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Controlled fabrication of gold nanotip arrays by nanomolding-necking technology

机译：纳米型接口技术控制金纳米阵列的制造

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摘要

The fabrication of nanotips has been driven by the increasing industrial demands in developing high-performance multifunctional nanodevices. In this work, we proposed a controlled, rapid as well as low cost nanomolding-necking technology to fabricate gold nanotips arrays. The geometries of gold nanotips having cone angle range of similar to 28-77 degrees and curvature radii of <5 nm can be prepared by tailoring the diameters of raw nanorods in nanomolding process or modulating the necking temperature. Molecular dynamics simulation reveals that the formation of the nanotip geometry is determined by the interplay between dislocation-based and diffusion-based deformation mechanisms, intrinsically arising from the nonlinear dependence of atom diffusion on temperature and sample size. The good controllability, mass production and low cost of the developed nanomolding-necking technology make it highly promising in developing nanodevices for a wide range of applications, such as probing, sensing, antireflection coating and nanoindentation.
机译：在开发高性能多功能纳米型中的工业需求的增加，纳米填充的制造已经推动。在这项工作中，我们提出了一种受控，快速的和低成本的纳米型颈缩技术，用于制造金纳米阵列。通过剪裁纳米燃烧过程中的原始纳米棒的直径或调节缩颈温度，可以制备具有类似于28-77度和<5nm的曲率半径的金纳米的几何形状。分子动力学模拟显示，纳米坡几何形状的形成由位错和基于扩散的变形机制之间的相互作用确定，从原子扩散对温度和样品尺寸的非线性依赖性的本质上产生。开发的纳米型颈缩技术的良好可控性，批量生产和低成本使其在开发广泛应用中的开发纳米型方面具有高度承诺，例如探测，传感，抗反射涂层和纳米凸缘。

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