Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Types Of Collisions - I

Types Of Collisions - I

When two objects come in direct contact with each other, it is called a collision. During a collision, two or more objects exert forces on each other in a relatively short amount of time. A collision can be categorized as either an elastic or inelastic collision. If two or more objects approach each other, collide and then bounce off, moving away from each other with the same relative speed at which they approached each other, the total kinetic energy of the system is said to be conserved. This...

Van der Waals Interactions

Van der Waals Interactions

Atoms and molecules interact with each other through intermolecular forces. These electrostatic forces arise from attractive or repulsive interactions between particles with permanent, partial, or temporary charges. The intermolecular forces between neutral atoms and molecules are ion–dipole, dipole–dipole, and dispersion forces, collectively known as van der Waals forces.

Elastic Collisions: Introduction

Elastic Collisions: Introduction

An elastic collision is one that conserves both internal kinetic energy and momentum. Internal kinetic energy is the sum of the kinetic energies of the objects in a system. Truly elastic collisions can only be achieved with subatomic particles, such as electrons striking nuclei. Macroscopic collisions can be very nearly, but not quite, elastic, as some kinetic energy is always converted into other forms of energy such as heat transfer due to friction and sound. An example of a nearly...

Collisions in Multiple Dimensions: Introduction

Collisions in Multiple Dimensions: Introduction

It is far more common for collisions to occur in two dimensions; that is, the initial velocity vectors are neither parallel nor antiparallel to each other. Let's see what complications arise from this. The first idea is that momentum is a vector. Like all vectors, it can be expressed as a sum of perpendicular components (usually, though not always, an x-component and a y-component, and a z-component if necessary). Thus, when the statement of conservation of momentum is written for a...

Behavior of Gas Molecules: Molecular Diffusion, Mean Free Path, and Effusion

Behavior of Gas Molecules: Molecular Diffusion, Mean Free Path, and Effusion

Although gaseous molecules travel at tremendous speeds (hundreds of meters per second), they collide with other gaseous molecules and travel in many different directions before reaching the desired target. At room temperature, a gaseous molecule will experience billions of collisions per second. The mean free path is the average distance a molecule travels between collisions. The mean free path increases with decreasing pressure; in general, the mean free path for a gaseous molecule will be...

Diffusion

Diffusion

Diffusion is a type of passive transport. In passive transport, a substance tends to move from an area of high concentration to an area of low concentration until the concentration is equal across the space. For example, take the diffusion of substances through the air. When someone opens a perfume bottle in a room filled with people, the perfume is at its highest concentration in the bottle and is at its lowest at the edges of the room. The perfume vapor will diffuse, or spread away, from the...

You might also read

Related Articles

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

Sort by

Same author

PCSK9 inhibition and cardiovascular outcomes by heart failure status: a pooled analysis of SPIRE-1 and SPIRE-2.

European journal of heart failure·2026

Same author

In Case You Missed It! European Society of Cardiology Heart Failure Association Congress 2026.

Journal of cardiac failure·2026

Same author

Mechanosensing by T cells promotes a tissue-resident memory transcriptional program.

Nature immunology·2026

Same author

Advancements in wearable technology for heart failure patients.

Current opinion in cardiology·2026

Same author

Cystatin-C Versus Creatinine and Kidney Function in Heart Failure With Preserved Ejection Fraction: A SOGALDI-PEF Analysis.

The American journal of cardiology·2026

Same author

Correction: Description of new species of <i>Mycobacterium terrae</i> complex isolated from sewage at the São Paulo zoological park foundation in Brazil.

Frontiers in microbiology·2026

Search research articles

Related Experiment Video

Updated: Aug 29, 2025

Laboratory Drop Towers for the Experimental Simulation of Dust-aggregate Collisions in the Early Solar System

Laboratory Drop Towers for the Experimental Simulation of Dust-aggregate Collisions in the Early Solar System

Published on: June 5, 2014

Collisions Enhance Self-Diffusion in Odd-Diffusive Systems.

Erik Kalz^1,2, Hidde Derk Vuijk¹, Iman Abdoli¹

¹Leibniz-Institut für Polymerforschung Dresden, Institut Theorie der Polymere, 01069 Dresden, Deutschland.

Physical Review Letters

|September 9, 2022

Summary

Collisions in odd-diffusive systems unexpectedly enhance particle self-diffusion. This counterintuitive effect, driven by a mutual rolling motion, is analytically predicted and confirmed by simulations.

More Related Videos

The Diffusion of Passive Tracers in Laminar Shear Flow

The Diffusion of Passive Tracers in Laminar Shear Flow

Published on: May 1, 2018

Image Processing Protocol for the Analysis of the Diffusion and Cluster Size of Membrane Receptors by Fluorescence Microscopy

Image Processing Protocol for the Analysis of the Diffusion and Cluster Size of Membrane Receptors by Fluorescence Microscopy

Published on: April 9, 2019

Related Experiment Videos

Last Updated: Aug 29, 2025

Laboratory Drop Towers for the Experimental Simulation of Dust-aggregate Collisions in the Early Solar System

Laboratory Drop Towers for the Experimental Simulation of Dust-aggregate Collisions in the Early Solar System

Published on: June 5, 2014

The Diffusion of Passive Tracers in Laminar Shear Flow

The Diffusion of Passive Tracers in Laminar Shear Flow

Published on: May 1, 2018

Image Processing Protocol for the Analysis of the Diffusion and Cluster Size of Membrane Receptors by Fluorescence Microscopy

Image Processing Protocol for the Analysis of the Diffusion and Cluster Size of Membrane Receptors by Fluorescence Microscopy

Published on: April 9, 2019

Area of Science:

Physics
Statistical Mechanics
Condensed Matter Physics

Background:

Particle collisions typically decrease self-diffusion coefficients.
Odd-diffusive systems exhibit diffusion tensors with antisymmetric elements.

Purpose of the Study:

To investigate the effect of particle collisions on self-diffusion in odd-diffusive systems.
To demonstrate that collisions can enhance self-diffusion in these systems.

Main Methods:

Development of a geometric model for analytical prediction.
Analytical derivation of self-diffusion coefficient enhancement with density.
Validation using many-body Brownian dynamics simulations.
Focus on Brownian particles under Lorentz force as an archetypal system.

Main Results:

Demonstrated that particle collisions can enhance self-diffusion in odd-diffusive systems.
Identified an inherent curving and mutual rolling effect facilitating particle motion.
Analytically predicted self-diffusion enhancement with increasing particle density.
Confirmed the counterintuitive behavior through simulations.

Conclusions:

Collisions in odd-diffusive systems can lead to enhanced self-diffusion, contrary to general belief.
The observed phenomenon is attributed to a unique mutual rolling effect.
Findings are robustly supported by both theoretical modeling and numerical simulations.