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

First Law: Particles in Two-dimensional Equilibrium01:18

First Law: Particles in Two-dimensional Equilibrium

6.7K
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...
6.7K
First Law: Particles in One-dimensional Equilibrium01:10

First Law: Particles in One-dimensional Equilibrium

7.2K
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...
7.2K
Dynamic Equilibrium02:20

Dynamic Equilibrium

56.7K
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;...
56.7K
Colloids and Suspensions01:17

Colloids and Suspensions

2.5K
Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles visible to the naked eye or seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. The suspended particles in a suspension settle out after some time of mixing. The separation of particles from a suspension is...
2.5K
Colloids03:22

Colloids

18.6K
Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...
18.6K
Equilibrium Conditions for a Particle01:23

Equilibrium Conditions for a Particle

1.6K
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...
1.6K

You might also read

Related Articles

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

Sort by
Same author

Resolving liquid-to-glass transitions of water under soft nanoconfinement.

Nature communications·2026
Same author

Energy landscape statistics and thermodynamics of a machine-learned model of water.

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

Collective filament wrapping and nested spiral formation in active polydisperse systems.

Soft matter·2026
Same author

Simulating plastic ice VII with the data-driven many-body MB-pol potential.

The Journal of chemical physics·2025
Same author

The Hitchhiker's guide to differential dynamic microscopy.

The Journal of chemical physics·2025
Same author

Inverse Thermodynamics: Designing Interactions for Targeted Phase Behavior.

The journal of physical chemistry. B·2025

Related Experiment Video

Updated: Oct 11, 2025

The Mechanics of Poro-Elastic Contractile Actomyosin Networks As a Model System of the Cell Cytoskeleton
08:50

The Mechanics of Poro-Elastic Contractile Actomyosin Networks As a Model System of the Cell Cytoskeleton

Published on: March 10, 2023

913

Spatially uniform dynamics in equilibrium colloidal gels.

Enrico Lattuada1, Debora Caprara1, Roberto Piazza2

  • 1Department of Physics, Sapienza University of Rome, Piazzale Aldo Moro 2, 00185 Roma, Italy.

Science Advances
|December 3, 2021
PubMed
Summary

DNA nanostar gels serve as model systems for colloidal gel physics. Equilibrium gels exhibit uniform dynamics and no aging, unlike phase separation gels.

More Related Videos

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

12.3K
Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions
11:38

Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions

Published on: April 19, 2018

8.1K

Related Experiment Videos

Last Updated: Oct 11, 2025

The Mechanics of Poro-Elastic Contractile Actomyosin Networks As a Model System of the Cell Cytoskeleton
08:50

The Mechanics of Poro-Elastic Contractile Actomyosin Networks As a Model System of the Cell Cytoskeleton

Published on: March 10, 2023

913
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

12.3K
Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions
11:38

Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions

Published on: April 19, 2018

8.1K

Area of Science:

  • Colloidal physics
  • Biomaterials science
  • Nanotechnology

Background:

  • DNA nanostars offer a tunable platform for creating colloidal gels.
  • Understanding gel formation dynamics is crucial for both materials science and biomedical applications.
  • Equilibrium and phase separation gels exhibit distinct properties.

Purpose of the Study:

  • To investigate the dynamics of gel formation in tetravalent DNA nanostar systems.
  • To compare the properties of equilibrium gels versus phase separation gels.
  • To utilize photon correlation imaging for space-resolved dynamics quantification.

Main Methods:

  • Dynamic light scattering (DLS) for probing particle dynamics.
  • Photon correlation imaging (PCI) for space-resolved quantification of dynamics.
  • System preparation with varying concentrations of tetravalent DNA nanostars.

Main Results:

  • Observed gel formation over 10 orders of magnitude in time.
  • Characterized distinct behaviors between equilibrium and phase separation gels.
  • Equilibrium gels demonstrated spatially uniform dynamics and absence of aging.
  • Phase separation gels exhibited heterogeneity in concentration and dynamics.

Conclusions:

  • DNA nanostar gels are suitable model systems for studying colloidal gel physics.
  • Equilibrium gels formed by DNA nanostars show predictable, non-aging dynamics.
  • The findings highlight the importance of concentration in determining gel formation pathways and properties.