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Proceedings Paper

MxL: pseudo-maskless high-throughput nanolithography
Author(s): Charles D. Schaper
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Paper Abstract

A novel chemical procedure is described that presents, for the first time, a dissolvable template (as opposed to a hard or soft template) for printing. The method, called Molecular Transfer Lithography (MxL), is a pseudo-maskless approach to high-throughput fabrication of devices over large areas with feature sizes that can extend below 100 nm. The MxL procedure utilizes a chemical process that replicates the surface topography of a master pattern into soluble polymeric templates. The template is dissolvable in water but not most organic materials. This property of differential solubility is useful for transferring topography or functional materials onto substrate surfaces. The template is generally chemically dissolved at the conclusion of the pattern formation process. The paper presents a variety of printing strategies and results including lines at 53 nm, three-dimensional patterns, 250 nm contact hole levels, diffraction and optical structures and 200 mm wafer printing. The technique is also useful for planarization. Multi-level printing is achieved by integration of the MxL process and dissolvable templates with standard contact aligners.

Paper Details

Date Published: 16 June 2003
PDF: 12 pages
Proc. SPIE 5037, Emerging Lithographic Technologies VII, (16 June 2003); doi: 10.1117/12.484420
Show Author Affiliations
Charles D. Schaper, Stanford Univ. (United States)

Published in SPIE Proceedings Vol. 5037:
Emerging Lithographic Technologies VII
Roxann L. Engelstad, Editor(s)

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