Time resolved imaging of electrohydrodynamic jetting on demand induced by square pulse voltage

Seungmi Lee, Junyoung Song, Ho Kim, Jaewon Chung

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Electrohydrodynamic (EHD) printing is receiving much attention due to its high resolution printing capability, as well as its many advantages such as reduced manufacturing steps and non-toxic, flexible processes. However, many issues need be resolved before it can be widely used. In this work, to demonstrate EHD printing on demand, square pulse voltage signals are applied between a hole-type electrode and the nozzle supplied with working fluid from a reservoir at constant pressure. Continuous fine jet, pulsating fine jet, and pulsating droplet modes are observed depending on the voltage signal. To obtain the optimum voltage pulse duration, the change in the jetting start time is measured by varying the voltage configurations and hydrostatic pressure applied to the nozzle. Among the modes, the pulsating droplet mode is studied in detail for various voltage signals. Futhermore, the printing is demonstrated using the optimized voltage signal.

Original languageEnglish
Pages (from-to)89-97
Number of pages9
JournalJournal of Aerosol Science
Volume52
DOIs
Publication statusPublished - 2012 Oct 1

Fingerprint

Electrohydrodynamics
Imaging techniques
Printing
Electric potential
droplet
Nozzles
hydrostatic pressure
electrode
manufacturing
Hydrostatic pressure
fluid
demand
Electrodes
Fluids

Keywords

  • Continuous fine jet mode
  • Drop-on-demand (DOD)
  • Electrohydrodynamic (EHD)
  • Printing
  • Pulsating droplet mode
  • Pulsating fine jet mode

ASJC Scopus subject areas

  • Materials Science(all)
  • Environmental Chemistry
  • Pollution

Cite this

Time resolved imaging of electrohydrodynamic jetting on demand induced by square pulse voltage. / Lee, Seungmi; Song, Junyoung; Kim, Ho; Chung, Jaewon.

In: Journal of Aerosol Science, Vol. 52, 01.10.2012, p. 89-97.

Research output: Contribution to journalArticle

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