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Related Concept Videos

Standing Waves in a Cavity01:28

Standing Waves in a Cavity

A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
Double Resonance Techniques: Overview01:12

Double Resonance Techniques: Overview

Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
Spin decoupling is usually achieved by...
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The German physicist Heinrich Hertz (1857–1894) was the first to generate and detect certain types of electromagnetic waves in the laboratory. Starting in 1887, he performed a series of experiments that confirmed the existence of electromagnetic waves and verified that they travel at the speed of light. Hertz used an alternating-current RLC (resistor-inductor-capacitor) circuit that resonated at a known frequency and connected it to a loop of wire. High voltages induced across the gap in the...
Interaction of EM Radiation with Matter: Spectroscopy01:12

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Electromagnetic (EM) radiation can be considered an oscillating electric and magnetic field propagating through a medium that can interact with matter in its path. The electric field in the radiation can interact with electrical charges in the atoms or molecules in the matter. On the other hand, the magnetic field can interact with the magnetic field in the atomic nucleus. The study of the interaction between electromagnetic radiation and matter is termed spectroscopy. Spectroscopy is the study...
¹H NMR: Complex Splitting01:13

¹H NMR: Complex Splitting

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Electromagnetic Fields01:30

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Updated: Jun 2, 2026

Fabrication of Nanopillar-Based Split Ring Resonators for Displacement Current Mediated Resonances in Terahertz Metamaterials
10:28

Fabrication of Nanopillar-Based Split Ring Resonators for Displacement Current Mediated Resonances in Terahertz Metamaterials

Published on: March 23, 2017

Electromagnetic interaction in stacked split ring resonator arrays.

Jian-Qiang Liu1, Meng-Dong He, San Chen

  • 1National Laboratory of Solid State Microstructures, Nanjing University, Nanjing, People's Republic of China.

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|May 11, 2011
PubMed
Summary
This summary is machine-generated.

We explored how unit cells interact in metamaterials. Lower frequency plasmon resonances are insensitive to lattice density, while higher frequencies depend on current distribution and cell coupling.

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Area of Science:

  • Metamaterials Science
  • Plasmonics
  • Electromagnetics

Background:

  • Metamaterials offer unique electromagnetic properties through engineered structures.
  • Split ring resonators (SRRs) are fundamental building blocks in metamaterials, exhibiting resonant behavior.
  • Understanding inter- and intra-unit cell interactions is crucial for designing metamaterial devices.

Purpose of the Study:

  • To theoretically investigate the coupling mechanisms within stacked split ring resonator (SRR) arrays.
  • To analyze the influence of resonance mode symmetry on plasmon hybridization.
  • To determine the dependence of resonant frequencies on lattice density and inter-cell coupling.

Main Methods:

  • Theoretical demonstration of coupling effects in metamaterial unit cells.
  • Analysis of plasmon hybridization and its dependence on resonance mode symmetry.
  • Application of quasistatic electric and magnetic dipole coupling models.
  • Calculation and interpretation of electromagnetic field distributions.

Main Results:

  • Plasmon hybridization frequency is dictated by the symmetry of resonance modes.
  • Lower-frequency resonances (first and third order) show minimal sensitivity to lattice density variations.
  • Higher-frequency resonances are strongly dependent on inter-cell coupling, driven by symmetric current distribution.

Conclusions:

  • The study elucidates the interplay between unit cell constituents and their collective behavior in metamaterials.
  • Resonance frequency tuning in stacked SRR arrays can be controlled by exploiting mode symmetry and inter-cell coupling.
  • The findings provide insights into the design principles for metamaterials with tailored electromagnetic responses.