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首页> 外文期刊>Nanotechnology >Nanocolumnar association and domain formation in porous thin films grown by evaporation at oblique angles
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Nanocolumnar association and domain formation in porous thin films grown by evaporation at oblique angles

机译：通过倾斜角蒸发生长的多孔薄膜中的纳米柱缔合和畴形成

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摘要

Porous thin films grown at oblique angles by evaporation techniques are formed by tilted nanocolumnar structures which, depending on the material type and growth conditions, associate along certain preferential directions, giving rise to large domains. This arrangement, commonly denoted as bundling association, is investigated in the present work by performing fundamental experiments and growth simulations. It is proved that trapping processes of vapor species at the film surface, together with the shadowing mechanism, mediate the anisotropic widening of the nanocolumns and promote their preferential coalescence along certain directions, giving rise to domains with different shape and size. The role of these two processes is thoroughly studied in connection with the formation of these domains in materials as different as SiO2 and TiO2.
机译：通过倾斜的纳米柱状结构形成通过蒸发技术以倾斜角度生长的多孔薄膜，该倾斜的纳米柱状结构根据材料类型和生长条件沿某些优先方向缔合，从而产生大的区域。在本工作中，通过执行基础实验和生长模拟来研究通常称为捆绑关联的这种安排。事实证明，膜表面的气相物种捕获过程以及遮蔽机制，介导了纳米柱的各向异性扩宽，并促进了它们在一定方向上的优先聚结，从而形成了具有不同形状和尺寸的畴。在与SiO2和TiO2不同的材料中形成这些畴的过程中，对这两个过程的作用进行了深入研究。

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