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Related Experiment Video

Updated: May 27, 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

Terahertz pinch harmonics enabled by single nano rods.

Hyeong-Ryeol Park1, Young-Mi Bahk, Jong Ho Choe

  • 1Department of Physics and Astronomy and Center for Subwavelength Optics, Seoul National University, Seoul, 151-747, Korea.

Optics Express
|November 24, 2011
PubMed
Summary

Researchers developed a terahertz (THz) analogue of pinch harmonics using metallic nanorods on nanoresonators. This technique controls THz waves by suppressing fundamental modes and enhancing higher harmonics for potential switching and detection applications.

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Area of Science:

  • Physics
  • Nanotechnology
  • Optics

Background:

  • Pinch harmonics in music suppress fundamental frequencies, emphasizing specific overtones.
  • Terahertz (THz) nanoresonators exhibit unique electromagnetic properties.

Purpose of the Study:

  • To create a THz analogue of pinch harmonics.
  • To investigate the effect of metallic nanorods on THz nanoresonators.
  • To explore applications in THz switching and detection.

Main Methods:

  • Fabrication of metallic nanorods on THz nanoresonators.
  • Positioning nanorods at harmonic nodes.
  • Characterization of THz wave suppression and harmonic enhancement.

Main Results:

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Last Updated: May 27, 2026

Fabrication of Nanopillar-Based Split Ring Resonators for Displacement Current Mediated Resonances in Terahertz Metamaterials
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  • A nanorod at a harmonic node suppressed the fundamental mode, enhancing higher harmonics.
  • A skin-depth-wide nanorod at the midpoint eliminated all resonances.
  • Demonstrated precise control over THz wave propagation using nanoparticles.

    • Conclusions:

    • The THz pinch harmonic technique offers a novel method for manipulating THz waves.
    • Strategic nanoparticle placement enables tailored THz electromagnetic responses.
    • This research opens pathways for advanced THz devices, including switches and detectors.