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Related Experiment Video

Updated: Jul 12, 2026

Plasmid Stability Analysis with Open-Source Droplet Microfluidics

Plasmid Stability Analysis with Open-Source Droplet Microfluidics

Published on: December 27, 2024

Millikan "oil drop" stabilized by growth.

L K Sun, A W Gertler, H Reiss

Science (New York, N.Y.)

|January 26, 1979

Summary

A diffusion cloud chamber allows qualitative study of liquid drop dynamics. Researchers can control droplet size and isolate single drops using electric fields at saturation conditions.

Area of Science:

Thermodynamics
Fluid Dynamics
Physical Chemistry

Background:

Liquid drop behavior is crucial in various physical phenomena.
Understanding dynamic properties aids in predicting phase transitions and aerosol formation.
Previous studies lacked precise control over droplet environments.

Purpose of the Study:

To qualitatively investigate dynamic properties of liquid drops.
To demonstrate control over droplet size and isolation using electric fields.
To explore droplet behavior at the plane of saturation (p/ps = 1).

Main Methods:

Utilized a diffusion cloud chamber.
Suspended liquid drops in a controlled electric field.
Maintained conditions at the plane of saturation (p/ps = 1).

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Varied electric field strength to manipulate droplet size.

Main Results:

Successfully suspended liquid drops at saturation.
Demonstrated the ability to alter droplet size by adjusting electric field strength.
Showcased the isolation of individual droplets for detailed observation.
Qualitatively observed dynamic properties of suspended droplets.

Conclusions:

A diffusion cloud chamber with electric fields provides a viable method for studying liquid drop dynamics.
Precise control over droplet size and isolation is achievable.
This technique offers insights into fundamental droplet behavior under controlled saturation conditions.