Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Intermolecular Forces03:13

Intermolecular Forces

65.3K
Atoms and molecules interact through bonds (or forces): intramolecular and intermolecular. The forces are electrostatic as they arise from interactions (attractive or repulsive) between charged species (permanent, partial, or temporary charges) and exist with varying strengths between ions, polar, nonpolar, and neutral molecules. The different types of intermolecular forces are ion–dipole, dipole–dipole, hydrogen bonds, and dispersion; among these, dipole–dipole, hydrogen...
65.3K
Theories of Dissolution: The Danckwerts' Model and Interfacial Barrier Model01:09

Theories of Dissolution: The Danckwerts' Model and Interfacial Barrier Model

547
Various dissolution theories provide insight into the factors that influence the dissolution rate. Danckwerts' Model suggests that turbulence, rather than a stagnant layer, characterizes the dissolution medium at the solid-liquid interface. In this model, the agitated solvent contains macroscopic packets that move to the interface via eddy currents, facilitating the absorption and delivery of the drug to the bulk solution. The regular replenishment of solvent packets maintains the...
547
Surface Tension, Capillary Action, and Viscosity02:57

Surface Tension, Capillary Action, and Viscosity

31.0K
Surface Tension
The various IMFs between identical molecules of a substance are examples of cohesive forces. The molecules within a liquid are surrounded by other molecules and are attracted equally in all directions by the cohesive forces within the liquid. However, the molecules on the surface of a liquid are attracted only by about one-half as many molecules. Because of the unbalanced molecular attractions on the surface molecules, liquids contract to form a shape that minimizes the number...
31.0K
Surface Tension and Surface Energy01:16

Surface Tension and Surface Energy

2.5K
When a paint brush is immersed in water, the bristles wave freely inside the water. When it is taken out, the bristles stick together. The reason behind this effect is surface tension.
Consider a beaker filled with liquid. The bulk molecules in the liquid experience equal attractive forces on all sides with the surrounding molecules. However, the surface molecules experience a net attractive force downward due to the bulk molecules. The surface of the liquid behaves like a stretched membrane,...
2.5K
Potential Due to a Polarized Object01:29

Potential Due to a Polarized Object

541
A neutral atom consists of a positively charged nucleus surrounded by a negatively charged electron cloud. When placed in an external electric field, the external electric force pulls the electrons and nucleus apart, opposite to the intrinsic attraction between the nucleus and the electrons. The opposing forces balance each other with a slight shift between the center of masses of the nucleus and the electron cloud, resulting in a polarized atom. On the other hand, a few molecules, like water,...
541
Excess Pressure Inside a Drop and a Bubble01:13

Excess Pressure Inside a Drop and a Bubble

2.6K
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.
2.6K

You might also read

Related Articles

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

Sort by
Same author

Membrane-separated electrodes enable high-rate low-energy electrochemical carbon capture.

Science advances·2026
Same author

Beyond the Debye-Hückel limit: Toward a general theory for concentrated electrolytes.

The Journal of chemical physics·2024
Same author

The Potential of Neural Network Potentials.

ACS physical chemistry Au·2024
Same author

Understanding the Electrochemical Extraction of Lithium from Ultradilute Solutions.

Environmental science & technology·2024
Same author

High-Throughput Aqueous Electrolyte Structure Prediction Using IonSolvR and Equivariant Graph Neural Network Potentials.

The journal of physical chemistry letters·2023
Same author

Effect of fluoro and hydroxy analogies of diglyme on sodium-ion storage in graphite: a computational study.

Physical chemistry chemical physics : PCCP·2023

Related Experiment Video

Updated: Nov 4, 2025

A Microfluidic System with Surface Patterning for Investigating Cavitation Bubble(s)–Cell Interaction and the Resultant Bioeffects at the Single-cell Level
11:14

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

11.9K

The surface potential explains ion specific bubble coalescence inhibition.

Timothy T Duignan1

  • 1School of Chemical Engineering, The University of Queensland, St Lucia, Brisbane 4072, Australia.

Journal of Colloid and Interface Science
|May 24, 2021
PubMed
Summary

Ions can prevent bubbles from coalescing in water through Gibbs-Marangoni pressure. However, ion mixtures alter this effect via electrostatic surface potential, explaining varied bubble coalescence inhibition.

Keywords:
Air–water interfaceElectrolyte solutionGibbs-Marangoni stressPoisson–Boltzmann equationSurface forcesSurface pressure

More Related Videos

A Method to Manipulate Surface Tension of a Liquid Metal via Surface Oxidation and Reduction
09:20

A Method to Manipulate Surface Tension of a Liquid Metal via Surface Oxidation and Reduction

Published on: January 26, 2016

15.7K
Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System
08:19

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

Published on: May 9, 2021

2.4K

Related Experiment Videos

Last Updated: Nov 4, 2025

A Microfluidic System with Surface Patterning for Investigating Cavitation Bubble(s)–Cell Interaction and the Resultant Bioeffects at the Single-cell Level
11:14

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

11.9K
A Method to Manipulate Surface Tension of a Liquid Metal via Surface Oxidation and Reduction
09:20

A Method to Manipulate Surface Tension of a Liquid Metal via Surface Oxidation and Reduction

Published on: January 26, 2016

15.7K
Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System
08:19

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

Published on: May 9, 2021

2.4K

Area of Science:

  • Colloid and Surface Science
  • Physical Chemistry
  • Electrochemistry

Background:

  • Bubble coalescence in aqueous solutions is influenced by ions, with Gibbs-Marangoni pressure proposed as a key factor.
  • The precise role of ion combinations in inhibiting bubble coalescence remains poorly understood.
  • Surface-active solutes can induce repulsive Gibbs-Marangoni pressure during thin film drainage.

Purpose of the Study:

  • To investigate the influence of electrostatic surface potential on Gibbs-Marangoni pressure in mixed electrolyte solutions.
  • To explain the peculiar dependence of bubble coalescence inhibition on specific ion combinations.
  • To elucidate the mechanism behind the correlation between electrolyte properties and bubble coalescence.

Main Methods:

  • A generalized Gibbs-Marangoni pressure equation was derived for multicomponent systems.
  • The modified Poisson-Boltzmann equation was employed to calculate interfacial electrostatic potentials.
  • Calculations were performed for five distinct electrolyte solutions involving four different ions.

Main Results:

  • Mixed ions with opposing surface propensities create an electrostatic surface potential that counteracts their natural tendencies.
  • This electrostatic effect significantly reduces the Gibbs-Marangoni pressure, thereby promoting bubble coalescence.
  • The findings explain why pure electrolytes correlate with surface tension effects on coalescence, but mixed electrolytes do not.

Conclusions:

  • Electrostatic surface potential, arising from ion distribution, is crucial in modulating Gibbs-Marangoni pressure and bubble coalescence.
  • The interplay between ion surface propensity and electrostatic interactions governs the effectiveness of coalescence inhibition.
  • This study provides a mechanistic explanation for the complex behavior of mixed electrolytes in controlling bubble coalescence.