Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Excess Pressure Inside a Drop and a Bubble

Excess Pressure Inside a Drop and a Bubble

The shape of a small drop of liquid can be considered spherical, neglecting the effect of gravity. This drop can further be considered as two equal hemispherical drops put together due to surface tension. The forces acting on the spherical drop are due to the pressure of the liquid inside the drop, the pressure due to air outside the drop, and the force due to the surface tension acting on the two hemispherical drops.

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Surgery-based treatment and prognostic factors in patients with limited-stage small cell lung cancer: a retrospective cohort study.

Frontiers in oncology·2026

Same author

Editorial Expression of Concern: Hypermethylation-mediated inactivation of miR-124 predicts poor prognosis and promotes tumor growth at least partially through targeting EZH2/H3K27me3 in ESCC.

Clinical & experimental metastasis·2026

Same author

Effects of lower limb exoskeleton robot-assisted rehabilitation on motor function, activities of daily living, and electromyography in hemiplegic stroke: a randomized controlled trial.

BMC neurology·2026

Same author

Gut Microbiota, Insulin Resistance, and Alzheimer's Disease: A Narrative Review of Mechanistic Links and Therapeutic Perspectives.

International journal of general medicine·2026

Same author

A Hydrogel-Based 3D Microfluidic Platform with Optimized Flow and Mass Transfer for Rapid Antimicrobial Susceptibility Testing.

Analytical chemistry·2026

Same author

Embryo metabolite analysis and implantation potential prediction using chemiluminescent microfluidic chips with dielectric wetting valves.

Nature communications·2026

Same journal

Rayleigh damping for approximating Lamb wave attenuation in finite element simulations.

Ultrasonics·2026

Same journal

MUnet: A model-based unrolled reconstruction framework for computational photoacoustic imaging.

Ultrasonics·2026

Same journal

Uncovering the mechanism of ultrasonic cavitation-induced deagglomeration of 7-ADCA agglomerates.

Ultrasonics·2026

Same journal

Identifiability limits in ultrasonic microstructure characterisation using attenuation and velocity features: Canonical analysis and stochastic surrogate modelling.

Ultrasonics·2026

Same journal

A methodology to estimate the ultrasonic p-wave velocity of coarse aggregates in concrete.

Ultrasonics·2026

Same journal

Ultrasonic guided wave damage imaging using the time difference coefficient between direct and scattered waves.

Ultrasonics·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Jun 18, 2026

Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System

Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System

Published on: May 9, 2021

Cavitation microstreaming and stress fields created by microbubbles.

James Collis¹, Richard Manasseh, Petar Liovic

¹Department of Mechanical Engineering, University of Melbourne, VIC 3010, Melbourne, Australia.

|November 10, 2009

Summary

This summary is machine-generated.

Ultrasound-driven microbubbles create cavitation microstreaming patterns that enhance therapeutic effects. Changing sound frequency alters these patterns, offering a new method for improving sonoporation and sonothrombolysis.

More Related Videos

Imaging and Quantification of the Area of Fast-Moving Microbubbles Using a High-Speed Camera and Image Analysis

Imaging and Quantification of the Area of Fast-Moving Microbubbles Using a High-Speed Camera and Image Analysis

Published on: September 5, 2020

A Microfluidic System with Surface Patterning for Investigating Cavitation Bubble(s)–Cell Interaction and the Resultant Bioeffects at the Single-cell Level

A Microfluidic System with Surface Patterning for Investigating Cavitation Bubble(s)–Cell Interaction and the Resultant Bioeffects at the Single-cell Level

Published on: January 10, 2017

Related Experiment Videos

Last Updated: Jun 18, 2026

Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System

Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System

Published on: May 9, 2021

Imaging and Quantification of the Area of Fast-Moving Microbubbles Using a High-Speed Camera and Image Analysis

Imaging and Quantification of the Area of Fast-Moving Microbubbles Using a High-Speed Camera and Image Analysis

Published on: September 5, 2020

A Microfluidic System with Surface Patterning for Investigating Cavitation Bubble(s)–Cell Interaction and the Resultant Bioeffects at the Single-cell Level

A Microfluidic System with Surface Patterning for Investigating Cavitation Bubble(s)–Cell Interaction and the Resultant Bioeffects at the Single-cell Level

Published on: January 10, 2017

Area of Science:

Acoustic cavitation
Biomedical engineering
Ultrasound therapeutics

Background:

Cavitation microstreaming from microbubbles is key to ultrasound therapies like sonoporation and sonothrombolysis.
Understanding microbubble behavior near surfaces is crucial for optimizing these treatments.

Purpose of the Study:

To investigate the diverse microstreaming patterns around surface-bound microbubbles driven by ultrasound.
To analyze the relationship between oscillation modes, sound frequency, and resulting shear stress/stretch distributions.
To evaluate the potential of frequency-based pattern control for enhancing therapeutic ultrasound applications.

Main Methods:

Utilized microscopic particle-image velocimetry (micro-PIV) to visualize and analyze microstreaming patterns.
Experimented with microbubbles significantly larger than those used clinically.
Varied ultrasound driving frequency to observe changes in microstreaming patterns and associated forces.

Main Results:

Identified multiple distinct microstreaming patterns around surface-bound microbubbles, each linked to specific oscillation modes.
Demonstrated that changing sound frequency effectively switches between these patterns.
Observed significant variations in shear stress and stretch/compression distributions across different patterns, impacting therapeutic efficacy zones.

Conclusions:

Ultrasound-driven microstreaming is a viable mechanism for therapeutic agent mixing and molecular delivery across cell membranes.
Frequency-dependent microstreaming patterns offer a controllable method to potentially enhance sonoporation and sonothrombolysis.
Frequency-based pattern alternation presents a promising alternative to increasing acoustic pressure for therapeutic enhancement.