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

Potential Due to a Polarized Object01:29

Potential Due to a Polarized Object

815
A neutral atom consists of a positively charged nucleus surrounded by a negatively charged electron cloud. When placed in an external electric field, the external electric force pulls the electrons and nucleus apart, opposite to the intrinsic attraction between the nucleus and the electrons. The opposing forces balance each other with a slight shift between the center of masses of the nucleus and the electron cloud, resulting in a polarized atom. On the other hand, a few molecules, like water,...
815
Dielectric Polarization in a Capacitor01:31

Dielectric Polarization in a Capacitor

6.1K
The presence of a dielectric medium in a capacitor not only changes the voltage and capacitance but also affects the electric field. In general, dielectrics can be of two types: polar and nonpolar. In a polar dielectric, the positive and negative charges in the molecules are separated by a distance and hence have a permanent dipole moment. In contrast, no such charge separation exists in a nonpolar dielectric, however the nonpolar molecules get polarized in the presence of an external electric...
6.1K
Susceptibility, Permittivity and Dielectric Constant01:26

Susceptibility, Permittivity and Dielectric Constant

3.1K
When placed in an external electric field, a dielectric material gets polarized. The charge density in the dielectric material is given by the sum of the bound and free charge densities, while the total charge density can also be written in terms of the total electric field. The bound charge density can be measured in terms of polarization, leading to the relationship between electric displacement and polarization.
3.1K
Polar Covalent Bonds02:24

Polar Covalent Bonds

30.3K
Covalent bonds are formed between two atoms when both have similar tendencies to attract electrons to themselves (i.e., when both atoms have identical or fairly similar ionization energies and electron affinities). Nonmetal atoms frequently form covalent bonds with other nonmetal atoms. For example, the hydrogen molecule, H2, contains a covalent bond between its two hydrogen atoms. When two separate hydrogen atoms with a particular potential energy approach each other, their valence orbitals...
30.3K
Bond Polarity, Dipole Moment, and Percent Ionic Character02:48

Bond Polarity, Dipole Moment, and Percent Ionic Character

35.9K
Bond Polarity
35.9K
Molecular Shape and Polarity03:37

Molecular Shape and Polarity

76.2K
Dipole Moment of a Molecule
76.2K

You might also read

Related Articles

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

Sort by
Same author

Onsager's real cavity model near solid interfaces.

The Journal of chemical physics·2026
Same author

Amyloid in Primary Hip Arthroplasty Specimens: An Opportunity for Early Detection of Amyloidosis?

The Journal of arthroplasty·2026
Same author

Optimizing the Disinfection of Devitalized Bone for Retained Use in Open Fractures: An in vitro Study.

Journal of orthopaedic trauma·2026
Same author

Mechanistic Insights into Protein Corona Formation: The Surface Charge of Mesoporous Silica Nanoparticles Determines the Orientation and the Conformation of Adsorbed BSA Protein.

Langmuir : the ACS journal of surfaces and colloids·2026
Same author

Correction: Attractive and repulsive terms in multi-filament dispersion interactions.

Physical chemistry chemical physics : PCCP·2026
Same author

Correction to "Exploring Wettability of Liquid Iron on Refractory Oxides with the Sessile Drop Technique and Density Functional-Derived Hamaker Constants".

ACS applied materials & interfaces·2026
Same journal

Modeling the Clustering of Fumaric/Maleic Acid with Water and Na<sup>+</sup>, Cl<sup>-</sup> Ions.

The journal of physical chemistry. A·2026
Same journal

Determining Binding Energies of Key Fluorinated Refrigerants 1,1,1,2-Tetrafluoroethane, 2,3,3,3-Tetrafluoropropene, and 3,3,3-Trifluoropropene.

The journal of physical chemistry. A·2026
Same journal

Kinetic and Mechanistic Insights into H-Abstraction and Subsequent Isomerization and Decomposition of Monoglyme and Key Combustion Intermediates.

