Langmuir, Vol.20, No.6, 2050-2053, 2004
Lithography with a focused soft X-ray beam and a monomolecular resist
A zone-plate-focused soft X-ray microbeam was utilized for direct patterning of a monomolecular resist: aliphatic and aromatic self-assembled monolayers. The fabricated patterns were subsequently imaged and characterized by a scanning photoelectron microscope (SPEM) using the same microbeam as the excitation source. The observed contrasts could be explained in terms of specific beam-resist interactions. The spatial resolution of the X-ray patterning was about 0.5 mum, which was mostly determined by the current SPEM settings and can be noticeably improved.