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Nanometer-scale lithography using a standing wave atom optical lens.

机译:使用驻波原子光学透镜的纳米级光刻。

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The recent trends in the semiconductor industry are toward circuits with ever increasing numbers of elements, and higher device density on the semiconductor chips. One way these higher densities are being achieved is by reduction of the lithographic dimensions of the individual devices in the ciruuit. A challenge for lithographic processes is to provide the resolution necessary to produce the smaller structures, without a reduction in throughput, and many research groups are pursuing ways of achieving this.; In this work, we will present a fundamentally new method of lithography. This technique uses the techniques developed in the fields of laser cooling and trapping of atoms, to create patterns on a surface by modifying the spatial distribution of atoms in an atomic beam during the deposition of a thin film. Numerical simulations of this technique show that it should be capable of producing structures smaller than 10nm, and because of its parallel nature continue to have high throughput.; In particular, we have used a Gaussian standing wave at {dollar}lambda{dollar} = 589nm as an atom optical lens to focus a thermal atomic sodium beam. We have examined both numerically and experimentally how the parameters of the atomic source and the Gaussian standing wave lens affect the resolution of our deposited structures. By optimizing the choice of parameters, and using a short focal length atom optical lens, we have produced structures with linewidths of {dollar}rm{lcub}sim{rcub}13nm{dollar} and contrasts of 6:1.
机译:半导体工业中的最新趋势是朝着元件数量不断增加以及半导体芯片上的器件密度更高的电路发展。实现这些更高密度的一种方法是减小雪茄中各个器件的光刻尺寸。光刻工艺面临的挑战是在不降低产量的情况下提供生产较小结构所需的分辨率,许多研究小组正在寻求实现这一目标的方法。在这项工作中,我们将介绍一种全新的光刻方法。该技术使用在激光冷却和捕获原子领域中开发的技术,通过在薄膜沉积过程中修改原子束中原子的空间分布,在表面上创建图案。该技术的数值模拟表明,该技术应能够生产小于10nm的结构,并且由于其平行性而继续具有高产量。尤其是,我们使用{dollar} lambda {dollar} = 589nm的高斯驻波作为原子光学透镜聚焦热原子钠束。我们已经在数值和实验上检查了原子源和高斯驻波透镜的参数如何影响沉积结构的分辨率。通过优化参数的选择,并使用短焦距原子光学透镜,我们生产出线宽为{rmal} rm {lcub} sim {rcub} 13nm {dollar}且对比度为6:1的结构。

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