Related Experiment Video
Updated: Mar 31, 2026
08:19
Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System
Published on: May 9, 2021
2.9K
Determining hydrodynamic forces in bursting bubbles using DNA nanotube mechanics
Rizal F Hariadi1, Erik Winfree2, Bernard Yurke3
1Applied Physics, California Institute of Technology, Pasadena, CA 91125;
Summary
Ocean bubble rupture generates significant fluid shear forces, potentially driving early life self-replication. DNA nanotubes measured high elongational rates in bursting bubbles, revealing key forces in marine environments.
Area of Science:
- Oceanography
- Biophysics
- Fluid Dynamics
Background:
- Quantifying ocean fluid forces is crucial for understanding environmental phenomena and the origin of life.
- Breaking waves and bursting bubbles create intense hydrodynamic shear.
- Microscopic flows during bubble rupture may drive primitive self-replication.
Purpose of the Study:
- Investigate elongational rates in bursting bubbles in ocean conditions.
- Use DNA nanotubes as novel fluid flow sensors.
- Characterize the fragmentation volume and its relation to elongational flow rate.
Main Methods:
- Utilized DNA nanotubes to sense fluid flow.
- Experimented with aqueous bubble foams in laboratory buffer and ocean water.
- Measured elongational rates and fragmentation volume of bursting bubbles.
Main Results:
- Substantial volumes experience high elongational rates during bubble bursting.
- A 10 mm(3) air volume bubble generated rates of [Formula: see text] s(-1) in a [Formula: see text] [Formula: see text] fragmentation volume.
- Characterized the distribution of elongational strain rates.
Conclusions:
- Bursting bubbles generate significant shear rates relevant to marine environments.
- These forces could have facilitated the self-replication of early life forms (protobionts).
- Understanding these rates is key to assessing microbial shearing at the ocean surface.
