Vapor-liquid-solid mechanisms: Challenges for nanosized quantum cluster/dot/wire materials
Vapor-liquid-solid mechanisms: Challenges for nanosized quantum cluster/dot/wire materials
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DOI：
10.1063/1.2236163
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发表时间：
2006-08
影响因子：
3.2
通讯作者：
P. Cheyssac;M. Sacilotti;G. Patriarche
中科院分区：
文献类型：
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作者：
P. Cheyssac;M. Sacilotti;G. Patriarche
纳米尺度材料的生长机制模型是一个关键的步骤，必须细化，以更好地理解纳米结构的点/线制造。为此，本文将讨论其生长机制，并研究金属纳米团簇起始点尺寸的影响，下文称为“尺寸效应”。在许多所谓的尺寸效应中，金属纳米团簇的熔点的巨大降低改变了由柱顶部的金属点组成的生长结构内部的物理性质以及物理/机械相互作用。热力学尺寸效应与原子链的弯曲或曲率有关，导致它们之间的键变弱;这种尺寸或曲率效应被描述并接近晶体纳米点/线生长。我们将把这种效应描述为一个“烹饪机”，当原子数从大块材料的1023at.scincm ~ 3减少到1-2nm的几十个原子时。
The growth mechanism model of a nanoscaled material is a critical step that has to be refined for a better understanding of a nanostructure’s dot/wire fabrication. To do so, the growth mechanism will be discussed in this paper and the influence of the size of the metallic nanocluster starting point, referred to later as “size effect,” will be studied. Among many of the so-called size effects, a tremendous decrease of the melting point of the metallic nanocluster changes the physical properties as well as the physical/mechanical interactions inside the growing structure composed of a metallic dot on top of a column. The thermodynamic size effect is related to the bending or curvature of chains of atoms, giving rise to the weakening of bonds between them; this size or curvature effect is described and approached to crystal nanodot/wire growth. We will describe this effect as that of a “cooking machine” when the number of atoms decreases from ∼1023at.∕cm3 for a bulk material to a few tens of them in a 1–2nm ...