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

Assembly of Complex Microtubule Structures01:32

Assembly of Complex Microtubule Structures

2.5K
Complex microtubule structures are present in resting cells and in dividing cells. In resting cells, they are responsible for maintaining the cellular architecture, tracks for intracellular transport, positioning of organelles, assembly of cilia and flagella. They mediate the bipolar spindle assembly for chromosomal segregation and positioning of the cell division plate in dividing cells. The formation of microtubule complex structures depends on the cell type, cell stage, and cell function.
2.5K
Resultant of a General Distributed Loading01:13

Resultant of a General Distributed Loading

1.1K
While designing structures exposed to non-uniform loads, it is crucial to consider the resultant force and its location. This resultant force is a single vector representing the net force applied due to the distributed load.
Examples such as load distribution due to wind and load distribution on a bridge illustrate how this concept is used to analyze and design safe, reliable structures under variable loading conditions. Most structures, such as residential buildings, bridges, and towers, are...
1.1K
Resultant Moment: Scalar Formulation01:31

Resultant Moment: Scalar Formulation

2.4K
When multiple forces act on an object in two-dimensional space, the concept of the net moment can be used to understand the tendency of these forces to induce rotational motion about a fixed point. The scalar formulation of the resultant moment is a helpful tool in analyzing the equilibrium of structures subjected to multiple forces.
To determine the resultant moment, the moments caused by all the forces in a system in the x-y plane are considered. Positive moments are typically...
2.4K
Kinetic Energy00:23

Kinetic Energy

43.7K
Kinetic energy is the ability of an object in motion to do work or enact change. It can take on many forms. For instance, water flowing down a waterfall has kinetic energy. In biological systems, particles of light travel and are absorbed by plants to create chemical energy. Animals consume the chemical energy and give off molecules that carry their scent through the air. They also generate kinetic energy when they run away from predators. Entire systems also possess kinetic energy, like the...
43.7K
Enzyme Kinetics01:19

Enzyme Kinetics

104.4K
Enzymes speed up reactions by lowering the activation energy of the reactants. The speed at which the enzyme turns reactants into products is called the rate of reaction. Several factors impact the rate of reaction, including the number of available reactants. Enzyme kinetics is the study of how an enzyme changes the rate of a reaction.
Scientists typically study enzyme kinetics with a fixed amount of enzyme in the controlled environment of a test tube. When more reactant, or substrate, is...
104.4K
Kinetic Molecular Theory: Molecular Velocities, Temperature, and Kinetic Energy03:07

Kinetic Molecular Theory: Molecular Velocities, Temperature, and Kinetic Energy

30.0K
The kinetic molecular theory qualitatively explains the behaviors described by the various gas laws. The postulates of this theory may be applied in a more quantitative fashion to derive these individual laws.
30.0K

You might also read

Related Articles

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

Sort by
Same author

Scanning tunneling microscopy of ferrocenecarboxylic acid assemblies on Ag(111): a comparison to Au(111).

Physical chemistry chemical physics : PCCP·2026
Same author

Inhibited Hydrolysis of 4-(<i>N</i>,<i>N</i>-Dimethylamino)aryl Imines in a Weak Acid by Supramolecular Encapsulation inside Cucurbit[7]uril.

The Journal of organic chemistry·2025
Same author

Water Transport Dynamics and Kinetic Equilibria in Nanoblisters at the Graphene-Mica Interface.

Langmuir : the ACS journal of surfaces and colloids·2025
Same author

Enantiopure molecules form apparently racemic monolayers of chiral cyclic pentamers.

Physical chemistry chemical physics : PCCP·2024
Same author

Mechanism of Daunomycin Intercalation into DNA from Enhanced Sampling Simulations.

The journal of physical chemistry letters·2024
Same author

The Energetic Landscape of Catch Bonds in TCR Interfaces.