The journal of physical chemistry. A·2026
Same journal

First-Principles Analysis of Protonation-Induced Electronic Effects in Tetrakis(<i>p</i>-aminophenyl)porphyrin (TAPP).

The journal of physical chemistry. A·2026
Same journal

Exploring the Reactivity of the CH Radical toward Nitrous Oxide in the Context of the Interstellar Medium.

The journal of physical chemistry. A·2026
Same journal

Infrared Photodissociation Spectroscopy of Benzene-V<sup>+</sup>(CO)<sub>n</sub> "Piano Stool" Cations.

The journal of physical chemistry. A·2026
See all related articles

Related Experiment Video

Updated: Feb 17, 2026

Assembly and Characterization of Polyelectrolyte Complex Micelles
08:44

Assembly and Characterization of Polyelectrolyte Complex Micelles

Published on: March 2, 2020

11.6K

Effective Polarizability Models.

Johannes Fiedler1, Priyadarshini Thiyam2,3, Anurag Kurumbail4

  • 1Physikalisches Institut, Albert-Ludwigs-Universität Freiburg , Hermann-Herder-Strasse 3, 79104 Freiburg, Germany.

The Journal of Physical Chemistry. A
|November 30, 2017
PubMed
Summary
This summary is machine-generated.

We present theories for effective polarizability, using cavity and hard-sphere models. Density-functional simulations yield radii and polarizabilities, enabling calculations of van der Waals and Casimir-Polder interactions.

More Related Videos

Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids
08:04

Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids

Published on: May 27, 2020

9.0K
Author Spotlight: Non-Invasive Imaging of Complex Bio-Structures Using Polarization-Sensitive Two-Photon Microscopy
05:54

Author Spotlight: Non-Invasive Imaging of Complex Bio-Structures Using Polarization-Sensitive Two-Photon Microscopy

Published on: September 8, 2023

1.8K

Related Experiment Videos

Last Updated: Feb 17, 2026

Assembly and Characterization of Polyelectrolyte Complex Micelles
08:44

Assembly and Characterization of Polyelectrolyte Complex Micelles

Published on: March 2, 2020

11.6K
Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids
08:04

Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids

Published on: May 27, 2020

9.0K
Author Spotlight: Non-Invasive Imaging of Complex Bio-Structures Using Polarization-Sensitive Two-Photon Microscopy
05:54

Author Spotlight: Non-Invasive Imaging of Complex Bio-Structures Using Polarization-Sensitive Two-Photon Microscopy

Published on: September 8, 2023

1.8K

Area of Science:

  • Physics
  • Physical Chemistry
  • Computational Chemistry

Background:

  • Understanding the polarizability of small particles in a medium is crucial for accurately modeling intermolecular forces.
  • Existing models often simplify the particle-medium interaction, limiting their applicability to complex systems.

Purpose of the Study:

  • To develop and compare different theoretical models for the effective polarizability of a small particle within a surrounding medium.
  • To investigate the influence of various approximations (virtual cavity, real cavity, hard-sphere) on calculated polarizabilities.
  • To enable accurate calculations of macroscopic van der Waals and Casimir-Polder interactions.

Main Methods:

  • Implementation of virtual cavity, real cavity, and hard-sphere models for effective polarizability.
  • Utilizing density-functional simulations to determine particle and cavity radii.
  • Calculating effective polarizabilities at discrete Matsubara frequencies.

Main Results:

  • Comparison of polarizability predictions across different theoretical models.
  • Determination of hard-sphere and cavity radii from first-principles simulations.
  • Effective polarizabilities calculated at specific frequencies, suitable for macroscopic interaction studies.

Conclusions:

  • The presented models provide a framework for calculating effective polarizabilities with varying levels of approximation.
  • Density-functional simulations offer a pathway to obtain accurate parameters for these models.
  • The results facilitate improved calculations of van der Waals and Casimir-Polder interactions in condensed phases and with interfaces.