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Related Concept Videos

Potential Due to a Polarized Object01:29

Potential Due to a Polarized Object

367
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,...
367
Dielectric Polarization in a Capacitor01:31

Dielectric Polarization in a Capacitor

4.6K
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...
4.6K
Induced Electric Dipoles01:28

Induced Electric Dipoles

4.2K
A permanent electric dipole orients itself along an external electric field. This rotation can be quantified by defining the potential energy because the external torque does work in rotating it. Then, the potential energy is minimum at the parallel configuration and maximum at the antiparallel configuration. While the former is a stable equilibrium, the latter is an unstable equilibrium.
Since the absolute value of potential energy holds no physical meaning, its zero value can be chosen as per...
4.2K
Group Polarization01:01

Group Polarization

34.2K
Group polarization is the strengthening of an original group attitude following the discussion of views within a group (Teger & Pruitt, 1967). That is, if a group initially favors a viewpoint, after discussion the group consensus is likely a stronger endorsement of the viewpoint. Conversely, if the group was initially opposed to a viewpoint, group discussion would likely lead to stronger opposition.
34.2K
Susceptibility, Permittivity and Dielectric Constant01:26

Susceptibility, Permittivity and Dielectric Constant

1.4K
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.
1.4K
Electric Dipoles and Dipole Moment01:30

Electric Dipoles and Dipole Moment

5.0K
Consider two charges of equal magnitude but opposite signs. If they cannot be separated by an external electric field, the system is called a permanent dipole. For example, the water molecule is a dipole, making it a good solvent.
Theoretically, studying electric dipoles leads to understanding why the resultant electric forces around us are weak. Since electric forces are strong, remnant net charges are rare. Hence, the interaction between dipoles helps us understand electrical interactions in...
5.0K

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Related Experiment Video

Updated: Jun 7, 2025

Merging Ion Concentration Polarization between Juxtaposed Ion Exchange Membranes to Block the Propagation of the Polarization Zone
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Merging Ion Concentration Polarization between Juxtaposed Ion Exchange Membranes to Block the Propagation of the Polarization Zone

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Polarization: A Universal Driving Force for Energy, Environment, and Electronics.

Xinwei Guan1,2, Zhihao Lei3, Ruichang Xue1,2

  • 1Centre for Atomaterials and Nanomanufacturing (CAN), School of Science, RMIT University, Melbourne, VIC, 3000, Australia.

Advanced Materials (Deerfield Beach, Fla.)
|November 18, 2024
PubMed
Summary

Harnessing material polarization, a quantum phenomenon, is key for sustainable energy, environmental, and electronic systems. This review explores polarization techniques and their applications in catalysis, energy storage, and solar cells.

Keywords:
catalysiselectronicsenergy storagepolarizationsolar cells

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The Preparation of Electrohydrodynamic Bridges from Polar Dielectric Liquids
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Area of Science:

  • Materials Science
  • Quantum Mechanics
  • Condensed Matter Physics

Background:

  • Sustainable future depends on integrated energy, environmental, and electronic systems.
  • Functional materials with controlled quantum mechanisms are foundational.
  • Charge distribution and behavior in materials dictate their properties.

Purpose of the Study:

  • To review polarization techniques and their applications.
  • To highlight the role of polarization in catalysis, energy storage, solar cells, and electronics.
  • To provide a roadmap for harnessing polarization for technological advancement.

Main Methods:

  • Examination of foundational polarization mechanisms (piezoelectric, ferroelectric, pyroelectric).
  • Inclusion of asymmetric phenomena generating internal fields (heterostructures, doping).
  • Analysis of polarization's role in charge separation, surface chemistry, and band alignment.

Main Results:

  • Polarization is a fundamental phenomenon for manipulating charge distribution.
  • Polarization significantly impacts material properties and functionalities.
  • Synergy between polarization and material properties overcomes technological limitations.

Conclusions:

  • Polarization is crucial for advancing energy, environmental, and electronic applications.
  • Understanding and controlling polarization unlocks new material functionalities.
  • This review offers a holistic approach to leveraging polarization for sustainable solutions.