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

Cooperative Allosteric Transitions01:58

Cooperative Allosteric Transitions

8.9K
Cooperative allosteric transitions can occur in multimeric proteins, where each subunit of the protein has its own ligand-binding site. When a ligand binds to any of these subunits, it triggers a conformational change that affects the binding sites in the other subunits; this can change the affinity of the other sites for their respective ligands. The ability of the protein to change the shape of its binding site is attributed to the presence of a mix of flexible and stable segments in the...
8.9K
Cooperative Allosteric Transitions01:58

Cooperative Allosteric Transitions

3.1K
3.1K
Cooperative Allosteric Transitions01:58

Cooperative Allosteric Transitions

2.7K
2.7K
Cooperative Binding of Transcription Regulators02:13

Cooperative Binding of Transcription Regulators

7.4K
Transcriptional regulators bind to specific cis-regulatory sequences in the DNA to regulate gene transcription. These cis-regulatory sequences are very short, usually less than ten nucleotide pairs in length. The short length means that there is a high probability of the exact same sequence randomly occurring throughout the genome.  Since regulators can also bind to groups of similar sequences, this further increases the chances of random binding. Transcriptional regulators form...
7.4K
Plasticity00:58

Plasticity

3.1K
Plasticity is the property where an object loses its elasticity and undergoes irreversible deformation, even after the deformation forces are eliminated. If a material deforms irreversibly without increasing stress or load, then this is called ideal plasticity. For example, when a force is applied to an aluminum rod, it changes its shape, but it does not return to its original shape once the force is removed. Plastic deformation or ductility is thus a permanent deformation or change in the...
3.1K
Plasticizers01:31

Plasticizers

375
Water-reducers, or plasticizers, are chemical admixtures used in concrete to improve strength and workability. These additives reduce the water-cement ratio without compromising workability, lower the cement content while maintaining the same workability, or increase workability to assist concrete placement in inaccessible areas.
Plasticizers function by using surface-active agents to create repulsive electrostatic forces between cement particles. This dispersion enhances the concrete's...
375

You might also read

Related Articles

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

Sort by
Same author

Dynamic Personality of Proteins and Effect of the Molecular Environment.

The journal of physical chemistry letters·2024
Same author

Impact of Surface States in Graphene/<i>p</i>-Si Schottky Diodes.

Materials (Basel, Switzerland)·2024
Same author

Pressure Scanning Volumetry of Physically Aged Polymer Glasses, Fictive Pressure, and Memory Effect.

The journal of physical chemistry. B·2023
Same author

Dielectric Characterization of Core-Shell Structured Poly(vinylidene fluoride)-<i>grafted</i>-BaTiO<sub>3</sub> Nanocomposites.

Polymers·2023
Same author

Endothermic Effects on Heating Physically Aged Sucrose Glasses and the Clausius Theorem Violation in Glass Thermodynamics.

The journal of physical chemistry. B·2020
Same author

Complex Phase Behavior of GUVs Containing Different Sphingomyelins.

Biophysical journal·2019

Related Experiment Video

Updated: Feb 10, 2026

Author Spotlight: High-Throughput Screening to Obtain Crystal Hits for Protein Crystallography
06:19

Author Spotlight: High-Throughput Screening to Obtain Crystal Hits for Protein Crystallography

Published on: March 10, 2023

5.7K

Cooperativity in plastic crystals.

Marco Pieruccini1, Elpidio Tombari2

  • 1CNR, Istituto Nanoscienze, v. Campi 213/A, 41125 Modena, Italy.

Physical Review. E
|May 20, 2018
PubMed
Summary
This summary is machine-generated.

This study rederives a statistical mechanical model for α-relaxation in glass formers, analyzing cooperativity in disordered crystals using energy landscape concepts and dielectric or calorimetric data.

More Related Videos

Extraction of Organochlorine Pesticides from Plastic Pellets and Plastic Type Analysis
10:12

Extraction of Organochlorine Pesticides from Plastic Pellets and Plastic Type Analysis

Published on: July 1, 2017

12.2K
Synthesis of Biocompatible Liquid Crystal Elastomer Foams as Cell Scaffolds for 3D Spatial Cell Cultures
13:38

Synthesis of Biocompatible Liquid Crystal Elastomer Foams as Cell Scaffolds for 3D Spatial Cell Cultures

Published on: April 11, 2017

10.1K

Related Experiment Videos

Last Updated: Feb 10, 2026

Author Spotlight: High-Throughput Screening to Obtain Crystal Hits for Protein Crystallography
06:19

Author Spotlight: High-Throughput Screening to Obtain Crystal Hits for Protein Crystallography

Published on: March 10, 2023

5.7K
Extraction of Organochlorine Pesticides from Plastic Pellets and Plastic Type Analysis
10:12

Extraction of Organochlorine Pesticides from Plastic Pellets and Plastic Type Analysis

Published on: July 1, 2017

12.2K
Synthesis of Biocompatible Liquid Crystal Elastomer Foams as Cell Scaffolds for 3D Spatial Cell Cultures
13:38

Synthesis of Biocompatible Liquid Crystal Elastomer Foams as Cell Scaffolds for 3D Spatial Cell Cultures

Published on: April 11, 2017

10.1K

Area of Science:

  • Statistical mechanics
  • Condensed matter physics
  • Materials science

Background:

  • Structural glass formers exhibit complex relaxation dynamics (α-relaxation).
  • Understanding cooperativity is crucial for characterizing glassy states.
  • Previous models exist but a unified framework is needed.

Purpose of the Study:

  • To rederive a statistical mechanical model for α-relaxation within a general theoretical framework.
  • To analyze the interplay between nonexponentiality and cooperativity using energy landscape concepts.
  • To estimate cooperativity in orientationally disordered crystals.

Main Methods:

  • Rederivation of a statistical mechanical model.
  • Application of energy landscape concepts.
  • Analysis of literature data on linear dielectric response.
  • Analysis of enthalpy relaxation function from temperature-modulated calorimetry.
  • Consideration of specific heat step at glass transition.

Main Results:

  • The model successfully estimates cooperativity in orientationally disordered crystals.
  • Higher cooperativities are observed in systems with hydrogen bonding.
  • Deviations from equilibrium during rearrangement processes are accounted for.

Conclusions:

  • The generalized framework provides insights into α-relaxation and cooperativity.
  • The method is applicable to various disordered systems, including plastic crystals.
  • Hydrogen bonding significantly influences cooperativity in these materials.