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

Role of Affect in Interpersonal Attraction01:24

Role of Affect in Interpersonal Attraction

237
Affect plays a crucial role in shaping interpersonal evaluations and perceptions. Emotions influence how individuals judge and respond to others, often determining whether interactions are viewed positively or negatively. This effect can manifest directly through interactions with the person in question or indirectly via associations with unrelated emotional experiences.Direct Effects of Affect on AttractionAffect directly influences interpersonal attraction when a person’s behavior...
237
The Influence of Affect on Cognition01:29

The Influence of Affect on Cognition

301
Positive affect significantly influences cognitive processes, including evaluation, memory, creativity, and social judgments. Compared to negative affect, positive emotional states promote more favorable interpretations of stimuli, cognitive flexibility, and heuristic processing. These effects highlight emotions' powerful role in shaping how individuals perceive, remember, and interact with the world.Influence on Evaluation and AttributionWhen individuals experience positive affect, they are...
301
The Influence of Cognition on Affect01:29

The Influence of Cognition on Affect

226
Cognition plays a pivotal role in shaping emotional experiences, as demonstrated by Schachter and Singer’s two-factor theory of emotion. According to this model, emotion arises from a combination of physiological arousal and cognitive interpretation. The body’s physiological response to stimuli is ambiguous and only gains emotional significance through cognitive labeling. For instance, an increased heart rate and adrenaline surge while standing near an attractive person may be...
226
Background and Environment Affect Phenotype02:27

Background and Environment Affect Phenotype

7.7K
Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
7.7K
Vapor Pressure02:34

Vapor Pressure

41.1K
When a liquid vaporizes in a closed container, gas molecules cannot escape. As these gas phase molecules move randomly about, they will occasionally collide with the surface of the condensed phase, and in some cases, these collisions will result in the molecules re-entering the condensed phase. The change from the gas phase to the liquid is called condensation. When the rate of condensation becomes equal to the rate of vaporization, neither the amount of the liquid nor the amount of the vapor...
41.1K
Definition and Measurement of Pressure: Atmospheric Pressure, Barometer, and Manometer02:57

Definition and Measurement of Pressure: Atmospheric Pressure, Barometer, and Manometer

43.6K
Gas pressure is caused by force exerted by gas molecules colliding with the surfaces of objects. Although the force of each collision is very small, any surface of an appreciable area experiences a large number of collisions in a short time, which can result in high pressure.
43.6K

You might also read

Related Articles

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

Sort by
Same author

Hydrodynamic Interactions Destroy Motility-Induced Phase Separation in Active Suspensions.

Physical review letters·2026
Same author

Efficient pheromone navigation via antagonistic detectors in Caenorhabditis elegans male.

Nature communications·2026
Same author

Nonmonotonic Diffusion in Sheared Active Suspensions of Squirmers.

Physical review letters·2025
Same author

Efficient pheromone navigation via antagonistic detectors.

bioRxiv : the preprint server for biology·2025
Same author

Active doping controls the mode of failure in dense colloidal gels.

Proceedings of the National Academy of Sciences of the United States of America·2024
Same author

Alabama's attack on DEI hinders STEM teaching.

Science (New York, N.Y.)·2024
Same journal

Nanopore sequencing with proteins: synchronization and dischronization of molecular dynamics simulations with laboratory and industrial developments.

Soft matter·2026
Same journal

Catanionics from biosurfactants and regular surfactants: miscibility and structure.

Soft matter·2026
Same journal

Adhesives with a thickness smaller than the fractocohesive length enhance adhesion.

Soft matter·2026
Same journal

Non-equilibrium phase transitions in hybrid Voronoi models of cell colonies.

Soft matter·2026
Same journal

Effects of methoxy substituents on self-assembly and gelation performance of benzamide-based organogelators.

Soft matter·2026
Same journal

Rheology of <i>Escherichia coli</i> suspensions with various bacterial morphologies and motion characteristics.

Soft matter·2026
See all related articles

Related Experiment Video

Updated: Feb 11, 2026

A Swimming-Induced Zebrafish Exercise Apparatus for Versatile Training Approaches
10:34

A Swimming-Induced Zebrafish Exercise Apparatus for Versatile Training Approaches

Published on: October 18, 2024

1.9K

Do hydrodynamic interactions affect the swim pressure?

Eric W Burkholder1, John F Brady

  • 1Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, USA. jfbrady@caltech.edu.

Soft Matter
|April 24, 2018
PubMed
Summary
This summary is machine-generated.

Active Brownian particles (ABPs) exert pressure on boundaries due to fluid momentum conservation. Hydrodynamic interactions modify this wall pressure, especially at small gaps.

More Related Videos

The Mouse Forced Swim Test
06:19

The Mouse Forced Swim Test

Published on: January 29, 2012

107.8K
Swimming Performance Assessment in Fishes
05:12

Swimming Performance Assessment in Fishes

Published on: May 20, 2011

26.0K

Related Experiment Videos

Last Updated: Feb 11, 2026

A Swimming-Induced Zebrafish Exercise Apparatus for Versatile Training Approaches
10:34

A Swimming-Induced Zebrafish Exercise Apparatus for Versatile Training Approaches

Published on: October 18, 2024

1.9K
The Mouse Forced Swim Test
06:19

The Mouse Forced Swim Test

Published on: January 29, 2012

107.8K
Swimming Performance Assessment in Fishes
05:12

Swimming Performance Assessment in Fishes

Published on: May 20, 2011

26.0K

Area of Science:

  • Soft Matter Physics
  • Fluid Dynamics
  • Statistical Mechanics

Background:

  • Active Brownian particles (ABPs) are model systems for self-propelled objects.
  • Understanding particle-boundary interactions is crucial in active matter systems.
  • Bulk mechanical pressure in fluid-particle mixtures includes contributions from both fluid and particles.

Purpose of the Study:

  • To investigate the force exerted by active Brownian particles on a confining boundary.
  • To analyze the influence of hydrodynamic interactions on the particle pressure at the wall.
  • To derive a general expression for the wall pressure applicable to both active and passive particles.

Main Methods:

  • Theoretical analysis of particle motion near a boundary.
  • Application of momentum conservation principles in a fluid.
  • Derivation of the particle pressure at the wall, considering hydrodynamic interactions.

Main Results:

  • The average force per unit area on the boundary equals the bulk mechanical pressure (P∞ = p∞f + Π∞).
  • This pressure relation holds true for both active and passive particles, irrespective of boundary interaction details.
  • Hydrodynamic interactions modify the wall pressure, yielding Πwall = n∞(kBT + ζ(Δ)U0l(Δ)/6) for a minimum gap Δ.

Conclusions:

  • The study provides a fundamental understanding of pressure in active matter systems near boundaries.
  • Hydrodynamic interactions play a significant role in determining the effective pressure exerted by active particles.
  • The derived formula for wall pressure reduces to the known swim pressure in the limit of large separation from the wall.