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

Dynamic Equilibrium

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;...

Microbial Mats

Microbial Mats

Microbial communities forming biofilms and mats represent complex, spatially structured ecosystems where metabolic processes are stratified according to light, oxygen, and nutrient gradients. Biofilms are initial colonization stages, only a few millimeters thick, while mature microbial mats can reach centimeter-scale thickness and display intricate vertical organization. Their structural and functional heterogeneity allows microorganisms to occupy distinct ecological niches within a few...

State Space Representation

State Space Representation

The frequency-domain technique, commonly used in analyzing and designing feedback control systems, is effective for linear, time-invariant systems. However, it falls short when dealing with nonlinear, time-varying, and multiple-input multiple-output systems. The time-domain or state-space approach addresses these limitations by utilizing state variables to construct simultaneous, first-order differential equations, known as state equations, for an nth-order system.
Consider an RLC circuit, a...

Second Law of Thermodynamics

Second Law of Thermodynamics

In the quest to identify a property that may reliably predict the spontaneity of a process, a promising candidate has been identified: entropy. Processes that involve an increase in entropy of the system (ΔS > 0) are very often spontaneous; however, examples to the contrary are plentiful. By expanding consideration of entropy changes to include the surroundings, a significant conclusion regarding the relation between this property and spontaneity may be reached. In thermodynamic models, the...

Transition State Theory

Transition State Theory

Transition-state theory, also known as activated-complex theory, provides a molecular-level explanation of reaction rates in both gas-phase and solution-phase reactions. It extends earlier kinetic models by considering the formation of a short-lived, high-energy configuration during a reaction.The progress of a chemical reaction can be represented using a reaction profile, which plots potential energy against the reaction coordinate. As two reactant molecules approach one another, their...

Spontaneity

Spontaneity

A spontaneous process is one that occurs naturally under certain conditions. A nonspontaneous process, on the other hand, will not take place unless it is “driven” by the continual input of energy from an external source. Processes have a natural tendency to occur in one direction under a given set of conditions. Water will naturally flow downhill (spontaneous process), but uphill flow (nonspontaneous process) requires outside intervention such as the use of a pump. Iron exposed to the earth’s...

You might also read

Related Articles

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

Sort by

Same author

Presentation of Meibomian Acini Compared to Dermal Papillae of the Eyelid Margin, Using Confocal Laser Scanning Microscopy and Corresponding Histology.

Klinische Monatsblatter fur Augenheilkunde·2024

Same author

Characterization of aluminum, aluminum oxide and titanium dioxide nanomaterials using a combination of methods for particle surface and size analysis.

RSC advances·2022

Same author

Structure and elasticity of composite nanoparticle/polymer nanoshells (hybridosomes®).

Soft matter·2017

Same author

Dynamic dielectric response of electrorheological fluids in drag flow.

Physical review. E, Statistical, nonlinear, and soft matter physics·2015

Same author

Linear and nonlinear magnetic properties of ferrofluids.

Physical review. E, Statistical, nonlinear, and soft matter physics·2015

Same author

Photocontrol of luminescent inorganic nanocrystals via an organic molecular switch.

Physical chemistry chemical physics : PCCP·2014

Search research articles

Related Experiment Video

Updated: Jul 19, 2026

Generating Controlled, Dynamic Chemical Landscapes to Study Microbial Behavior

Generating Controlled, Dynamic Chemical Landscapes to Study Microbial Behavior

Published on: January 31, 2020

Spatial bistability: a source of complex dynamics. From spatiotemporal reaction-diffusion patterns to chemomechanical

J Boissonade¹, P De Kepper, F Gauffre

¹Centre de Recherche Paul Pascal (CNRS), 115 av. Dr. A. Schweitzer, F-33600, Pessac, France.

Chaos (Woodbury, N.Y.)

|October 4, 2006

Summary

Reaction-diffusion systems in gels can create spatial bistability, leading to diverse patterns like pulses and oscillations. This phenomenon, coupled with gel responsiveness, generates complex chemomechanical structures.

More Related Videos

Chemotactic Response of Marine Micro-Organisms to Micro-Scale Nutrient Layers

Chemotactic Response of Marine Micro-Organisms to Micro-Scale Nutrient Layers

Published on: May 28, 2007

Probing Structural and Dynamic Properties of Trafficking Subcellular Nanostructures by Spatiotemporal Fluctuation Spectroscopy

Probing Structural and Dynamic Properties of Trafficking Subcellular Nanostructures by Spatiotemporal Fluctuation Spectroscopy

Published on: August 16, 2021

Related Experiment Videos

Last Updated: Jul 19, 2026

Generating Controlled, Dynamic Chemical Landscapes to Study Microbial Behavior

Generating Controlled, Dynamic Chemical Landscapes to Study Microbial Behavior

Published on: January 31, 2020

Chemotactic Response of Marine Micro-Organisms to Micro-Scale Nutrient Layers

Chemotactic Response of Marine Micro-Organisms to Micro-Scale Nutrient Layers

Published on: May 28, 2007

Probing Structural and Dynamic Properties of Trafficking Subcellular Nanostructures by Spatiotemporal Fluctuation Spectroscopy

Probing Structural and Dynamic Properties of Trafficking Subcellular Nanostructures by Spatiotemporal Fluctuation Spectroscopy

Published on: August 16, 2021

Area of Science:

Chemical kinetics
Reaction-diffusion systems
Soft matter physics

Background:

Reaction systems with slow induction followed by fast evolution can exhibit complex behaviors.
Spatial bistability, the coexistence of two stable states, is a key phenomenon in reaction-diffusion systems.
Gel reactors offer unique environments for studying reaction-diffusion phenomena due to confinement and diffusion gradients.

Purpose of the Study:

To demonstrate the generation of spatial bistability in thin gel reactors.
To explore the resulting reaction-diffusion instabilities and pattern formation.
To investigate the emergence of chemomechanical structures through coupled phenomena.

Main Methods:

Experimental studies using thin gel reactors with controlled diffusive feeding.
Theoretical modeling of reaction-diffusion systems exhibiting slow-fast dynamics.
Investigation of various chemical reactions to induce spatial bistability.

Main Results:

Spatial bistability was experimentally and theoretically confirmed in the studied gel reactors.
Diverse reaction-diffusion instabilities, including stationary pulses, labyrinthine patterns, and spatiotemporal oscillations, were generated.
Coupling spatial bistability with gel size responsiveness led to autonomous chemomechanical structures.

Conclusions:

Spatial bistability is a readily achievable phenomenon in specific reaction-diffusion gel systems.
This bistability serves as a foundation for various reaction-diffusion instabilities and pattern formations.
The interplay between chemical reactions, diffusion, and material properties can create complex autonomous spatiotemporal patterns.