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

Equilibrium Conditions for a Particle01:23

Equilibrium Conditions for a Particle

When an object is in equilibrium, it is either at rest or moving with a constant velocity. There are two types of equilibrium: static and dynamic. Static equilibrium occurs when an object is at rest, while dynamic equilibrium occurs when an object is moving with a constant velocity. In both cases, there must be a balance of forces acting on the object.
To understand the concept of equilibrium, let us first consider the forces acting on an object. When different forces act on an object, they can...
Static Equilibrium - II01:07

Static Equilibrium - II

Static equilibrium is a special case in mechanics that is very important in everyday life. It occurs when the net force and the net torque on an object or system are both zero. This means that both the linear and angular accelerations are zero. Thus, the object is at rest, or its center of mass is moving at a constant velocity. However, this does not mean that no forces are acting on the object within the system. In fact, there are very few scenarios on Earth in which no forces are acting upon...
Stability of Equilibrium Configuration01:23

Stability of Equilibrium Configuration

Understanding the stability of equilibrium configurations is a fundamental part of mechanical engineering. In any system, there are three distinct types of equilibrium: stable, neutral, and unstable.
A stable equilibrium occurs when a system tends to return to its original position when given a small displacement, and the potential energy is at its minimum. An example of a stable equilibrium is when a cantilever beam is fixed at one end and a weight is attached to the other end. If the weight...
Dynamic Equilibrium02:20

Dynamic Equilibrium

A reversible chemical reaction represents a chemical process that proceeds in both forward (left to right) and reverse (right to left) directions. When the rates of the forward and reverse reactions are equal, the concentrations of the reactant and product species remain constant over time and the system is at equilibrium. A special double arrow is used to emphasize the reversible nature of the reaction. The relative concentrations of reactants and products in equilibrium systems vary greatly;...
Static Equilibrium - I01:05

Static Equilibrium - I

A rigid body is said to be in dynamic equilibrium when both its linear and angular acceleration are zero, relative to an inertial frame of reference. This means that a body in equilibrium can be moving, but only when its linear and angular velocities are constant. A rigid body is said to be in static equilibrium when it is at rest in the selected frame of reference. The distinction between static equilibrium (e.g., a state of rest) and dynamic equilibrium (e.g, a state of uniform motion) is...
First Law: Particles in Two-dimensional Equilibrium01:18

First Law: Particles in Two-dimensional Equilibrium

Recall that a particle in equilibrium is one for which the external forces are balanced. Static equilibrium involves objects at rest, and dynamic equilibrium involves objects in motion without acceleration; but it is important to remember that these conditions are relative. For instance, an object may be at rest when viewed from one frame of reference, but that same object would appear to be in motion when viewed by someone moving at a constant velocity.
Newton's first law tells us about the...

You might also read

Related Articles

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

Sort by
Same author

Hand and wrist Osteo-articular bone defect: induced membrane technique indications.

Hand surgery & rehabilitation·2023
Same author

[French practical guidelines for the diagnosis and management of IPF - 2021 update, full version].

Revue des maladies respiratoires·2022
Same author

Very-high-frequency probes for atomic force microscopy with silicon optomechanics.

Microsystems & nanoengineering·2022
Same author

[French practical guidelines for the diagnosis and management of IPF - 2021 update, short version].

Revue des maladies respiratoires·2022
Same author

[Impact of AMARA VIEW™ interface on upper airway during nocturnal non invasive ventilation].

Revue des maladies respiratoires·2021
Same author

Comment on: Application of a new serratus anterior plane block in modified radical mastectomy under ultrasound guidance: A prospective, randomized controlled trial.

Journal of clinical anesthesia·2021
Same journal

Ambient stability and surface adhesion of 2D polyaramid nanofilms.

Faraday discussions·2026
Same journal

Spiers Memorial Lecture: Spin-mediated promotion of magnetic metal catalysts.

