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

1.9K
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...
1.9K
First Law: Particles in Two-dimensional Equilibrium01:18

First Law: Particles in Two-dimensional Equilibrium

11.8K
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...
11.8K
First Law: Particles in One-dimensional Equilibrium01:10

First Law: Particles in One-dimensional Equilibrium

7.5K
Newton's first law of motion states that a body at rest remains at rest, or if in motion, remains in motion at constant velocity, unless acted on by a net external force. It also states that there must be a cause for any change in velocity (a change in either magnitude or direction) to occur. This cause is a net external force. For example, consider what happens to an object sliding along a rough horizontal surface. The object quickly grinds to a halt, due to the net force of friction. If...
7.5K

You might also read

Related Articles

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

Sort by
Same author

Observing the mechanism of delayed collapse in colloidal gels: Yielding while becoming stronger.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same author

The Combined Role of Silanols and Oxidative Stress in Determining Engineered Stone Dust Toxicity.

ACS organic & inorganic Au·2026
Same author

Critical surface phase behavior governs hydrophobic attraction between extended solutes.

The Journal of chemical physics·2025
Same author

Potential pulmonary toxic effects of Martian dust simulant.

iScience·2025
Same author

Absence of phagolysosomal activation and high clearance efficiency define the low pulmonary toxicity of short asbestos fibers.

Journal of hazardous materials·2025
Same author

Physico-chemical features and membranolytic activity of dust from low or no crystalline silica engineered stone with implications for toxicological assessment.

Scientific reports·2025

Related Experiment Video

Updated: Nov 18, 2025

A Protocol for Real-time 3D Single Particle Tracking
10:16

A Protocol for Real-time 3D Single Particle Tracking

Published on: January 3, 2018

15.1K

Phase Separation and Multibody Effects in Three-Dimensional Active Brownian Particles.

Francesco Turci1, Nigel B Wilding1

  • 1H. H. Wills Physics Laboratory, Tyndall Avenue, Bristol, BS8 1TL, United Kingdom.

Physical Review Letters
|February 5, 2021
PubMed
Summary

Active Brownian particles exhibit motility-induced phase separation, similar to simple fluids. This separation is driven by particle caging and multibody effects at high densities, not just pairwise attractions.

More Related Videos

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
11:03

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids

Published on: December 4, 2017

8.8K
Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures
10:56

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

Published on: May 20, 2014

12.4K

Related Experiment Videos

Last Updated: Nov 18, 2025

A Protocol for Real-time 3D Single Particle Tracking
10:16

A Protocol for Real-time 3D Single Particle Tracking

Published on: January 3, 2018

15.1K
An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
11:03

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids

Published on: December 4, 2017

8.8K
Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures
10:56

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

Published on: May 20, 2014

12.4K

Area of Science:

  • Statistical Mechanics
  • Soft Matter Physics
  • Active Matter Systems

Background:

  • Active Brownian particles (ABPs) are self-propelled entities exhibiting unique phase behaviors.
  • Motility-induced phase separation (MIPS) is a key phenomenon in ABPs, creating dense and dilute phases.
  • The relationship between MIPS and equilibrium phase separation in simple fluids remains an active research area.

Purpose of the Study:

  • To investigate the phase diagram of repulsive active Brownian particles in three dimensions.
  • To understand the underlying mechanisms driving phase separation in dense ABP systems.
  • To compare the behavior of ABPs with equilibrium fluids and identify emergent interactions.

Main Methods:

  • Conducting extensive 3D simulation studies of repulsive active Brownian particles.
  • Analyzing the phase diagram, including regions of MIPS and gas-crystal separation.
  • Employing information-theoretical measures to quantify n-body effective interactions from configurational structure.

Main Results:

  • The MIPS region is enclosed by a gas-crystal phase separation region.
  • Near-critical loci and structural crossovers are observed, analogous to simple fluids.
  • Pairwise interactions in the dilute limit are insufficient for phase separation; multibody effects due to particle caging at high densities are crucial.

Conclusions:

  • The phase behavior of repulsive ABPs is complex, involving both MIPS and crystalline ordering.
  • Emergent multibody interactions, driven by particle caging, are the primary cause of MIPS in dense systems.
  • This study provides a deeper understanding of non-equilibrium phase transitions in active matter systems.