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Related Concept Videos

Lattice Centering and Coordination Number02:33

Lattice Centering and Coordination Number

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The structure of a crystalline solid, whether a metal or not, is best described by considering its simplest repeating unit, which is referred to as its unit cell. The unit cell consists of lattice points that represent the locations of atoms or ions. The entire structure then consists of this unit cell repeating in three dimensions. The three different types of unit cells present in the cubic lattice are illustrated in Figure 1.
Types of Unit Cells
Imagine taking a large number of identical...
11.7K
Equipotential Surfaces and Field Lines01:29

Equipotential Surfaces and Field Lines

5.0K
Electric potential can be pictorially represented as a three-dimensional surface. On such a surface, the electric potential is constant everywhere. The equipotential surface is always perpendicular to the electric field lines, and while it is three-dimensional, it can be treated as an equipotential line in a two-dimensional case. These equipotential lines are also always perpendicular to electric field lines. The term equipotential is often used as a noun, referring to an equipotential line or...
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Electric Field at the Surface of a Conductor01:26

Electric Field at the Surface of a Conductor

5.4K
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.
In the 19th century, Michael Faraday conducted the famous ice pail experiment to prove that the charges always reside on the surface of a conductor. The experimental set-up consists of a conducting uncharged container mounted on an insulating stand. The outer surface of the container is...
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Trends in Lattice Energy: Ion Size and Charge02:54

Trends in Lattice Energy: Ion Size and Charge

26.8K
An ionic compound is stable because of the electrostatic attraction between its positive and negative ions. The lattice energy of a compound is a measure of the strength of this attraction. The lattice energy (ΔHlattice) of an ionic compound is defined as the energy required to separate one mole of the solid into its component gaseous ions. For the ionic solid sodium chloride, the lattice energy is the enthalpy change of the process:
26.8K
Bewley Lattice Diagram01:12

Bewley Lattice Diagram

1.5K
The Bewley lattice diagram, developed by L. V. Bewley, effectively organizes the reflections occurring during transmission-line transients. It visually represents how voltage waves propagate and reflect within a transmission line, making it easier to understand the complex interactions that occur.
1.5K
Surface Tension and Surface Energy01:16

Surface Tension and Surface Energy

3.3K
When a paint brush is immersed in water, the bristles wave freely inside the water. When it is taken out, the bristles stick together. The reason behind this effect is surface tension.
Consider a beaker filled with liquid. The bulk molecules in the liquid experience equal attractive forces on all sides with the surrounding molecules. However, the surface molecules experience a net attractive force downward due to the bulk molecules. The surface of the liquid behaves like a stretched membrane,...
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Related Experiment Video

Updated: Feb 7, 2026

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

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Coherence lattices in surface plasmon polariton fields.

Yahong Chen, Andreas Norrman, Sergey A Ponomarenko

    Optics Letters
    |July 14, 2018
    PubMed
    Summary

    We found that statistical similarity in random surface plasmon polariton (SPP) fields creates coherence lattices. Stronger correlations cause lattices to reappear in spectral density, useful for nanophotonics.

    Area of Science:

    • Optics and Photonics
    • Condensed Matter Physics
    • Nanotechnology

    Background:

    • Surface plasmon polaritons (SPPs) are electromagnetic waves coupled to electron oscillations at a metal-dielectric interface.
    • Polychromatic SPP fields involve multiple wavelengths, leading to complex electromagnetic interactions.
    • Understanding coherence in these fields is crucial for advanced optical applications.

    Purpose of the Study:

    • To investigate the formation and properties of electromagnetic coherence lattices in planar polychromatic SPP fields.
    • To explore the relationship between SPP field correlations and the emergence of lattice structures.
    • To examine the polarization states within these structured SPP fields.

    Main Methods:

    • Analysis of electromagnetic coherence in polychromatic SPP fields.

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  • Investigating the transition from uncorrelated to correlated SPP constituents.
  • Characterizing lattice structures in both coherence and spectral density domains.
  • Studying polarization properties of the resulting fields.

    • Main Results:

    • Coherence lattices arise from statistical similarity in uncorrelated SPP fields.
    • As correlations increase, coherence lattices diminish but reappear in the spectral density.
    • The study characterizes the polarization states of these structured SPP fields.
    • Demonstrated controllable plasmonic coherence and spectral density lattices.

    Conclusions:

    • Coherence lattices in SPP fields are governed by statistical properties and correlation strength.
    • Spectral density offers an alternative route to lattice formation in correlated fields.
    • These findings pave the way for applications in nanophotonics, including precise nanoparticle manipulation.