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Nature. 2004 Mar 25;428(6981):386.

Microperiodic structures: direct writing of three-dimensional webs.

Author information

1
Frederick Seitz Materials Research Laboratory and Materials Science and Engineering Department, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.

Abstract

Applications are emerging that require the creation of fine-scale structures in three dimensions--examples include scaffolds for tissue engineering, micro-fluidic devices and photonic materials that control light propagation over a range of frequencies. But writing methods such as dip-pen nanolithography and ink-jet printing are either confined to two dimensions or beset by wetting and spreading problems. Here we use concentrated polyelectrolyte inks to write three-dimensional microperiodic structures directly without using masks. Our technique enables us to write arbitrary three-dimensional patterns whose features are nearly two orders of magnitude smaller than those attained with other multilayer printing techniques.

PMID:
15042080
DOI:
10.1038/428386a

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