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Freeform fabrication of metallic patterns by unforced electrohydrodynamic jet printing of organic silver ink

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Abstract

Electrohydrodynamic jet printing (EHJP) technology was demonstrated by fabricating metallic patterns, using a commercialized silver metallo-organic ink. The electrospray was operated in a full voltage-controlled form but without the auxiliary assistance of gas pressure. The freeform deposition of basic structures of patterns was demonstrated, for the first time, by using the unforced electrospray. After heat treatment at 250 °C, an energy-dispersive X-ray spectrum confirmed that the main composition was silver in the patterns. Scanning electron microscope analysis revealed that dense packed silver crystallites were present in the fabricated patterns. An electrical resistivity of 4.34 × 10−8 Ωm, close to the theoretical resistivity of bulk silver, was obtained in the 100 μm-width printed tracks.

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Acknowledgments

This work is supported by the Engineering and Physical Sciences Research Council (EPSRC, UK), grant no.: EP/E03330X/1.

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Authors and Affiliations

  1. School of Engineering and Materials Science, Queen Mary, University of London, London, E1 4NS, UK

    Ke Wang, Mark D. Paine & John P. W. Stark

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  1. Ke Wang
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  2. Mark D. Paine
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  3. John P. W. Stark
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Correspondence to Ke Wang.

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Wang, K., Paine, M.D. & Stark, J.P.W. Freeform fabrication of metallic patterns by unforced electrohydrodynamic jet printing of organic silver ink. J Mater Sci: Mater Electron 20, 1154–1157 (2009). https://doi.org/10.1007/s10854-008-9843-6

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  • DOI: https://doi.org/10.1007/s10854-008-9843-6

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