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Facile route of flexible wire grid polarizer fabrication by angled-evaporations of aluminum on two sidewalls of an imprinted nanograting

机译:通过在压印纳米光栅的两个侧壁上进行铝的有角度蒸发来制造柔性线栅偏振器的便捷途径

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摘要

In this study, we report a new method to fabricate a wire grid polarizer (WGP) that greatly relaxes the requirement on patterning and etching, and can be easily applied to produce flexible WGPs. The technique is to pattern a high aspect ratio and narrow linewidth grating by nanoimprint lithography followed by two angled aluminum depositions in opposite directions to produce the narrow spacing between the aluminum lines required for a visible band WGP. Anisotropic reactive ion etching is used to remove the aluminum deposited at the top of the grating but leave the aluminum layer on the grating sidewalls, thereby forming a metal wire grid with much smaller spacings than a lithographically defined grating. As a result, the fabricated WGP showed good performance in a wide range of visible wavelength.
机译:在这项研究中,我们报告了一种制造线栅偏振器(WGP)的新方法,该方法极大地放宽了对图案和蚀刻的要求,并且可以轻松地用于生产柔性WGP。该技术是通过纳米压印光刻技术在高纵横比和窄线宽光栅上进行图案化,然后在相反的方向进行两次成角度的铝沉积,以在可见光带WGP所需的铝线之间产生狭窄的间距。各向异性反应离子刻蚀用于去除沉积在光栅顶部的铝,但将铝层留在光栅侧壁上,从而形成间距比光刻定义的光栅小得多的金属线栅。结果,制造的WGP在宽的可见波长范围内显示出良好的性能。

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