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

Mesh Analysis for AC Circuits01:12

Mesh Analysis for AC Circuits

In the domain of radio communication, the significance of impedance matching must be considered. It is crucial to ensure the efficient transmission of signals between radio transmitters and receivers. Achieving this balance involves using impedance-matching circuits, with one fundamental configuration comprising a resistor, capacitor, and inductor.
The process of harmonizing these impedances begins with a clear understanding of the input and output signals. Once these signals are known, the...
Clipper Circuit01:18

Clipper Circuit

A clipper circuit is a fundamental wave-shaping device that harnesses the unique properties of diodes to alter and control waveform characteristics. This technology is widely used in electronic devices, especially in television and radar communication systems, where it enhances waveform modulation in both transmitters and receivers.
The operation of a clipper circuit can be exemplified by analyzing a dual-clipper configuration setup that integrates two ideal diodes, each paired with a biasing...
Design Example: Capacitance Multiplier Circuit01:20

Design Example: Capacitance Multiplier Circuit

In integrated circuit technology, a capacitance multiplier is often utilized to produce a larger capacitance value when a small physical capacitance falls short. This is achieved by a circuit that multiplies capacitance values by a factor of up to 1000, such that a 10-pF capacitor can replicate the performance of a 100-nF capacitor.
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.
Design Example01:23

Design Example

The innovation of touch-tone telephony revolutionized the telecommunications industry by replacing the traditional rotary dial with a dual-tone multi-frequency (DTMF) signaling system. This system uses a matrix-style keypad with buttons arranged in four rows and three columns, creating 12 distinct signals each assigned to a pair of frequencies. Each button press results in a simultaneous generation of two sinusoidal tones – one from a low-frequency group (697 to 941 Hz) and one from a...
Load-frequency control01:28

Load-frequency control

Load-frequency control (LFC) is vital for maintaining power system stability, ensuring that frequency and power flows remain within acceptable limits during load changes. Turbine-governor control eliminates rotor accelerations and decelerations following load changes. However, a steady-state frequency error persists when the change in the turbine-governor reference setting is zero. In an interconnected power system, each area agrees to export or import a scheduled amount of power through...
The Electrical Double Layer01:30

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

2D Materials Enabling Intelligent Multispectral Electromagnetic Responses and Devices.

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

Artificially Magnetically Programmed Metamaterial Films for Enhanced Ultra-Wideband Electromagnetic Response.

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

Multispectrum Electromagnetic Response in FeNiHo/C Heterodimensional Structure for Microwave Absorption and Multimode Photodetection.

Advanced materials (Deerfield Beach, Fla.)·2025
Same author

A Perspective on High-Entropy Oxides as Potential Electromagnetic Wave Absorbers.

Advanced materials (Deerfield Beach, Fla.)·2025
Same author

A core-shell Cu<sub>2</sub>O@Cu-MOF for electromagnetic wave absorption and selective shielding.

Nanoscale horizons·2025
Same author

Controlled Modulation of Intrinsic Electron Response in C/Co<sub>x</sub>T<sub>y</sub> Nanoplates Toward Multispectral Excitation Devices.

Advanced materials (Deerfield Beach, Fla.)·2025
Same journal

Design Principles for Fluid Molecular Ferroelectrics.

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

Generating Unconventional Spin-Orbit Torques With Patterned Phase Gradients in Tungsten Thin Films.

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

An In Situ H<sub>2</sub>S-Activated Plasmonic Nanozyme for Near-Infrared II Photo-Thermoelectric Catalytic Therapy.

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

A Recyclable and Sustainable Hydroxypropyl Methylcellulose Electrolyte for Electrochromic Devices.

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

Perovskite Heterostructures for Optoelectronic Applications.

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

Light-Written Nonvolatile Polarization via Defect-Engineered Charge Trapping.

Advanced materials (Deerfield Beach, Fla.)·2026
See all related articles

Related Experiment Video

Updated: Jun 5, 2026

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters
15:25

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters

Published on: February 4, 2018

Local Charge Engineering Through Anion-Cation Co-modulation for Multifunctional Programmable Electromagnetic Wave

Dan Wang1, Chongbo Liu1, Hualong Peng2

  • 1Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, School of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang, P. R. China.

Advanced Materials (Deerfield Beach, Fla.)
|June 4, 2026
PubMed
Summary
This summary is machine-generated.

Researchers developed new electromagnetic wave absorption (EMWA) materials using a dual-ion co-modulation strategy. These tunable aerogels offer broad bandwidth and customizable performance for advanced EMWA systems.

Keywords:
built‐in electric fielddual‐ion co‐modulationgelation phase transformationlocal charge tuningmultifunctional integratedprogrammable EMWA

Related Experiment Videos

Last Updated: Jun 5, 2026

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters
15:25

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters

Published on: February 4, 2018

Area of Science:

  • Materials Science
  • Nanotechnology
  • Electromagnetics

Background:

  • Tunable electromagnetic wave absorption (EMWA) materials are crucial for complex electromagnetic environments.
  • Conventional EMWA materials often have limited controllability and narrow absorption bands.

Purpose of the Study:

  • To introduce a novel dual-ion co-modulation strategy for enhanced EMWA material performance.
  • To fabricate and characterize transition metal sulfide/sulfur-nitrogen co-doped carbon (MxSy/SNC) aerogels.
  • To demonstrate tunable absorption peaks and bandwidths for programmable EMWA systems.

Main Methods:

  • Coordination-mediated gelation phase transformation for aerogel fabrication.
  • First-principles calculations to understand electronic structure modifications.
  • Characterization of EMWA properties, including reflection loss (RL) and effective absorption bandwidth.

Main Results:

  • N,S co-doping of carbon matrix enhanced dipole polarization and broadened the EMWA band, covering the entire Ku band at 1.65 mm thickness.
  • Cation-induced modulation allowed precise tuning of dielectric response and absorption characteristics.
  • All MxSy/SNC samples achieved minimum reflection loss below -60 dB.
  • Reflection loss peaks shifted from 17.44 GHz to 11.6, 9.84, and 5.12 GHz based on the metal ion (Fe, Co, Ni, Cu).

Conclusions:

  • The dual-ion co-modulation strategy provides a new pathway for designing high-performance, programmable EMWA materials.
  • The fabricated MxSy/SNC aerogels exhibit significant potential for applications in communications and advanced EMWA systems.
  • This approach enables multifunctional materials with customizable electromagnetic wave absorption capabilities.