Scaling laws for jet pulsations associated with high-resolution electrohydrodynamic printing

Hong Kyoon Choi, Jang Ung Park, O. Ok Park, Placid M. Ferreira, John G. Georgiadis, John A. Rogers

Research output: Contribution to journalArticlepeer-review

130 Citations (Scopus)


This paper presents simple scaling laws that describe the intrinsic pulsation of a liquid jet that forms at the tips of fine nozzles under electrohydrodynamically induced flows. The jet diameter is proportional to the square root of the nozzle size and inversely proportional to the electric field strength. The fundamental pulsation frequency is proportional to the electric field strength raised to the power of 1.5. These scaling relationships are confirmed by experiments presented here and by data from the literature. The results are important for recently developed high-resolution ink jet printing techniques and other applications using electrohydrodynamics.

Original languageEnglish
Article number123109
JournalApplied Physics Letters
Issue number12
Publication statusPublished - 2008

Bibliographical note

Funding Information:
The authors acknowledge the nano-CEMMS Center at University of Illinois, which is funded by NSF under Grant No. DMI-0328162. H. K. Choi acknowledges the BK21 overseas education program from Korea. H. K. Choi and J.-U. Park equally contributed to this work.

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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