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Updated: Jun 4, 2026

Glass-Based Devices to Generate Drops and Emulsions

Glass-Based Devices to Generate Drops and Emulsions

Published on: April 5, 2022

Note: Electrohydrodynamic atomization of liquid sheet.

Yi-Hsuan Lee¹, Jingjie Zhang, Da-Ren Chen

¹Department of Energy, Environmental, and Chemical Engineering, Washington University, St. Louis, Missouri 63130, USA.

The Review of Scientific Instruments

|March 3, 2011

Summary

This summary is machine-generated.

This study introduces a novel liquid sheet electrospray technique using notched circular slits for stable multijet operation. This method significantly increases liquid flowrate for high mass throughput applications.

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Area of Science:

Materials Science
Chemical Engineering
Fluid Dynamics

Background:

Traditional electrospray methods often use multiple capillaries, limiting mass throughput.
Achieving stable multijet operation in electrospray systems is crucial for industrial applications.

Purpose of the Study:

To present a novel electrohydrodynamic atomization technique using a liquid sheet.
To develop and investigate liquid-sheet electrospray heads with a circular slit exit and notches for enhanced performance.

Main Methods:

Utilized spray heads with a circular slit exit to form a thin liquid sheet.
Machined notches along the slit edge to bifurcate the sheet into multiple stable jets.
Investigated heads with 6, 12, and 20 notches for spraying low electrical conductivity liquids.

Main Results:

Demonstrated stable multijet operation with the novel liquid-sheet electrospray heads.
Achieved a 166-fold increase in maximal liquid flowrate with a 20-notched head compared to a single capillary.
Confirmed the technique's effectiveness for low electrical conductivity liquids.

Conclusions:

The liquid-sheet electrospray technique offers a viable alternative to conventional methods.
The developed heads show excellent potential for high mass throughput electrospray applications.
This approach allows for cost-effective production of spray heads with improved performance.