Faraday discussions·2026
Same journal

Helium spin-echo as a surface-sensitive probe of vibrational energy dissipation.

Faraday discussions·2026
Same journal

Near-infrared vibrational second harmonic generation: a new nonlinear interfacial vibrational spectroscopy.

Faraday discussions·2026
Same journal

CO on a Rh/Fe<sub>3</sub>O<sub>4</sub> single-atom catalyst: high-resolution infrared spectroscopy and near-ambient-pressure scanning tunnelling microscopy.

Faraday discussions·2026
Same journal

Evolution of size-selected Pt cluster catalysts on prototypical oxide supports.

Faraday discussions·2026
See all related articles

Related Experiment Video

Updated: Jul 5, 2026

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
08:55

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

Published on: June 7, 2018

Dynamical equilibrium in nanoalloys.

F Lequien1, J Creuze, F Berthier

  • 1Université Paris Sud, LEMHE/ICMMO, UMR 8182, Bât. 410, F91405, Orsay Cedex, France.

Faraday Discussions
|May 2, 2008
PubMed
Summary
This summary is machine-generated.

This study reveals how silver (Ag) atoms segregate on copper (Cu) clusters, initially at vertices and edges, then facets. A dynamic equilibrium emerges, causing facets to oscillate between Ag-rich and Cu-rich states.

More Related Videos

Determining the Mechanical Strength of Ultra-Fine-Grained Metals
05:04

Determining the Mechanical Strength of Ultra-Fine-Grained Metals

Published on: November 22, 2021

Applying Dynamic Strain on Thin Oxide Films Immobilized on a Pseudoelastic Nickel-Titanium Alloy
09:35

Applying Dynamic Strain on Thin Oxide Films Immobilized on a Pseudoelastic Nickel-Titanium Alloy

Published on: July 28, 2020

Related Experiment Videos

Last Updated: Jul 5, 2026

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
08:55

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

Published on: June 7, 2018

Determining the Mechanical Strength of Ultra-Fine-Grained Metals
05:04

Determining the Mechanical Strength of Ultra-Fine-Grained Metals

Published on: November 22, 2021

Applying Dynamic Strain on Thin Oxide Films Immobilized on a Pseudoelastic Nickel-Titanium Alloy
09:35

Applying Dynamic Strain on Thin Oxide Films Immobilized on a Pseudoelastic Nickel-Titanium Alloy

Published on: July 28, 2020

Area of Science:

  • Materials Science
  • Computational Chemistry
  • Surface Science

Background:

  • Phase separation in alloys like copper-silver (Cu-Ag) is crucial for material properties.
  • Understanding atomic segregation on surfaces is key to controlling alloy behavior.
  • Lattice-gas models provide a simplified yet powerful framework for studying such phenomena.

Purpose of the Study:

  • To investigate the segregation isotherm of silver (Ag) atoms on a copper (Cu) cluster.
  • To elucidate the atomistic mechanisms of segregation on different crystallographic facets.
  • To explore the emergence of dynamic equilibrium and its relation to phase transitions.

Main Methods:

  • Monte Carlo simulations using a lattice-gas model.
  • Analysis of segregation patterns on vertices, edges, and facets ((111), (100)) of a Cu-Ag cluster.
  • Investigation in both grand-canonical and canonical ensembles.

Main Results:

  • Ag segregation initiates at vertices, then edges, and finally (111) and (100) facets.
  • Segregation on facets begins at outer shells, creating heterogeneous compositions.
  • A dynamic equilibrium is observed where facets oscillate between Ag-rich and Cu-rich states.
  • Equivalent facets can exhibit significantly different concentrations due to this dynamic behavior.

Conclusions:

  • The study demonstrates a novel dynamic equilibrium in Ag segregation on Cu clusters, distinct from bulk phase separation.
  • This dynamic equilibrium is closely linked to surface phase transitions, specifically the Fowler-Guggenheim type.
  • The findings offer insights into controlling surface composition and properties of phase-separating alloys.