Graphene-based meta-coupler for direction-controllable emission of surface plasmons

Related Experiment Video

Updated: Jan 22, 2026

Visible-light Induced Reduction of Graphene Oxide Using Plasmonic Nanoparticle
07:24

Visible-light Induced Reduction of Graphene Oxide Using Plasmonic Nanoparticle

Published on: September 22, 2015

14.8K

Hua Zhu, Ming Deng, Shuqi Chen

    Optics Letters
    |July 2, 2019
    PubMed

    More Related Videos

    Photodeposition of Pd onto Colloidal Au Nanorods by Surface Plasmon Excitation06:58

    Photodeposition of Pd onto Colloidal Au Nanorods by Surface Plasmon Excitation

    Published on: August 15, 2019

    7.9K
    Engineering Antiviral Agents via Surface Plasmon Resonance13:00

    Engineering Antiviral Agents via Surface Plasmon Resonance

    Published on: June 14, 2022

    2.7K

    Related Concept Videos

    Directing Effect of Substituents: meta-Directing Groups01:09

    Directing Effect of Substituents: meta-Directing Groups

    Substituents on the benzene ring that direct an incoming electrophile to undergo substitution at the meta position are called meta directors. All meta directors either have a positive charge on the atom directly bonded to the ring or a partial positive charge. These groups function by withdrawing electrons from the ring through inductive and resonance effects. Consider the carbocation intermediates formed upon the addition of an electrophile on nitrobenzene at the...
    5.8K
    meta-Directing Deactivators: –NO2, –CN, –CHO, –⁠CO2R, –COR, –CO2H01:13

    meta-Directing Deactivators: –NO2, –CN, –CHO, –⁠CO2R, –COR, –CO2H

    All meta-directing substituents are deactivating groups. These substituents withdraw electrons from the aromatic ring, making the ring less reactive toward electrophilic substitution. For example, the nitration of nitrobenzene is 100,000 times slower than that of benzene because of the deactivating effect of the nitro group. The first step in an electrophilic aromatic substitution is the addition of an electrophile to form a resonance-stabilized carbocation. The energy diagrams for...
    6.6K
    Emission Spectra02:39

    Emission Spectra

    When solids, liquids, or condensed gases are heated sufficiently, they radiate some of the excess energy as light. Photons produced in this manner have a range of energies, and thereby produce a continuous spectrum in which an unbroken series of wavelengths is present.
    75.9K
    Positron Emission Tomography01:29

    Positron Emission Tomography

    Positron emission tomography (PET) is a medical imaging technique involving radiopharmaceuticals — substances that emit short-lived radiation. Although the first PET scanner was introduced in 1961, it took 15 more years before radiopharmaceuticals were combined with the technique and revolutionized its potential.
    One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body...
    7.0K
    Crossed Aldol Reaction Using Strong Bases: Directed Aldol Reaction00:56

    Crossed Aldol Reaction Using Strong Bases: Directed Aldol Reaction

    The reaction between two different carbonyl compounds comprising α hydrogen in the presence of a strong base like lithium diisopropylamide (LDA) to form a crossed aldol product is known as a directed aldol reaction. The directed aldol reaction is depicted in Figure 1.
    2.7K
    Atomic Emission Spectroscopy: Lab01:29

    Atomic Emission Spectroscopy: Lab

    AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...
    585