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

690
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,...
690
Induced Electric Dipoles01:28

Induced Electric Dipoles

4.7K
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...
4.7K
Electric Field of Parallel Conducting Plates01:16

Electric Field of Parallel Conducting Plates

1.6K
Gauss' law relates the electric flux through a closed surface to the net charge enclosed by that surface. Gauss's law can be applied to find the electric field and the charge enclosed in a region depending on its charge distribution.
Consider a cross-section of a thin, infinite conducting plate having a positive charge. For such a large thin plate, as the thickness of the plate tends to zero, the positive charges lie on the plate's two large faces. Without an external electric field, the...
1.6K
π Electron Effects on Chemical Shift: Overview01:27

π Electron Effects on Chemical Shift: Overview

1.5K
An applied magnetic field causes loosely bound π-electrons in organic molecules to circulate, producing a local or induced diamagnetic field over a large spatial volume. As the molecules tumble in solution, the field generated by π-electrons in spherical substituents results in a zero net field. However, the net field generated by π-electrons in non-spherical substituents is not zero. The effect of this induced field depends on the orientation of the molecule with respect to B0,...
1.5K
Electrostatic Boundary Conditions in Dielectrics01:27

Electrostatic Boundary Conditions in Dielectrics

1.8K
When an electric field passes from one homogeneous medium to another, crossing the boundary between the two mediums imparts a discontinuity in the electric field. This results in electrostatic boundary conditions that depend on the type of mediums the field propagates through.
Consider a case where both the mediums across a boundary are two different dielectric materials. Recall that the electric field and electric displacement are proportional and related through the material's permittivity....
1.8K
π Electron Effects on Chemical Shift: Aromatic and Antiaromatic Compounds01:14

π Electron Effects on Chemical Shift: Aromatic and Antiaromatic Compounds

1.7K
In aromatic compounds, such as benzene, the circulation of (4n + 2) π-electrons sets up a diamagnetic or diatropic ring current around the perimeter of the molecule. This current induces a magnetic field that opposes the external field inside the ring and reinforces it on the outside. The protons in benzene are deshielded and exhibit high chemical shifts in the range 6.5–8.5 ppm. The shielding effect at the center of the ring is evident in complex aromatic molecules, such as...
1.7K

You might also read

Related Articles

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

Sort by
Same author

Early Diagnosis of Herpes Zoster Neuralgia: A Narrative Review.

Pain and therapy·2023
Same author

Dense-Packed RuO<sub>2</sub> Nanorods with In Situ Generated Metal Vacancies Loaded on SnO<sub>2</sub> Nanocubes for Proton Exchange Membrane Water Electrolyzer with Ultra-Low Noble Metal Loading.

Small (Weinheim an der Bergstrasse, Germany)·2023
Same author

Identification and Validation of Cyclin A2 and Cyclin E2 as Potential Biomarkers in Small Cell Lung Cancer.

Oncology research and treatment·2023
Same author

Metagenomic Next-Generation Sequencing Assists in the Diagnosis of Mediastinal <i>Aspergillus fumigatus</i> Abscess in an Immunocompetent Patient: A Case Report and Literature Review.

Infection and drug resistance·2023
Same author

Complete genomic analysis of rabbit rotavirus G3P[22] in China.

Archives of virology·2023
Same author

A novel reverse transcription recombinase polymerase amplification assay for rapid detection of GI.1 genotype of rabbit hemorrhagic disease virus.

Frontiers in veterinary science·2023

Related Experiment Video

Updated: Jan 2, 2026

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser
09:00

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser

Published on: June 28, 2018

10.4K

Anomalous Dirac Plasmons in 1D Topological Electrides.

Jianfeng Wang1, Xuelei Sui1,2, Shiwu Gao1

  • 1Beijing Computational Science Research Center, Beijing 100193, China.

Physical Review Letters
|December 7, 2019
PubMed
Summary

Researchers discovered a new type of Dirac plasmon (DP) in topological electrides. This anomalous DP shows stable, density-independent properties and tunable frequencies, paving the way for advanced optoelectronic devices.

More Related Videos

Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
10:35

Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials

Published on: September 26, 2014

12.7K
Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems
07:44

Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems

Published on: April 28, 2016

15.5K

Related Experiment Videos

Last Updated: Jan 2, 2026

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser
09:00

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser

Published on: June 28, 2018

10.4K
Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
10:35

Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials

Published on: September 26, 2014

12.7K
Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems
07:44

Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems

Published on: April 28, 2016

15.5K

Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Quantum Chemistry

Background:

  • Plasmons enable efficient light-matter coupling at subwavelength scales.
  • Conventional plasmons, including Dirac plasmons (DP) in graphene, suffer from density-dependent properties, limiting stability and low-frequency intensity.
  • These dependencies hinder stable plasmonic functionalities.

Purpose of the Study:

  • To demonstrate a novel type of Dirac plasmon (DP) with density-independent characteristics.
  • To predict the realization of anomalous Dirac plasmons (ADPs) in specific 1D topological electride materials.
  • To explore the potential of these ADPs for novel plasmonic and optoelectronic applications.

Main Methods:

  • First-principles calculations were employed to investigate the electronic and plasmonic properties of 1D topological electrides.
  • Theoretical analysis was performed to understand the emergence and behavior of the anomalous Dirac plasmon (ADP).
  • The study focused on materials like Ba_{3}CrN_{3} and Sr_{3}CrN_{3}.

Main Results:

  • A new type of DP emerging from a Dirac nodal-surface state was demonstrated, exhibiting density-independent frequency, intensity, and damping.
  • Anomalous Dirac plasmons (ADPs) were predicted in 1D topological electrides (Ba_{3}CrN_{3} and Sr_{3}CrN_{3}).
  • These ADPs possess density-independent frequency, high intensity, and tunable frequencies from THz to mid-infrared, with low damping due to weak electron-phonon coupling.

Conclusions:

  • The discovered anomalous Dirac plasmons (ADPs) offer stable and tunable plasmonic properties independent of carrier density.
  • 1D topological electrides are promising platforms for realizing these ADPs.
  • This work opens avenues for developing next-generation plasmonic and optoelectronic devices by integrating topological physics and electride materials.