Nanopatterning on nonplanar and fragile substrates with ice resists.

Nanopatterning on nonplanar and fragile substrates with ice resists.
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DOI:
10.1021/nl204198w
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发表时间:
2012-02-08
期刊:
影响因子:
10.8
通讯作者:
Branton D
Branton D
中科院分区:
材料科学1区
文献类型:
--
作者:
Han A;Kuan A;Golovchenko J;Branton D

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使用聚合物抗蚀剂的电子束光刻技术是一项重要的技术,它提供了纳米器件制造所需的空间分辨率。但是,通常需要对聚合物抗蚀剂不能可靠应用的非平面结构进行图像化。此外,脆弱的基材,如独立的纳米管或薄膜,不能忍受强力的机械擦洗程序,以去除所有残留的聚合物抗蚀剂痕迹。在这里,我们展示了几个例子,其中电子束光刻使用非晶冰阻消除了这两个困难,并使独特的纳米级器件结构的制造过程中,我们称之为冰光刻。我们展示了在原子力显微镜探针、微悬臂、透射电子显微镜网格和悬浮单壁碳纳米管尖端的微纳米结构的制造。我们的研究结果表明,通过使用非晶水冰作为电子束抗蚀剂,可以在非平面或脆弱的衬底上制造新一代纳米器件结构。
Electron beam (e-beam) lithography using polymer resists is an important technology that provides the spatial resolution needed for nanodevice fabrication. But it is often desirable to pattern non-planar structures on which polymeric resists cannot be reliably applied. Furthermore, fragile substrates such as free-standing nanotubes or thin films cannot tolerate the vigorous mechanical scrubbing procedures required to remove all residual traces of the polymer resist. Here we demonstrate several examples where e-beam lithography using an amorphous ice resist eliminates both of these difficulties and enables the fabrication of unique nanoscale device structures in a process we call ice lithography. We demonstrate the fabrication of micro and nanostructures on the tip of atomic force microscope probes, micro cantilevers, transmission electron microscopy grids, and suspended single-walled carbon nanotubes. Our results show that by using amorphous water ice as an e-beam resist, a new generation of nanodevice structures can be fabricated on non-planar or fragile substrates.
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