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

Multi-Step Reactions02:31

Multi-Step Reactions

7.3K
Chemical reactions often occur in a stepwise fashion involving two or more distinct reactions taking place in a sequence. A balanced equation indicates the reacting species and the product species, but it reveals no details about how the reaction occurs at the molecular level. The reaction mechanism (or reaction path) provides details regarding the precise, step-by-step process by which a reaction occurs. Each of the steps in a reaction mechanism is called an elementary reaction. These...
7.3K
Dynamic Equilibrium02:20

Dynamic Equilibrium

51.7K
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;...
51.7K
Le Chatelier's Principle: Changing Concentration02:27

Le Chatelier's Principle: Changing Concentration

58.6K
A system at equilibrium is in a state of dynamic balance, with forward and reverse reactions taking place at equal rates. If an equilibrium system is subjected to a change in conditions that affects these reaction rates differently (a stress), then the rates are no longer equal and the system is not at equilibrium. The system will subsequently experience a net reaction in the direction of a greater rate (a shift) that will re-establish the equilibrium. This phenomenon is summarized by Le...
58.6K
Predicting Reaction Outcomes02:24

Predicting Reaction Outcomes

8.5K
Kinetics describes the rate and path by which a reaction occurs. In contrast, thermodynamics deals with state functions and describes the properties, behavior, and components of a system. It is not concerned with the path taken by the process and cannot address the rate at which a reaction occurs. Although it does provide information about what can happen during a reaction process, it does not describe the detailed steps of what appears on an atomic or a molecular level. On the other hand,...
8.5K
Temperature Dependence on Reaction Rate02:55

Temperature Dependence on Reaction Rate

81.8K
The Collision Theory
Atoms, molecules, or ions must collide before they can react with each other. Atoms must be close together to form chemical bonds. This premise is the basis for a theory that explains many observations regarding chemical kinetics, including factors affecting reaction rates.
The collision theory is based on the postulates that (i) the reaction rate is proportional to the rate of reactant collisions, (ii) the reacting species collide in an orientation allowing contact between...
81.8K
Rate-Determining Steps03:08

Rate-Determining Steps

32.5K
Relating Reaction Mechanisms
In a multistep reaction mechanism, one of the elementary steps progresses significantly slower than the others. This slowest step is called the rate-limiting step (or rate-determining step). A reaction cannot proceed faster than its slowest step, and hence, the rate-determining step limits the overall reaction rate.
The concept of rate-determining step can be understood from the analogy of a 4-lane freeway with a short-stretch of traffic-bottleneck caused due to...
32.5K

You might also read

Related Articles

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

Sort by
Same author

Evidence-Based Clinical Recommendations for the Appropriate Use of Diagnostic Tests in Pediatric Allergology: Focus on Asthma, Rhinoconjunctivitis, and Keratoconjunctivitis Vernal.

Journal of clinical medicine·2026
Same author

Integrated covariances as excess observables weighted by currents and activities.

Physical review. E·2026
Same author

Estimating the Post-Mortem Interval Under Extreme Heat Environments: A Climate-Adaptive Case Series Based on Artificial Intelligence-Supported Diagnostics.

Diagnostics (Basel, Switzerland)·2026
Same author

Generative artificial intelligence in forensic medicine: a pilot study on AI-simulated medico-legal reports in healthcare liability cases.

International journal of legal medicine·2026
Same author

Synchronization of thermodynamically consistent stochastic phase oscillators.

Physical review. E·2026
Same author

Nonequilibrium fluctuation-response relations for state-current correlations.

Physical review. E·2026
Same journal

Erratum: Bacterial Turbulence at Compressible Fluid Interfaces [Phys. Rev. Lett. 136, 138301 (2026)].

Physical review letters·2026
Same journal

Unveiling Light-Quark Yukawa Flavor Structure via Dihadron Fragmentation at Lepton Colliders.

Physical review letters·2026
Same journal

Adaptable Route to Fast Coherent State Transport via Bang-Bang-Bang Protocols.

Physical review letters·2026
Same journal

Topological Transition and Emergence of Elasticity of Dislocation in Skyrmion Lattice: Beyond Kittel's Magnetic-Polar Analogy.

Physical review letters·2026
Same journal

Pound-Drever-Hall Method for Superconducting-Qubit Readout.

Physical review letters·2026
Same journal

Coupling a ^{73}Ge Nuclear Spin to an Electrostatically Defined Quantum Dot in Silicon.

Physical review letters·2026
See all related articles

Related Experiment Video

Updated: Jul 13, 2025

Magnetically Induced Rotating Rayleigh-Taylor Instability
06:42

Magnetically Induced Rotating Rayleigh-Taylor Instability

Published on: March 3, 2017

9.6K

Nonideal Reaction-Diffusion Systems: Multiple Routes to Instability.

Timur Aslyamov1, Francesco Avanzini1,2, Étienne Fodor1

  • 1Department of Physics and Materials Science, University of Luxembourg, L-1511 Luxembourg City, Luxembourg.

Physical Review Letters
|October 13, 2023
PubMed
Summary
This summary is machine-generated.

We classify instabilities in reaction-diffusion systems, identifying two main types: energetic interactions (E-type) and out-of-equilibrium reactions (R-type). This framework explains pattern formation in complex chemical systems.

More Related Videos

Image Processing Protocol for the Analysis of the Diffusion and Cluster Size of Membrane Receptors by Fluorescence Microscopy
12:15

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

Published on: April 9, 2019

8.8K
The Diffusion of Passive Tracers in Laminar Shear Flow
08:01

The Diffusion of Passive Tracers in Laminar Shear Flow

Published on: May 1, 2018

8.6K

Related Experiment Videos

Last Updated: Jul 13, 2025

Magnetically Induced Rotating Rayleigh-Taylor Instability
06:42

Magnetically Induced Rotating Rayleigh-Taylor Instability

Published on: March 3, 2017

9.6K
Image Processing Protocol for the Analysis of the Diffusion and Cluster Size of Membrane Receptors by Fluorescence Microscopy
12:15

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

Published on: April 9, 2019

8.8K
The Diffusion of Passive Tracers in Laminar Shear Flow
08:01

The Diffusion of Passive Tracers in Laminar Shear Flow

Published on: May 1, 2018

8.6K

Area of Science:

  • Chemical kinetics
  • Non-equilibrium thermodynamics
  • Pattern formation

Background:

  • Open reaction-diffusion systems exhibit complex spatial organization.
  • Understanding the origins of these patterns is crucial for various scientific fields.
  • Previous classifications were limited in scope.

Purpose of the Study:

  • To develop a general classification of instabilities driving spatial organization in open nonideal reaction-diffusion systems.
  • To analytically distinguish between energetic (E-type) and reaction-driven (R-type) instabilities.
  • To identify chemical reaction networks prone to specific instability types.

Main Methods:

  • Linear stability analysis was employed to classify instability types.
  • Analytical derivations were performed to categorize instabilities.
  • Numerical simulations were used to validate analytical findings on model systems.

Main Results:

  • Two primary types of instabilities were identified: E-type (energetic interactions) and R-type (multimolecular reactions).
  • A specific class of chemical reaction networks was found to exclusively exhibit E-type instabilities.
  • Numerical simulations confirmed the distinct pattern-forming capabilities of E-type and R-type instabilities.

Conclusions:

  • The developed classification provides a comprehensive framework for understanding pattern formation in reaction-diffusion systems.
  • The distinction between E-type and R-type instabilities offers new insights into chemical system dynamics.
  • This work lays the foundation for designing and predicting spatial organization in nonideal chemical systems.