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On Ejecting Colloids Against Capillarity from Sub‐micrometer Openings: On‐Demand Dielectrophoretic Nanoprinting
Author(s) -
Schirmer Niklas C.,
Kullmann Carmen,
Schmid Martin S.,
Burg Brian R.,
Schwamb Timo,
Poulikakos Dimos
Publication year - 2010
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201001355
Subject(s) - colloid , nanotechnology , body orifice , materials science , micrometer , on demand , field (mathematics) , electrohydrodynamics , electric field , computer science , optics , mechanical engineering , engineering , chemical engineering , physics , multimedia , mathematics , quantum mechanics , pure mathematics
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).