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Nano-scale reactive-ion dry-etching with electron-beam-baked resist

机译:纳米级反应离子干蚀刻用电子束烘焙抗蚀剂

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We developed a nano-scale electron-beam (EB) lithography procedure using a high-resistance electron-beam resist for fabrication of nano-biodevices. After a conventional EB image-development procedure, we newly added a resist-baking procedure using an EB exposure with a density of over 50 mC/cm2, and then performed a reactive-ion dry-etching. We found that the EB-baked resists were highly resistant against dry-etchings, resulting in preserving a clear-pattern of the EB-lithographed image up to a sub 50 nm scales. By using this EB baking method, we successfully fabricated nano-fluidics structures, and observed the smooth-translocation of single λ DNA molecules. This nano-scale dry-etching using EB-baked resist would be a general procedure for EB lithography fabrications of DNA nano-fluidics and sensing structures.
机译:我们开发了一种使用高电阻电子束抗蚀剂的纳米级电子束(EB)光刻程序,用于制造纳米生物纤维化。在传统的EB图像显影过程之后,我们新增使用密度超过50mc / cm2的EB暴露的抗蚀剂烘烤程序,然后进行反应离子干蚀刻。我们发现EB-烘焙抗蚀剂对干蚀刻具有高度耐抗性,导致将EB-LikoStraphy图像的透明模式保持在50nm尺寸。通过使用这种EB烘焙方法,我们成功地制造了纳米流体结构,并观察到单λDNA分子的光滑倾斜。这种使用EB-Baked Dirte的纳米级干蚀刻将是EB光刻制造DNA纳米流体和传感结构的一般程序。

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