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

Abstract

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). Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.