Article abstract
Nature Materials 6, 782 - 789 (2007)
Published online: 5 August 2007 | doi:10.1038/nmat1974
Subject Categories: Polymers | Nanoscale materials | Design synthesis and processing
High-resolution electrohydrodynamic jet printing
Jang-Ung Park1, Matt Hardy1, Seong Jun Kang1,2, Kira Barton3, Kurt Adair3, Deep kishore Mukhopadhyay3, Chang Young Lee4, Michael S. Strano4, Andrew G. Alleyne3, John G. Georgiadis3, Placid M. Ferreira3 & John A. Rogers1,3
Abstract
Efforts to adapt and extend graphic arts printing techniques for demanding device applications in electronics, biotechnology and microelectromechanical systems have grown rapidly in recent years. Here, we describe the use of electrohydrodynamically induced fluid flows through fine microcapillary nozzles for jet printing of patterns and functional devices with submicrometre resolution. Key aspects of the physics of this approach, which has some features in common with related but comparatively low-resolution techniques for graphic arts, are revealed through direct high-speed imaging of the droplet formation processes. Printing of complex patterns of inks, ranging from insulating and conducting polymers, to solution suspensions of silicon nanoparticles and rods, to single-walled carbon nanotubes, using integrated computer-controlled printer systems illustrates some of the capabilities. High-resolution printed metal interconnects, electrodes and probing pads for representative circuit patterns and functional transistors with critical dimensions as small as 1 
m demonstrate potential applications in printed electronics.
- Department of Materials Science and Engineering, Beckman Institute, and Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, 1304 West Green Street, Urbana, Illinois 61801, USA
- Division of Advanced Technology, Korea Research Institute of Standards and Science, 1 Doryong-Dong, Yuseong-Gu, Daejon 305-340, South Korea
- Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
- Department of Chemical & Biomolecular Engineering, and Beckman Institute, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
Correspondence to: John A. Rogers1,3 e-mail: jrogers@uiuc.edu
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