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

Contact Angle01:13

Contact Angle

When a solid is dipped inside a liquid, the liquid surface becomes curved near the contact. For some solid–liquid interfaces, the liquid is pulled up along the solid, while for others, the liquid surface is convex or depressed near the solid surface. This phenomenon can be explained using the concept of cohesive and adhesive forces.
The adhesive force is the molecular force between molecules of different materials, that is, between the molecules of the solid and the liquid. The cohesive force...
Types of Friction Problems01:27

Types of Friction Problems

Friction is an essential concept in physics, engineering, and everyday life. It is the force that opposes the relative motion or tendency of such motion between two surfaces in contact. One of the most common types of friction encountered in various applications is dry friction. Dry friction problems can be broadly categorized into three types, each with unique characteristics and challenges.
The first type of dry friction problem involves situations where there is no apparent impending motion.
Relating Angular And Linear Quantities - I01:09

Relating Angular And Linear Quantities - I

If the rotational definitions are compared with the definitions of linear kinematic variables from motion along a straight line and motion in two and three dimensions, we can observe a mapping of the linear variables to the rotational ones.
When comparing the linear and rotational variables individually, the linear variable of position has physical units of meters, whereas the angular position variable has dimensionless units of radians, as it is the ratio of two lengths. The linear velocity...
Unsymmetric Bending - Angle of Neutral Axis01:15

Unsymmetric Bending - Angle of Neutral Axis

Unsymmetrical bending occurs when a structural member is subjected to bending moments in a plane that does not align with the member's principal axes. This scenario typically arises in beams and other structural components when loads are applied at non-ideal angles, introducing complexities in stress analysis.
When a bending moment is applied at an angle θ concerning the vertical axis of a symmetrical member, it can be resolved into components along the member's principal centroidal axes. The...
Angle of Twist - Elastic Range01:13

Angle of Twist - Elastic Range

Consider a cylindrical shaft with a length denoted by L and a consistent cross-sectional radius referred to as r. This shaft undergoes a torque at the free end. The highest shearing strain within the shaft is directly proportional to the twist angle and the radial distance from the shaft axis. When the shaft behaves elastically, this shearing strain can be articulated using variables such as the applied torque, radial distance, the polar moment of inertia, and the modulus of rigidity. By...
Rotation with Constant Angular Acceleration - II01:16

Rotation with Constant Angular Acceleration - II

Kinematics is the description of motion. The kinematics of rotational motion discusses the relationships between rotation angle, angular velocity, angular acceleration, and time. One can describe many things with great precision using kinematics, but kinematics does not consider causes. For example, a large angular acceleration describes a very rapid change in angular velocity without any consideration of its cause. Thus, rotational kinematics does not represent the laws of nature.
The first...

You might also read

Related Articles

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

Sort by
Same author

Magnetic water treatment-A review of the latest approaches.

Chemosphere·2018
Same author

Synthesis of hydroxyapatite for biomedical applications.

Advances in colloid and interface science·2017
Same author

Surface properties of Ti-6Al-4V alloy part I: Surface roughness and apparent surface free energy.

Materials science & engineering. C, Materials for biological applications·2016
Same author

Properties of Langmuir and solid supported lipid films with sphingomyelin.

Advances in colloid and interface science·2014
Same author

Comparison of contact angle hysteresis of different probe liquids on the same solid surface.

Colloid and polymer science·2013
Same author

Phenol adsorption on closed carbon nanotubes.

Journal of colloid and interface science·2011

Related Experiment Video

Updated: Jul 15, 2026

Microtensiometer for Confocal Microscopy Visualization of Dynamic Interfaces
08:05

Microtensiometer for Confocal Microscopy Visualization of Dynamic Interfaces

Published on: September 9, 2022

On some relations between advancing, receding and Young's contact angles.

Emil Chibowski1

  • 1Department of Physical Chemistry, Interfacial Phenomena, Faculty of Chemistry, Maria Curie, Sklodowska University, 20-031 Lublin, Poland. emil@hermes.umcs.lublin.pl

Advances in Colloid and Interface Science
|April 24, 2007
PubMed
Summary

This study explores equilibrium contact angles, crucial for understanding surface properties. A new relationship between advancing and receding angles helps calculate surface free energy, showing promise for materials like paraffin wax but requiring more data for polypropylene.

More Related Videos

Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions
11:51

Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions

Published on: February 22, 2018

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets
06:26

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets

Published on: May 15, 2017

Related Experiment Videos

Last Updated: Jul 15, 2026

Microtensiometer for Confocal Microscopy Visualization of Dynamic Interfaces
08:05

Microtensiometer for Confocal Microscopy Visualization of Dynamic Interfaces

Published on: September 9, 2022

Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions
11:51

Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions

Published on: February 22, 2018

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets
06:26

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets

Published on: May 15, 2017

Area of Science:

  • Surface Science
  • Materials Science
  • Physical Chemistry

Background:

  • Experimental determination of equilibrium contact angles is challenging.
  • Theoretical verification of contact angles is essential for material characterization.
  • Contact angle hysteresis impacts surface free energy calculations.

Purpose of the Study:

  • To discuss problems in determining and verifying equilibrium contact angles.
  • To describe and verify a relationship between advancing/receding contact angles and equilibrium contact angle.
  • To assess the calculation of surface free energy for different materials using this relationship.

Main Methods:

  • Literature data review on contact angle determination.
  • Analysis of the relationship between advancing, receding, and equilibrium contact angles.
  • Experimental verification using paraffin wax and polypropylene with probe liquids (water, ethylene glycol).
  • Application of contact angle hysteresis and vibration methods.

Main Results:

  • A relationship between advancing and receding contact angles versus equilibrium contact angle was described and verified.
  • Consistent surface free energy values were calculated for paraffin wax using different probe liquids.
  • Inconsistencies were observed for polypropylene, indicating a need for further investigation.

Conclusions:

  • The proposed relationship aids in calculating surface free energy.
  • The method is reliable for paraffin wax but shows limitations for polypropylene.
  • Further experimental data on equilibrium contact angles are required to validate the relationship across various materials.