A volume change thermal lithography technique
We have studied a lithography technique, which we term Volume change thermal lithography for fabricating minute dot structures with dimensions of under 100 nm. The temperature distribution inside a focused laser beam and a special multilayer consisting of TbFeCo and ZnSSiO2 films were utilized for their fabrication. TbFeCo and ZnSSiO2 materials mutually interdiffuse when heated and their volume consequently increases. We were able successfully to show the potential of this technique for producing minute dots very close to each other, whose size and distance apart are far smaller than the optical diffraction limit in optics.
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