In Situ Atomic Reconstruction Engineering Modulating Graphene-Like MXene-Based Multifunctional Electromagnetic...

Area of Science:

• Materials Science
• Electromagnetics
• Nanotechnology

Background:

• The growing demand for advanced detection and guidance technologies necessitates the development of materials with tunable electromagnetic (EM) properties across multiple spectrums.
• Exploring the multispectral response of materials is crucial for creating sophisticated EM functional devices.

Purpose of the Study:

• To fabricate MXene/TiO2 hybrids with tunable conduction loss and polarization relaxation for multispectral EM applications.
• To investigate the adjustable spectral responses of these hybrids in the GHz, infrared, and visible spectrums.
• To construct and evaluate various EM devices based on the developed MXene/TiO2 hybrids.

Main Methods:

• In situ atomic reconstruction engineering was employed to synthesize MXene/TiO2 hybrids.
• The spectral responses of the hybrids were characterized across GHz, infrared, and visible ranges.
• Electromagnetic devices, including an antenna array, bandpass filter, and infrared stealth device, were fabricated using the hybrids.

Main Results:

• MXene/TiO2 hybrids demonstrated tunable spectral responses in the GHz, infrared, and visible spectrums.
• An antenna array achieved excellent EM energy harvesting in multiple microwave bands (|S11| up to -63.2 dB) and was tunable by bending.
• An ultra-wideband bandpass filter exhibited a 5.4 GHz passband and effective EM signal suppression.
• An infrared stealth device showed low emissivity (<0.2) in the 6-14 µm wavelength range.

Conclusions:

• The fabricated MXene/TiO2 hybrids offer tunable multispectral electromagnetic properties.
• These materials are suitable for developing advanced multifunctional EM devices, including energy harvesting, filtering, and stealth applications.
• This work provides a new platform for designing next-generation multi-spectrum electromagnetic devices.