The effect of different thickness alumina capping layers on the final morphology of dewet thin Ni films
The effect of different thickness alumina capping layers on the final morphology of dewet thin Ni films
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DOI：
10.1007/s00339-018-1644-z
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发表时间：
2018-02
期刊：
影响因子：
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通讯作者：
Benjamin C. White;A. Behbahanian;T. M. Stoker;J. Fowlkes;C. Hartnett;P. Rack;N. A. Roberts
中科院分区：
文献类型：
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作者：
Benjamin C. White;A. Behbahanian;T. M. Stoker;J. Fowlkes;C. Hartnett;P. Rack;N. A. Roberts
衬底上的纳米颗粒在纳米技术中有许多应用，从提高太阳能电池效率到改善碳纳米管生长。期望以成本有效的方式生产纳米颗粒并控制尺寸和间距，但难以做到。这项工作提出了一种可扩展的方法来改变镍纳米颗粒的半径和间距分布。在脉冲激光诱导的去湿过程中，将氧化铝覆盖层引入到薄镍膜中，已经产生了去湿纳米颗粒的半径和间距的平均值和标准偏差的降低，并且随着覆盖层厚度的增加，最终形态没有明显的差异。这里还呈现了在未封端的样品和封端的样品之一上生长的碳纳米管垫的差异，对于封端的情况存在更致密的垫。
Nanoparticles on a substrate have numerous applications in nanotechnology, from enhancements to solar cell efficiency to improvements in carbon nanotube growth. Producing nanoparticles in a cost effective fashion with control over size and spacing is desired, but difficult to do. This work presents a scalable method for altering the radius and pitch distributions of nickel nanoparticles. The introduction of alumina capping layers to thin nickel films during a pulsed laser-induced dewetting process has yielded reductions in the mean and standard deviation of radii and pitch for dewet nanoparticles with no noticeable difference in final morphology with increased capping layer thickness. The differences in carbon nanotube mats grown, on the uncapped sample and one of the capped samples, is also presented here, with a more dense mat being present for the capped case.