Journal of immunology (Baltimore, Md. : 1950)·2023

Related Experiment Video

Updated: Feb 15, 2026

Formation of Ordered Biomolecular Structures by the Self-assembly of Short Peptides
07:26

Formation of Ordered Biomolecular Structures by the Self-assembly of Short Peptides

Published on: November 21, 2013

13.5K

Structural Polymorphism as the Result of Kinetically Controlled Self-Assembly.

Ryan D Brown1, Steven A Corcelli1, S Alex Kandel1

  • 1Department of Chemistry and Biochemistry, University of Notre Dame , Notre Dame, Indiana 46556, United States.

Accounts of Chemical Research
|January 31, 2018
PubMed
Summary

Nonequilibrium self-assembly can create novel metastable structures, including unique pentagonal clusters. This research reports the first hydrogen-bonded quasicrystal formed from cyclic pentamers and dimers.

More Related Videos

The Importance of Correct Protein Concentration for Kinetics and Affinity Determination in Structure-function Analysis
19:16

The Importance of Correct Protein Concentration for Kinetics and Affinity Determination in Structure-function Analysis

Published on: March 17, 2010

21.2K
Fabrication of Spherical and Worm-shaped Micellar Nanocrystals by Combining Electrospray, Self-assembly, and Solvent-based Structure Control
06:16

Fabrication of Spherical and Worm-shaped Micellar Nanocrystals by Combining Electrospray, Self-assembly, and Solvent-based Structure Control

Published on: February 11, 2018

20.4K

Related Experiment Videos

Last Updated: Feb 15, 2026

Formation of Ordered Biomolecular Structures by the Self-assembly of Short Peptides
07:26

Formation of Ordered Biomolecular Structures by the Self-assembly of Short Peptides

Published on: November 21, 2013

13.5K
The Importance of Correct Protein Concentration for Kinetics and Affinity Determination in Structure-function Analysis
19:16

The Importance of Correct Protein Concentration for Kinetics and Affinity Determination in Structure-function Analysis

Published on: March 17, 2010

21.2K
Fabrication of Spherical and Worm-shaped Micellar Nanocrystals by Combining Electrospray, Self-assembly, and Solvent-based Structure Control
06:16

Fabrication of Spherical and Worm-shaped Micellar Nanocrystals by Combining Electrospray, Self-assembly, and Solvent-based Structure Control

Published on: February 11, 2018

20.4K

Area of Science:

  • Supramolecular Chemistry
  • Materials Science
  • Crystallography

Background:

  • Traditional self-assembly aims for equilibrium structures.
  • Nonequilibrium conditions allow formation of metastable conformations.
  • Nonequilibrium cluster growth has implications for nucleation and mesoscale organization.

Purpose of the Study:

  • Investigate nonequilibrium self-assembly of organic and organometallic molecules.
  • Characterize novel metastable structures formed under rapid evaporation conditions.
  • Explore the formation of cyclic hydrogen-bonded clusters and their potential applications.

Main Methods:

  • Surface monolayer preparation via direct solution injection in high vacuum.
  • Rapid droplet evaporation to induce nonequilibrium growth.
  • Scanning tunneling microscopy for structural characterization.
  • Electronic structure calculations for stability analysis.

Main Results:

  • Observation of cyclic, hydrogen-bonded pentamers, uncommon in self-assembly.
  • Identification of pentagonal clusters in ferrocenecarboxylic acid, indole-2-carboxylic acid, and isatin.
  • Confirmation of pentamer stability over dimer/catemer conformations via calculations.
  • Discovery of the first hydrogen-bonded quasicrystal from self-assembled cyclic pentamers and dimers.

Conclusions:

  • Nonequilibrium conditions enable the formation of unusual metastable supramolecular structures.
  • Pentagonal clusters represent a general phenomenon for specific molecular designs.
  • The reported hydrogen-bonded quasicrystal arises from cocrystallization of pentamers and dimers.
  • Metastable clusters may form in solution prior to surface adsorption, impacting crystal growth theories.