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On Ejecting Colloids Against Capillarity from Sub-micrometer Openings: On-Demand Dielectrophoretic Nanoprinting

Authors

  • Niklas C. Schirmer,

    1. ETH Zurich, Laboratory of Thermodynamics in Emerging, Technologies Sonneggstr. 3, 8092 Zurich (Switzerland), tel: +41 44 632 27 38, fax: +41 44 632 11 76
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  • Carmen Kullmann,

    1. ETH Zurich, Laboratory of Thermodynamics in Emerging, Technologies Sonneggstr. 3, 8092 Zurich (Switzerland), tel: +41 44 632 27 38, fax: +41 44 632 11 76
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  • Martin S. Schmid,

    1. ETH Zurich, Laboratory of Thermodynamics in Emerging, Technologies Sonneggstr. 3, 8092 Zurich (Switzerland), tel: +41 44 632 27 38, fax: +41 44 632 11 76
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  • Brian R. Burg,

    1. ETH Zurich, Laboratory of Thermodynamics in Emerging, Technologies Sonneggstr. 3, 8092 Zurich (Switzerland), tel: +41 44 632 27 38, fax: +41 44 632 11 76
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  • Timo Schwamb,

    1. ETH Zurich, Laboratory of Thermodynamics in Emerging, Technologies Sonneggstr. 3, 8092 Zurich (Switzerland), tel: +41 44 632 27 38, fax: +41 44 632 11 76
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  • Dimos Poulikakos

    Corresponding author
    1. ETH Zurich, Laboratory of Thermodynamics in Emerging, Technologies Sonneggstr. 3, 8092 Zurich (Switzerland), tel: +41 44 632 27 38, fax: +41 44 632 11 76
    • ETH Zurich, Laboratory of Thermodynamics in Emerging, Technologies Sonneggstr. 3, 8092 Zurich (Switzerland), tel: +41 44 632 27 38, fax: +41 44 632 11 76.
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Abstract

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Complex pattern generation of 2D and 3D structures exceeding 145 000 dpi in resolution is demonstrated by a non-contact, on-demand, colloid ejection and printing method at atmospheric conditions. The method relies on the DC dielectrophoretic actuation of uncharged nanoparticles in colloidal suspensions, driven by short DC voltage pulses, generating large localized electric field gradients in an orifice of O(100 nm).

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