Direct writing of three-dimensional webs

Gregory M. Gratson, Mingjie Xu and Jennifer A. Lewis ()
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Gregory M. Gratson: University of Illinois at Urbana–Champaign
Mingjie Xu: University of Illinois at Urbana–Champaign
Jennifer A. Lewis: University of Illinois at Urbana–Champaign

Nature, 2004, vol. 428, issue 6981, 386-386

Abstract: Abstract Applications are emerging that require the creation of fine-scale structures in three dimensions — examples include scaffolds for tissue engineering1, micro-fluidic devices2 and photonic materials that control light propagation over a range of frequencies3. But writing methods such as dip-pen nanolithography4 and ink-jet printing5 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 techniques6.

Date: 2004
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DOI: 10.1038/428386a

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