Abstract
We discuss new results concerning the mechanism, characteristics and application potentialities of a novel method that allows an image to be generated in some positive resists directly during exposure by an electron beam in vacuum. In particular, using the PMMA resist as an example, we show that this method is very convenient for obtaining micro- and nano-reliefs with a rounded cross-section profile. Examples are given of obtaining 3D-structures with good accuracy of image vertical size and low surface roughness. In the authors opinion, the data presented show, on the whole, that the suggested method has application potentialities for the manufacture of diffractive optical elements.
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