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Related Experiment Video

Updated: Feb 5, 2026

High-resolution Patterning Using Two Modes of Electrohydrodynamic Jet: Drop on Demand and Near-field Electrospinning

High-resolution Patterning Using Two Modes of Electrohydrodynamic Jet: Drop on Demand and Near-field Electrospinning

Published on: July 10, 2018

A new method for producing uniform droplets by continuous-ink-jet technology.

Tongju Wang¹, Jian Lin¹, Xingye Guo¹

¹School of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, People's Republic of China.

The Review of Scientific Instruments

|September 7, 2018

Summary

A new electromagnetic system simplifies droplet generation for continuous-ink-jet printing. This method allows control over droplet size and uniformity by adjusting perturbation frequency.

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Area of Science:

Fluid Dynamics
Materials Science
Engineering

Background:

Continuous-ink-jet printing relies on controlled droplet formation.
Gas pressure and jet perturbation are key control parameters.
A simple method for perturbation is lacking in current technology.

Purpose of the Study:

To develop a novel and simple system for generating perturbation in continuous-ink-jet printing.
To investigate the effect of electromagnetic force perturbation on droplet formation.
To explore methods for controlling droplet size and uniformity.

Main Methods:

Constructed a novel system utilizing electromagnetic force for perturbation.
Conducted experiments using distilled water.
Varied disturbance frequency and monitored droplet formation.

Main Results:

Identified three distinct droplet formation modes based on disturbance frequency.
Achieved uniform droplet production within a specific frequency range at constant gas pressure.
Observed that jet tip variation significantly impacts uniform droplet formation.
Demonstrated that droplet size can be controlled by adjusting disturbance frequency.

Conclusions:

The developed electromagnetic perturbation system offers a simple and effective solution for continuous-ink-jet printing.
Controlling disturbance frequency is crucial for achieving uniform droplet formation and size.
Further research into jet tip dynamics can optimize droplet production.