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

Structure and Bonding of Alkenes02:47

Structure and Bonding of Alkenes

22.9K
Olefins, which are unsaturated hydrocarbons containing one or more carbon–carbon double bonds, are broadly divided into alkenes and cycloalkenes. The general chemical formula of an alkene is CnH2n.
Doubly bonded carbons are sp2 hybridized and have a trigonal planar geometry. The double bond is composed of a σ bond formed by the overlap of hybrid orbitals and a π bond produced by the lateral overlap of unhybridized 2p orbitals on both the carbons. Each carbon atom is...
22.9K
Conformations of Ethane and Propane02:18

Conformations of Ethane and Propane

19.0K
In an organic molecule, free rotation about the carbon-carbon single bond results in energetically different conformers of the molecule. Due to this rotation, called the internal rotation, ethane has two major conformations — staggered and eclipsed.
Staggered conformation is a low energy and more stable conformation with the C-H bonds on the front carbon placed at 60°dihedral angles relative to the C-H bonds on the back carbon, leading to a reduced torsional strain. In staggered...
19.0K
Intermolecular Forces and Physical Properties02:56

Intermolecular Forces and Physical Properties

29.6K
29.6K
Conformations of Butane02:20

Conformations of Butane

20.0K
Unlike ethane and propane that have only two major conformations, butane has more than two conformers. The staggered form of butane in which the bulky methyl groups on the two carbons are placed on opposite sides, that is, at a dihedral angle of 180°, is the lowest energy, most stable form — called the anti conformer. This conformation is stabilized due to the absence of steric repulsion between the largely spaced out methyl groups. The other two staggered conformations are...
20.0K
Conformations of Cycloalkanes02:29

Conformations of Cycloalkanes

16.2K
Adolf von Baeyer attempted to explain the instabilities of small and large cycloalkane rings using the concept of angle strain — the strain caused by the deviation of bond angles from the ideal 109.5° tetrahedral value for sp3  hybridized carbons. However, while cyclopropane and cyclobutane are strained, as expected from their highly compressed bond angles, cyclopentane is more strained than predicted, and cyclohexane is virtually strain-free. Hence, Baeyer’s theory that...
16.2K
Comparing Intermolecular Forces: Melting Point, Boiling Point, and Miscibility02:34

Comparing Intermolecular Forces: Melting Point, Boiling Point, and Miscibility

53.3K
Intermolecular forces are attractive forces that exist between molecules. They dictate several bulk properties, such as melting points, boiling points, and solubilities (miscibilities) of substances. Molar mass, molecular shape, and polarity affect the strength of different intermolecular forces, which influence the magnitude of physical properties across a family of molecules.
Temporary attractive forces like dispersion are present in all molecules, whether they are polar or nonpolar. They...
53.3K

You might also read

Related Articles

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

Sort by
Same author

Henagliflozin promotes mitophagy in renal tubular cells by activating AMPK/ULK1 to alleviate the progression of diabetic kidney disease.

Histology and histopathology·2026
Same author

<b>Erratum: HAIFENG HAN, XIAOJIN XUE, ZHISHENG ZHANG & CHEN SHAO (2026) Morphology and molecular phylogeny of a new ciliate, <i>Hemiurosomoida sinica</i> sp. nov. (Ciliophora, Hypotrichia). <i>Zootaxa</i>, 5750 (2): 241-250.</b>

Zootaxa·2026
Same author

<b>Morphology and molecular phylogeny of a new ciliate, <i>Hemiurosomoida sinica</i> sp. nov. (Ciliophora, Hypotrichia)</b>.

Zootaxa·2026
Same author

Beyond classification metrics: a psychometric-aware benchmark for data augmentation in imbalanced student mental health surveys.

Frontiers in digital health·2026
Same author

School and family based myopia education associations with myopia prevalence in Hefei high school students in the post-COVID-19 period.

Scientific reports·2026
Same author

Comparative genomics of parasitic and symbiotic microeukaryotes: Phylogenomic insights into lifestyle transitions and co-evolutionary dynamics.

Molecular phylogenetics and evolution·2026

Related Experiment Video

Updated: Mar 19, 2026

Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics
13:58

Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics

Published on: September 28, 2016

12.3K

Alkane-Metal Interfacial Structure and Elastic Properties by Molecular Dynamics Simulation.

Katherine Sebeck1, Chen Shao1, John Kieffer1

  • 1Department of Materials Science and Engineering, University of Michigan , 2300 Hayward Street, Ann Arbor, Michigan 48109, United States.

ACS Applied Materials & Interfaces
|June 11, 2016
PubMed
Summary

The structure of amorphous materials near interfaces is influenced by substrate properties and polymer chain length. Layering effects show a logarithmic dependence on interaction strength and substrate congruency.

Keywords:
alkaneelastic modulilayeringmolecular dynamics simulationsnano-confinement

More Related Videos

Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics
10:52

Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics

Published on: April 12, 2019

13.5K
Atomic Force Microscopy Cantilever-Based Nanoindentation: Mechanical Property Measurements at the Nanoscale in Air and Fluid
08:58

Atomic Force Microscopy Cantilever-Based Nanoindentation: Mechanical Property Measurements at the Nanoscale in Air and Fluid

Published on: December 2, 2022

3.9K

Related Experiment Videos

Last Updated: Mar 19, 2026

Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics
13:58

Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics

Published on: September 28, 2016

12.3K
Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics
10:52

Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics

Published on: April 12, 2019

13.5K
Atomic Force Microscopy Cantilever-Based Nanoindentation: Mechanical Property Measurements at the Nanoscale in Air and Fluid
08:58

Atomic Force Microscopy Cantilever-Based Nanoindentation: Mechanical Property Measurements at the Nanoscale in Air and Fluid

Published on: December 2, 2022

3.9K

Area of Science:

  • Materials Science
  • Computational Chemistry
  • Polymer Physics

Background:

  • Amorphous material structure near interfaces is influenced by substrate properties like lattice spacing, polymer chain length, and adhesive strength.
  • Understanding these interfacial effects is crucial for designing advanced materials with tailored properties.

Purpose of the Study:

  • To investigate the impact of substrate characteristics and polymer chain length on amorphous material structure at interfaces.
  • To quantify the relationship between interfacial interaction strength and polymer layering.
  • To analyze the mechanical properties of nanoconfined systems.

Main Methods:

  • Simulations of n-alkanes on four FCC metal lattices with varying chain lengths.
  • Control of van der Waals interactions using Lennard-Jones potential parameters.
  • Analysis of layering effects, maximum density, spatial extent, and elastic modulus.

Main Results:

  • A strong layering effect was observed in all simulated systems near the interface.
  • Polymer layering exhibited a logarithmic dependence on the interaction strength between polymer and substrate.
  • Substrate lattice parameter congruency enhanced the layering effect.
  • Ordering effects extended beyond the immediate interfacial region, influencing mechanical properties.

Conclusions:

  • Interfacial structure and properties of amorphous materials are significantly modulated by substrate characteristics and polymer chain length.
  • The interaction strength and substrate congruency are key factors governing polymer layering at interfaces.
  • The observed ordering effects have implications for the mechanical behavior of nanoconfined systems.