Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Generating Electromagnetic Radiations01:10

Generating Electromagnetic Radiations

5.7K
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...
5.7K
Electromagnetic Fields01:30

Electromagnetic Fields

2.5K
Electric fields generated by static charges, often referred to as electrostatic fields, are characteristically different from electric fields created by time-varying magnetic fields. While the former is a conservative field, implying that no net work is done on a test charge if it goes around in a complete loop in the field, the latter is, by definition, not a conservative field; net work is done, and it is proportional to the rate of change of magnetic flux.
However, the observation of...
2.5K
Faraday Disk Dynamo01:23

Faraday Disk Dynamo

3.0K
A Faraday disk dynamo is a DC generator, producing an emf that is constant in time. It consists of a conducting disk that rotates with a constant angular velocity in the magnetic field, perpendicular to the disk's plane. The rotation of the disk causes a change in magnetic flux, which induces an emf, causing opposite charges to develop on the rim and in the center of the disk. The polarity of the induced emf can be determined by the direction of the magnetic field and the direction of the...
3.0K
Electromagnetic Waves01:30

Electromagnetic Waves

10.2K
James Clerk Maxwell formulated a single theory combining all the electric and magnetic effects scientists knew during that time, calling the phenomena his theory predicted “Electromagnetic waves”. He brought together all the work that had been done by brilliant physicists such as Oersted, Coulomb, Gauss, and Faraday and added his own insights to develop the overarching theory of electromagnetism. Maxwell’s equations, combined with the Lorentz force law, encompass all the laws...
10.2K
Standing Electromagnetic Waves01:15

Standing Electromagnetic Waves

2.0K
Electromagnetic waves can be reflected; the surface of a conductor or a dielectric can act as a reflector. As electric and magnetic fields obey the superposition principle, so do electromagnetic waves. The superposition of an incident wave and a reflected electromagnetic wave produces a standing wave analogous to the standing waves created on a stretched string.
Suppose a sheet of a perfect conductor is placed in the yz-plane, and a linearly polarized electromagnetic wave traveling in the...
2.0K
Energy Carried By Electromagnetic Waves01:22

Energy Carried By Electromagnetic Waves

3.5K
Anyone who has used a microwave oven knows there is energy in electromagnetic waves. Sometimes, this energy is obvious, such as in the summer sun's warmth. At other times, it is subtle, such as the unfelt energy of gamma rays, which can destroy living cells. Electromagnetic waves bring energy into a system through their electric and magnetic fields. These fields can exert forces and move charges in the system and, thus, do work on them. However, there is energy in an electromagnetic wave,...
3.5K

You might also read

Related Articles

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

Sort by
Same author

Programming Insulator-to-Metallic Transport in Insulating Materials via Surface Single-Atom Engineering.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

Promoting Surface Reconstruction with a Tip-Enhanced Local Field and Electronic Interaction for Efficient Oxygen Evolution Reaction.

ACS nano·2026
Same author

Machine learning-based prediction of early invasive mechanical ventilation in ICU patients with pneumonia: Development and external validation.

International journal of medical informatics·2026
Same author

Chiral nanoparticles drive enantiomer-specific osteogenic differentiation of stem cells and accelerate bone regeneration.

Science advances·2026
Same author

A Stress-Cushioning Pocket-Cube-Like Structured Anode for Fast-Charging Lithium-Ion Batteries.

Small (Weinheim an der Bergstrasse, Germany)·2026
Same author

Deciphering Mechanism of Cocktail Effect in High-Entropy Alloy Catalysis.

Advanced materials (Deerfield Beach, Fla.)·2026

Related Experiment Video

Updated: Nov 18, 2025

A Polymer-based Piezoelectric Vibration Energy Harvester with a 3D Meshed-Core Structure
09:51

A Polymer-based Piezoelectric Vibration Energy Harvester with a 3D Meshed-Core Structure

Published on: February 20, 2019

25.7K

A flexible electromagnetic wave-electricity harvester.

Hualiang Lv1, Zhihong Yang2, Bo Liu3

  • 1Department of Materials Science, Fudan University, Shanghai, 200433, China.

Nature Communications
|February 6, 2021
PubMed
Summary

Researchers developed a novel hybrid tin@carbon (Sn@C) composite that efficiently absorbs electromagnetic (EM) energy and converts it into electricity. This self-powered material offers a promising solution for managing EM interference and creating self-powered electronic devices.

More Related Videos

Investigating the Potential of Singly Curved Thin Piezoelectric Transducers for Energy Harvesting and Structural Health Monitoring
07:02

Investigating the Potential of Singly Curved Thin Piezoelectric Transducers for Energy Harvesting and Structural Health Monitoring

Published on: November 14, 2025

23
A Simple Approach to Perform TEER Measurements Using a Self-Made Volt-Amperemeter with Programmable Output Frequency
07:43

A Simple Approach to Perform TEER Measurements Using a Self-Made Volt-Amperemeter with Programmable Output Frequency

Published on: October 5, 2019

22.9K

Related Experiment Videos

Last Updated: Nov 18, 2025

A Polymer-based Piezoelectric Vibration Energy Harvester with a 3D Meshed-Core Structure
09:51

A Polymer-based Piezoelectric Vibration Energy Harvester with a 3D Meshed-Core Structure

Published on: February 20, 2019

25.7K
Investigating the Potential of Singly Curved Thin Piezoelectric Transducers for Energy Harvesting and Structural Health Monitoring
07:02

Investigating the Potential of Singly Curved Thin Piezoelectric Transducers for Energy Harvesting and Structural Health Monitoring

Published on: November 14, 2025

23
A Simple Approach to Perform TEER Measurements Using a Self-Made Volt-Amperemeter with Programmable Output Frequency
07:43

A Simple Approach to Perform TEER Measurements Using a Self-Made Volt-Amperemeter with Programmable Output Frequency

Published on: October 5, 2019

22.9K

Area of Science:

  • Materials Science
  • Nanotechnology
  • Energy Conversion

Background:

  • Developing advanced electromagnetic (EM)-absorbing materials that can also convert waste heat into electricity is crucial for modern electronics.
  • Existing materials face challenges in simultaneously achieving high EM absorption efficiency and effective thermoelectric conversion.

Purpose of the Study:

  • To engineer a hybrid Sn@C composite with a unique cell-like splitting ability for enhanced EM energy dissipation and thermoelectric conversion.
  • To create a self-powered EM wave-electricity device utilizing the developed composite material.

Main Methods:

  • Fabrication of a hybrid Sn@C composite with Sn nanoparticles embedded in porous carbon.
  • Utilizing a cycled annealing treatment to induce a biological cell-like splitting behavior, resulting in ultrasmall, dispersed Sn nanoparticles.
  • Constructing an EM wave-electricity device using the optimized Sn@C composite.

Main Results:

  • The splitting behavior created an electron-transmitting, phonon-blocking structure, enhancing energy conversion efficiency.
  • The device achieved efficient EM to heat conversion across widely used frequencies.
  • A maximum thermoelectric figure of merit (ZT) of 0.62 at 473 K was recorded, with constant output voltage and power under microwave radiation.

Conclusions:

  • The developed Sn@C composite demonstrates a promising approach for creating self-powered devices capable of managing EM interference.
  • This hybrid material offers a dual function of EM absorption and thermoelectric power generation, addressing a significant technological challenge.