Microwave Absorption Research Articles

Superblack Carbon Hierarchitectures for Multispectral Absorption.

Multispectral absorbing materials that can efficiently dissipate waves across the visible, infrared, and microwave regimes have long been pursued for advanced applications in fields such as space exploration, stealth, and camouflage. However, the wide range of incident wavelengths, spanning five orders of magnitude, presents a significant challenge for the practical implementation of multispectral absorbers. Herein, superblack carbon hierarchitectures (SCHs) are designed using a bottom-up approach involving the self-assembly and self-sacrifice of hydrogen-bonded organic frameworks (HOFs), realizing synergistic morphological customization and dielectric gene editing (via carbon nitride like-moieties conjugated with C═C short chains). Through the cross-dimensional coupling action between light-trapping hierarchitecture and robust dielectric loss, superb visible light absorption (>99.6%), high infrared absorption (98.5%/97.5%/99.6% for long-/mid-/short-wavelength infrared regimes), and ultrabroad microwave absorption (effective bandwidth of 8.52GHz, nearly covering both the X and Ku bands) can be simultaneously achieved in monolayer SCHs-based absorbers. Furthermore, the topologically transformed structures of SCHs enable a systematic dissection of the longstanding ambiguity surrounding the geometrical effect, revealing the synergistic influence of fractal dimension and interconnection status of microparticles, particularly in the microwave regime. This work introduces a new paradigm for multispectral absorption and advances the understanding of absorption mechanisms for developing next-generation absorbers.

Optimized microwave absorption and thermal properties for TiB2@BN/PDMS composites via TiB2@BN heterogeneous interface engineering.

Optimized microwave absorption and thermal properties for TiB2@BN/PDMS composites via TiB2@BN heterogeneous interface engineering.

Metal-nitrilotriacetic acid chelate derived strategy to selectively produce porous Ni/C, CoNi/C and Co/C magnetic heterostructured nanorods for lightweight and strong microwave absorption

Metal-nitrilotriacetic acid chelate derived strategy to selectively produce porous Ni/C, CoNi/C and Co/C magnetic heterostructured nanorods for lightweight and strong microwave absorption

Influence of different dyes on tailoring electromagnetic shielding and microwave absorption in polypyrrole

Influence of different dyes on tailoring electromagnetic shielding and microwave absorption in polypyrrole

Microwave heating of microwave absorbing and transparent liquids: A molecular dynamics study

Microwave heating of microwave absorbing and transparent liquids: A molecular dynamics study

Dimensionality-driven sustainable biocarbon-based microwave absorbers: From bio-waste to functional materials

Dimensionality-driven sustainable biocarbon-based microwave absorbers: From bio-waste to functional materials

Interface engineering optimization: in-situ growth NiZn/carbon aerogel composite for high-performance microwave absorption

Interface engineering optimization: in-situ growth NiZn/carbon aerogel composite for high-performance microwave absorption

Defect-engineered hollow black TiO2 for enhanced microwave absorption via interface polarization

Defect-engineered hollow black TiO2 for enhanced microwave absorption via interface polarization

Metal-organic framework-based hybrid aerogel fibers for triboelectric nanogenerators and their carbonized derivatives for microwave absorption

Metal-organic framework-based hybrid aerogel fibers for triboelectric nanogenerators and their carbonized derivatives for microwave absorption

Flexible ZrO2/ZrB2/C nanofiber felt with enhanced microwave absorption and ultralow thermal conductivity

Flexible ZrO2/ZrB2/C nanofiber felt with enhanced microwave absorption and ultralow thermal conductivity

Corrigendum to “Co-Ni doped lignin-derived carbon-based materials with “mosaic” structure for efficient microwave absorption” [Mater. Lett. 386 (2025) 138215

Corrigendum to “Co-Ni doped lignin-derived carbon-based materials with “mosaic” structure for efficient microwave absorption” [Mater. Lett. 386 (2025) 138215

Structural, physicochemical and dielectric features of Gd3+ substituted Ba–Zn–Y-hexa-ferrites for microwave absorption applications

Structural, physicochemical and dielectric features of Gd3+ substituted Ba–Zn–Y-hexa-ferrites for microwave absorption applications

Influence of particle geometry and polymer matrix composition on filament processing, rheological and electromagnetic properties: Towards 3D printable composites for microwave absorption

Influence of particle geometry and polymer matrix composition on filament processing, rheological and electromagnetic properties: Towards 3D printable composites for microwave absorption

Heterogeneous interface engineering in FexOy@C@Expanded graphite array structure with confined magnetic coupling to boost microwave absorption

Heterogeneous interface engineering in FexOy@C@Expanded graphite array structure with confined magnetic coupling to boost microwave absorption

Caterpillar-inspired electromagnetic dual-function cuniculi composites for efficient broad bandwidth microwave absorption

Caterpillar-inspired electromagnetic dual-function cuniculi composites for efficient broad bandwidth microwave absorption

Preparation and microwave absorption properties of MWCNTs/RGO/NiFe-LDH three-dimensional composites with varying metal ratios

Preparation and microwave absorption properties of MWCNTs/RGO/NiFe-LDH three-dimensional composites with varying metal ratios

Fabrication of Ti3C2Tx MXene/single-walled carbon nanohorn composite by sonication-induced self-assembly method for enhanced microwave absorption

Fabrication of Ti3C2Tx MXene/single-walled carbon nanohorn composite by sonication-induced self-assembly method for enhanced microwave absorption

Microwave-Assisted Depolymerization of Polymethacrylates.

Advancing sustainability in the polymer industry requires efficient, ecofriendly recycling strategies. This study introduces a catalyst-free, microwave-assisted depolymerization method for RAFT-terminated polymethacrylates, utilizing methanol as a dual-functional cosolvent to enhance microwave absorption and provide a benign reaction medium. The effectiveness of this approach was demonstrated primarily with poly(methyl methacrylate) (PMMA), including variations in molecular weight (Mn ≈ 5k, 12k, 17k g/mol) and RAFT end-groups (dithiobenzoate and trithiocarbonate). Applicability was further confirmed with poly(2-hydroxyethyl methacrylate) (PHEMA) and poly(benzyl methacrylate) (PBzMA). Depolymerization efficiency showed strong temperature dependence, with significant monomer recovery observed between 110 and 140 °C, while operating effectively at high repeat unit concentrations (up to 200 mM). This rapid, catalyst-free process, operating efficiently at elevated temperatures like 120 °C, presents a green, scalable, and economically viable recycling solution, aligning with circular economy principles to mitigate polymer waste.

Miniaturized broadband absorber based on fractal structure metasurface

A broadband metasurface microwave absorber with a miniaturized size is presented under two mechanisms. A frequency selective surface based on the Minkowski (MSK) fractal structure is constructed to provide a lower resonance frequency with the similar size, and the Salisbury screen is designed to create high-frequency resonance. Then, a second-order MSK fractal ring is loaded to realize impedance matching over the entire bandwidth. The absorption performance of the metasurface absorber (MA) proposed is validated by the equivalent transmission line model, the Smith chart, and the surface current distribution. The simulation results demonstrate an absorption bandwidth of 125% with an absorption rate of >90% over 0.3–1.3 GHz. The thickness of the proposed absorber is 0.075λ, and the size of the unit cell is 0.1λ. The developed absorber exhibits stable absorption performance for both TE and TM polarizations within an incident angle of 40°. The experimental results agree with those of full-wave simulation.

Microwave absorbent enhancement of multi-thermal field effect: Pyrolysis of waste printed circuit boards.

Microwave absorbent enhancement of multi-thermal field effect: Pyrolysis of waste printed circuit boards.