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
中科院分区:
文献类型:
--
作者:
Han A;Kuan A;Golovchenko J;Branton D
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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