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Airflow Assisted Electrohydrodynamic Jet Printing: An Advanced Micro-Additive Manufacturing Technique

[+] Author Affiliations
Lai Yu Leo Tse, Kira Barton

University of Michigan, Ann Arbor, MI

Paper No. MSEC2015-9403, pp. V001T02A066; 8 pages
doi:10.1115/MSEC2015-9403
From:
  • ASME 2015 International Manufacturing Science and Engineering Conference
  • Volume 1: Processing
  • Charlotte, North Carolina, USA, June 8–12, 2015
  • Conference Sponsors: Manufacturing Engineering Division
  • ISBN: 978-0-7918-5682-6
  • Copyright © 2015 by ASME

abstract

Electrohydrodynamic jet (e-jet) printing is a growing technology for high resolution (<20μm) printing. It enjoys the advantages of other additive manufacturing technologies and is compatible with a large range of materials. E-jet applications include electronic fabrication, high-resolution prototyping, and bio-medical devices. Despite the diverse range of applications, e-jet printing dynamics are sensitive to varying standoff heights and changing electric fields. As such, conventional e-jet printing generally consists of a conductive nozzle printing onto a flat, conductive substrate. To address this limitation, this paper presents an airflow assisted e-jet printhead that is shown to greatly reduce the substrate effects while providing good printing resolution (<15μm). The working principle and design challenges are provided. Experimental demonstrations validate the performance capabilities of the modified e-jet printhead.

Copyright © 2015 by ASME

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