Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Electromagnetic Wave Equation

Electromagnetic Wave Equation

Maxwell's equations for electromagnetic fields are related to source charges, either static or moving. These fields act on a test charge, whose trajectory can thus be determined using suitable boundary conditions. The objective of electromagnetism is thus theoretically complete.
However, although electric and magnetic fields were first introduced as mathematical constructs to simplify the description of mutual forces between charges, a natural question emerges from Maxwell's equations:...

¹³C NMR: ¹H–¹³C Decoupling

¹³C NMR: ¹H–¹³C Decoupling

The probability of having two carbon-13 atoms next to each other is negligible because of the low natural abundance of carbon-13. Consequently, peak splitting due to carbon-carbon spin-spin coupling is not observed in spectra. However, protons up to three sigma bonds away split the carbon signal according to the n+1 rule, resulting in complicated spectra.
A broadband decoupling technique is used to simplify these complex, sometimes overlapping, signals. Broadband decoupling relies on a...

The Electrical Double Layer

The Electrical Double Layer

In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Ethical implications of high attrition in AI-based mental health interventions: a systematic review and meta-analysis.

BMC medical ethics·2026

Same author

Multiphysics Modeling and Analysis for Dendrite Problems in Solid-State Lithium/Sodium Metal Batteries.

Nano-micro letters·2026

Same author

Machine Learning-Guided Tailored Synthesis of Single Room-Temperature Phosphorescent Carbon Dots.

Small (Weinheim an der Bergstrasse, Germany)·2026

Same author

Enhanced Anti-Counterfeiting Using Dynamic Encryption with Dual Physically Unclonable Functions.

ACS applied materials & interfaces·2026

Same author

A ppb-Level Chloroform Photoacoustic Gas Sensor Based on Omnidirectional Acoustic Sensing with a 3D Microphone Phased Array.

Analytical chemistry·2026

Same author

Photoacoustic Multigas Sensor via CNN-Based Mode Division Multiplexing.

Analytical chemistry·2026

Same journal

Tuning Piezoelectricity and Pyroelectricity in Poly(vinylidene fluoride) through Ionic Liquid Anion-Size Directed Polymorph and Interface Engineering.

ACS applied materials & interfaces·2026

Same journal

Adsorption-Induced Ferroelectric Symmetry Breaking in Two-Dimensional CuInP<sub>2</sub>S<sub>6</sub>.

ACS applied materials & interfaces·2026

Same journal

Nanocomplexes Integrated into a Polymeric Bilayer Film Enhance Buccal Permeation of a GLP-1 Peptide Analogue.

ACS applied materials & interfaces·2026

Same journal

Correction to "Multienzyme Active Nanozyme for Efficient Sepsis Therapy through Modulating Immune and Inflammation Inhibition".

ACS applied materials & interfaces·2026

Same journal

A Programmable Perfusion Platform with Temperature Monitoring Achieves Multiscale Cryopreservation.

ACS applied materials & interfaces·2026

Same journal

Oral Delivery of Mesenchymal Stem Cell-Derived Extracellular Vesicles To Treat Intestinal Inflammation.

ACS applied materials & interfaces·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Apr 30, 2026

Simultaneous Synthesis of Single-walled Carbon Nanotubes and Graphene in a Magnetically-enhanced Arc Plasma

Simultaneous Synthesis of Single-walled Carbon Nanotubes and Graphene in a Magnetically-enhanced Arc Plasma

Published on: February 2, 2012

Carbon Dots-Derived Gradient-Pore Multilayer Graphene Enabled Efficient Electromagnetic Wave Absorption.

Chun-Sheng Xie¹, Cheng-Long Shen², Yi-Ge Lv²

¹School of Physical Science and Technology, Guangxi University, Nanning 530004, China.

ACS Applied Materials & Interfaces

|April 28, 2026

Summary

This summary is machine-generated.

Researchers developed a low-cost electromagnetic wave absorber using nanocobalt-anchored gradient-pore multilayer graphene. This material demonstrates excellent electromagnetic wave dissipation and impedance matching for effective absorption.

Keywords:

carbon dots dimensionality transition electromagnetic wave absorption gradient-pore multilayer graphene loss mechanism

More Related Videos

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities

Published on: July 24, 2015

Development of a 3D Graphene Electrode Dielectrophoretic Device

Development of a 3D Graphene Electrode Dielectrophoretic Device

Published on: June 22, 2014

Related Experiment Videos

Last Updated: Apr 30, 2026

Simultaneous Synthesis of Single-walled Carbon Nanotubes and Graphene in a Magnetically-enhanced Arc Plasma

Simultaneous Synthesis of Single-walled Carbon Nanotubes and Graphene in a Magnetically-enhanced Arc Plasma

Published on: February 2, 2012

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities

Published on: July 24, 2015

Development of a 3D Graphene Electrode Dielectrophoretic Device

Development of a 3D Graphene Electrode Dielectrophoretic Device

Published on: June 22, 2014

Area of Science:

Materials Science
Nanotechnology
Electromagnetism

Background:

Developing effective electromagnetic wave absorbers is crucial for mitigating electromagnetic pollution.
Current absorbers often face challenges related to cost, performance, and bandwidth.

Purpose of the Study:

To rationally design and prepare a low-cost, high-performance electromagnetic wave absorber.
To explore the dimensionality engineering of carbon materials for enhanced electromagnetic wave absorption.

Main Methods:

Prepared multilayer graphene with gradient pores by annealing carbon dots and nanocobalt powder.
Investigated the synergistic effects of heterogeneous interfaces and porous architectures.
Analyzed the dielectric and magnetic loss mechanisms.

Main Results:

Achieved a minimum reflection loss of -56.0 dB with an effective absorption bandwidth of 3.0 GHz.
Obtained a minimum reflection loss of -38.5 dB and a broad effective absorption bandwidth of 5.1 GHz.
Demonstrated a cooperative dielectric-magnetic loss mechanism enhancing wave dissipation and impedance matching.

Conclusions:

The nanocobalt-anchored gradient-pore multilayer graphene is a promising candidate for electromagnetic wave absorption.
The dimensionality transition and pore formation during synthesis offer a feasible strategy for designing advanced absorbers.
This research provides insights into addressing electromagnetic pollution challenges with novel materials.