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Related Concept Videos

Electric Field of Parallel Conducting Plates01:16

Electric Field of Parallel Conducting Plates

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...
Plane Electromagnetic Waves I01:30

Plane Electromagnetic Waves I

The existence of combined electric and magnetic fields that propagate through space as electromagnetic (EM) waves is the most significant prediction of Maxwell's equations. As Maxwell's equations hold in free space, the predicted electromagnetic waves do not require a medium for their propagation. An EM wave comprises an electric field, defined as the force per charge on a stationary charge, and a magnetic field, which is the force per charge on a moving charge.
The EM field is assumed to be a...
The Electrical Double Layer01:30

The Electrical Double Layer

In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...
Gauss's Law: Planar Symmetry01:27

Gauss's Law: Planar Symmetry

A planar symmetry of charge density is obtained when charges are uniformly spread over a large flat surface. In planar symmetry, all points in a plane parallel to the plane of charge are identical with respect to the charges. Suppose the plane of the charge distribution is the xy-plane, and the electric field at a space point P with coordinates (x, y, z) is to be determined. Since the charge density is the same at all (x, y) - coordinates in the z = 0 plane, by symmetry, the electric field at P...
Electrostatic Boundary Conditions in Dielectrics01:27

Electrostatic Boundary Conditions in Dielectrics

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.
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Electric Field at the Surface of a Conductor01:26

Electric Field at the Surface of a Conductor

Consider a conductor in electrostatic equilibrium. The net electric field inside a conductor vanishes, and extra charges on the conductor reside on its outer surface, regardless of where they originate.
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Related Experiment Video

Updated: May 31, 2026

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires
09:00

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires

Published on: December 11, 2013

Transverse electric plasmons in bilayer graphene.

Marinko Jablan1, Hrvoje Buljan, Marin Soljačić

  • 1Department of Physics, University of Zagreb, Zagreb, Croatia.

Optics Express
|July 1, 2011
PubMed
Summary

We predict transverse electric (TE) plasmons in bilayer graphene, finding they are more localized than in monolayer graphene. This is due to bilayer graphene

Area of Science:

  • Condensed matter physics
  • Materials science
  • Nanophotonics

Background:

  • Plasmons are collective electron oscillations crucial for light-matter interactions.
  • Graphene exhibits unique electronic properties, making it a candidate for plasmonic applications.
  • Understanding plasmon behavior in multilayer graphene is key to advancing optoelectronic devices.

Purpose of the Study:

  • To predict and investigate the existence of transverse electric (TE) plasmons in bilayer graphene.
  • To compare the plasmonic properties of bilayer graphene with those of monolayer graphene.
  • To identify conditions for enhanced plasmon localization in bilayer graphene.

Main Methods:

  • Theoretical prediction of plasmon behavior.
  • Analysis of electronic band structure in bilayer graphene.

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Last Updated: May 31, 2026

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires
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Evaluating Plasmonic Transport in Current-carrying Silver Nanowires

Published on: December 11, 2013

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
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Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons

Published on: July 21, 2018

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  • Simulation of plasmon localization at specific frequencies and doping levels.

    • Main Results:

    • Existence of transverse electric (TE) plasmons predicted in bilayer graphene.
    • Significantly more pronounced plasmonic properties observed in bilayer compared to monolayer graphene.
    • High degree of plasmon localization achieved at frequencies below ħω = 0.4 eV for suitable doping.

    Conclusions:

    • Bilayer graphene supports strongly localized TE plasmons.
    • The unique band structure of bilayer graphene, with perfectly nested bands separated by ~0.4 eV, drives enhanced plasmonic behavior.
    • Bilayer graphene offers superior potential for nanoscale optical applications compared to monolayer graphene.