Related Experiment Video

Updated: Oct 2, 2025

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

7.9K

Vacancy tuned coupling in terahertz metamaterial arrays

Tianlong Wen, Jie Huang, Yuanpeng Li

    Optics Express
    |February 25, 2022
    PubMed
    Summary

    Introducing vacancies into metamaterial arrays tunes terahertz wave interactions. This enables active modulation of terahertz wave amplitude, phase, and polarization using silicon-metal hybrid metamaterials.

    More Related Videos

    Simulation, Fabrication and Characterization of THz Metamaterial Absorbers13:44

    Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

    Published on: December 27, 2012

    15.5K
    Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing09:39

    Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing

    Published on: June 28, 2024

    1.1K

    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:
    1.1K
    IR Absorption Frequency: Hybridization01:21

    IR Absorption Frequency: Hybridization

    Hydrocarbons such as alkanes, alkenes, and alkynes show characteristic C–H stretching absorption bands. These IR stretching frequencies depend on the hybridization of the involved carbon atom and can be explained in terms of the s character of each hybridized atomic orbital.
    Among the sp, sp2, and sp3 hybridized orbitals, sp orbitals have the maximum s character (50%). Consequently, the electrons are held more closely to the nucleus, resulting in stronger and shorter C–H bonds that...
    803
    Biasing of Metal-Semiconductor Junctions01:27

    Biasing of Metal-Semiconductor Junctions

    Biasing metal-semiconductor junctions involves applying a voltage across the junction. Specifically, the metal is connected to a voltage source, while the semiconductor is grounded. This technique is essential for controlling the direction and magnitude of current flow in electronic devices, including diodes, transistors, and photovoltaic cells.
    In Schottky junctions, where the semiconductor is n-type, applying a positive voltage to the metal relative to the semiconductor reduces its Fermi...
    359
    Transmission Line Design Considerations01:23

    Transmission Line Design Considerations

    Aluminum has become the material of choice for overhead transmission lines, surpassing copper due to its abundance and cost-effectiveness. The most prevalent type is the aluminum conductor, steel-reinforced (ACSR), which combines aluminum strands around a steel core. Other variants include all-aluminum conductors (AAC), all-aluminum alloy conductors (AAAC), aluminum conductor alloy-reinforced (ACAR), and aluminum-clad steel conductors. Advanced designs, such as aluminum conductors with steel...
    232
    ¹H NMR: Long-Range Coupling01:27

    ¹H NMR: Long-Range Coupling

    The coupling interactions of nuclei across four or more bonds are usually weak, with J values less than 1 Hz. While these are usually not observed in spectra, the presence of multiple bonds along the coupling pathway can result in observable long-range coupling.
    In alkenes, spin information is communicated via σ–π overlap, as seen in allylic (four-bond) and homoallylic (five-bond) couplings. These coupling interactions are stronger when the σ bond is parallel to the alkene...
    2.0K
    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...
    331