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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:

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Related Experiment Video

Updated: Jun 5, 2026

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
13:44

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Published on: December 27, 2012

Bioinspired MXene@PNIPAAm Composite Enables Switchable Microwave Absorption.

Wei Feng1, Linlin Zhao1, Xialong Cai1

  • 1School of Mechanical Engineering, Chengdu University, 2025 Chengluo Avenue, Chengdu 610106, China.

ACS Applied Materials & Interfaces
|June 4, 2026
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel temperature-responsive material for adaptive electromagnetic interference protection. This smart composite exhibits switchable microwave absorption, offering advanced solutions for next-generation electronic devices.

Keywords:
Bionic structurePNIPAAmTi3C2Tx MXeneswitchable microwave absorptiontemperature-responsiveness

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Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
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Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials

Published on: September 26, 2014

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Last Updated: Jun 5, 2026

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
13:44

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Published on: December 27, 2012

Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
10:35

Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials

Published on: September 26, 2014

Area of Science:

  • Materials Science
  • Nanotechnology
  • Polymer Science

Background:

  • Stimuli-responsive microwave absorbing (MA) materials are crucial for adaptive electromagnetic interference (EMI) protection.
  • Existing materials often lack the ability to dynamically adjust their electromagnetic properties under varying service conditions.

Purpose of the Study:

  • To fabricate a bioinspired, temperature-responsive composite for switchable microwave absorption.
  • To investigate the correlation between microstructural changes and tunable electromagnetic performance.

Main Methods:

  • In situ polymerization of poly(N-isopropylacrylamide) (PNIPAAm) within Ti3C2Tx MXene dispersions.
  • Characterization of the composite's microstructural evolution and dielectric properties in response to temperature changes.

Main Results:

  • The composite demonstrated a reversible microstructural transformation of MXene nanosheets, mimicking plant stomata, due to PNIPAAm's conformational changes.
  • Achieved a minimum reflection loss of -47.8 dB and an effective absorption bandwidth of 5.9 GHz at 50 °C.
  • Exhibited negligible absorption at 20 °C, showcasing switchable performance.

Conclusions:

  • The study presents a viable strategy for creating intelligent, stimuli-responsive MA materials using MXene@polymer architectures.
  • The developed material offers promising prospects for advanced EMI shielding and adaptive electromagnetic devices.