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Science 15 October 1999:
Vol. 286. no. 5439, pp. 523 - 525
DOI: 10.1126/science.286.5439.523
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Reports

Multiple Ink Nanolithography: Toward a Multiple-Pen Nano-Plotter

Seunghun Hong, Jin Zhu, Chad A. Mirkin *

The formation of intricate nanostructures will require the ability to maintain surface registry during several patterning steps. A scanning probe method, dip-pen nanolithography (DPN), can be used to pattern monolayers of different organic molecules down to a 5-nanometer separation. An "overwriting" capability of DPN allows one nanostructure to be generated and the areas surrounding that nanostructure to be filled in with a second type of "ink."

Department of Chemistry and NU Center for Nanofabrication and Molecular Self-Assembly, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA.
*   To whom correspondence should be addressed. E-mail: camirkin{at}chem.nwu.edu

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