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

Surface Tension, Capillary Action, and Viscosity02:57

Surface Tension, Capillary Action, and Viscosity

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...
Cohesion01:07

Cohesion

Cohesion is the attraction between molecules of the same type, such as water molecules. Water molecules have an overall neutral charge but are polar molecule. An oxygen atom in one water molecule has a partial negative charge that can bind to a hydrogen atom with a partial positive charge in a second water molecule, forming a hydrogen bond. Each water molecule can form up to four hydrogen bonds with other water molecules. Hydrogen bonds are responsible for water's cohesive nature.
On a surface,...
Surface Tension of Fluid01:22

Surface Tension of Fluid

Surface tension is a fundamental property of fluids, occurring at the boundary between a liquid and a gas or between two immiscible liquids. This phenomenon arises from the cohesive forces between molecules at the fluid's surface, creating an effect similar to a stretched elastic membrane. Inside each fluid, molecules are equally attracted in all directions by neighboring molecules, but surface molecules experience a net inward force, resulting in surface tension.
Surface tension varies with...
Phase Transitions: Vaporization and Condensation02:39

Phase Transitions: Vaporization and Condensation

The physical form of a substance changes on changing its temperature. For example, raising the temperature of a liquid causes the liquid to vaporize (convert into vapor). The process is called vaporization—a surface phenomenon. Vaporization occurs when the thermal motion of the molecules overcome the intermolecular forces, and the molecules (at the surface) escape into the gaseous state. When a liquid vaporizes in a closed container, gas molecules cannot escape. As these gas phase molecules...
States of Water01:23

States of Water

Water exists in any one of the three classical states: solid (ice), liquid (water), and gas (steam or water vapor). The state of water depends on i) the intermolecular forces that draw molecules together and ii) the kinetic energy that leads to movements that pull them apart.
Water freezes when the intermolecular forces are greater than the kinetic energy. Unlike most other substances, water is less dense in its solid state than in its liquid state. This is because each water molecule can form...
Surface Tension01:24

Surface Tension

Surface tension is defined as the force per unit length (γ) acting along the surface of a liquid. It arises due to strong intermolecular forces of attraction. A molecule located inside the bulk of the liquid is surrounded by other molecules and experiences equal forces in all directions. However, a molecule at the surface experiences unbalanced forces because there are more neighboring molecules below than above. This creates a net inward force that pulls surface molecules toward the interior,...

You might also read

Related Articles

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

Sort by
Same author

Dynamic and Equilibrium Contribution of Nematic Order in Wetting and Contact Angles.

The journal of physical chemistry. B·2023
Same author

Dynamic contact angles in oil-aqueous polymer solutions.

Physical chemistry chemical physics : PCCP·2017
Same author

Stability of two-dimensional growth of a packed body of proteins on a solid surface.

Langmuir : the ACS journal of surfaces and colloids·2011
Same author

Labyrinthine instability in thin liquid films.

Journal of physics. Condensed matter : an Institute of Physics journal·2011
Same author

Inhomogeneity of adsorbed proteins on a solid surface.

Colloids and surfaces. B, Biointerfaces·2009
Same author

The influence of adaptogens on ultraweak biophoton emission: a pilot-experiment.

Phytotherapy research : PTR·2009

Related Experiment Video

Updated: Jul 11, 2026

Fabrication of Superhydrophobic Metal Surfaces for Anti-Icing Applications
11:20

Fabrication of Superhydrophobic Metal Surfaces for Anti-Icing Applications

Published on: August 15, 2018

Condensation of a non-wetting fluid on a solid surface.

P Neogi1

  • 1Chemical and Biological Engineering, University of Missouri-Rolla, Rolla, MO 65409-1230, USA. neogi@umr.edu

Journal of Colloid and Interface Science
|September 28, 2007
PubMed
Summary

This study models droplet movement during condensation. High condensation rates cause droplet spreading proportional to heat flux and inversely to contact angle, matching experimental data.

Area of Science:

  • Physics
  • Fluid Dynamics
  • Thermodynamics

Background:

  • Droplet dynamics are crucial in phase change processes.
  • Understanding condensation-driven motion is key for heat transfer applications.

Purpose of the Study:

  • To theoretically investigate droplet motion induced by condensation.
  • To develop models for two distinct condensation rate regimes.

Main Methods:

  • Theoretical modeling of droplet dynamics.
  • Analysis of condensation effects on droplet dimensions and motion.
  • Comparison of model predictions with experimental data.

Main Results:

  • A model for high condensation rates shows constant spreading rate, dependent on heat flux and contact angle, aligning with experiments.

More Related Videos

Light-induced Patterning and Grafting for Slippery Surfaces based on Silane-coated Nanoporous Structures
07:23

Light-induced Patterning and Grafting for Slippery Surfaces based on Silane-coated Nanoporous Structures

Published on: November 14, 2025

Studying Surfactant Effects on Hydrate Crystallization at Oil-Water Interfaces Using a Low-Cost Integrated Modular Peltier Device
06:31

Studying Surfactant Effects on Hydrate Crystallization at Oil-Water Interfaces Using a Low-Cost Integrated Modular Peltier Device

Published on: March 18, 2020

Related Experiment Videos

Last Updated: Jul 11, 2026

Fabrication of Superhydrophobic Metal Surfaces for Anti-Icing Applications
11:20

Fabrication of Superhydrophobic Metal Surfaces for Anti-Icing Applications

Published on: August 15, 2018

Light-induced Patterning and Grafting for Slippery Surfaces based on Silane-coated Nanoporous Structures
07:23

Light-induced Patterning and Grafting for Slippery Surfaces based on Silane-coated Nanoporous Structures

Published on: November 14, 2025

Studying Surfactant Effects on Hydrate Crystallization at Oil-Water Interfaces Using a Low-Cost Integrated Modular Peltier Device
06:31

Studying Surfactant Effects on Hydrate Crystallization at Oil-Water Interfaces Using a Low-Cost Integrated Modular Peltier Device

Published on: March 18, 2020

  • A model for low condensation rates, based on viscous forces, partially explains experimental observations.

    • Conclusions:

    • Condensation significantly influences droplet movement.
    • The developed models provide insights into droplet behavior under varying condensation conditions.