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Science 15 October 1999:
Vol. 286. no. 5439, p. 373
DOI: 10.1126/science.286.5439.373f
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This Week in Science

The lithographic methods used to print magazines in color or to fabricate integrated circuits return several times to the original substrate and print additional features in registry with those already on the surface. Hong et al. (p. 523; see the news story by Service) show that a recently demonstrated scanning probe method for writing nanoscale lines or dots on a surface, "dip pen" nanolithography, can now write on a surface several times in different "colors." Registration marks on the surface allow a line of organic molecules to be placed between existing lines of a different chemical composition without disturbing the original pattern. New lines can be placed within 5 nanometers of existing lines.




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Science. ISSN 0036-8075 (print), 1095-9203 (online)