发表时间：
2012-01-05
影响因子：
2.8
通讯作者：
Khodos, I. I.
中科院分区：
文献类型：
--
作者：
Gordon, E. B.;Karabulin, A. V.;Khodos, I. I.
超流氦中金属原子的凝聚过程被证明主要发生在量子化涡旋中。首先，在那里生长球形纳米晶体。当液体中的金属含量较低时，它们就会融合成长的圆柱形纳米线。当金属含量较高时，形成球形微粒，而其尺寸因涡核中产生的相互排斥而终止。人们发现，在普通液氦的常见涡流中也形成了少量的锯齿形纳米线。预计非金属材料在超流氦中的凝聚会产生理想的一维结构，例如长聚合物链。 (C) 2011 Elsevier B.V. 保留所有权利。
The process of condensation of metal atoms in superfluid helium was shown to occur mainly in the quantized vortices. Firstly the spherical nanocrystals were grown there. At low metal content in liquid they fused then into long cylindrical nanowires. At higher metal content the spherical microparticles were formed instead with their size terminated by mutual repulsion arisen in vortex core. Small number of zigzag-shaped nanowires was found to be formed in usual vortices of normal liquid helium as well. The production of ideal 1-D structures such as long polymer chains was predicted for non-metallic material condensation in superfluid helium. (C) 2011 Elsevier B.V. All rights reserved.