A perspective on impedance matching and resonance absorption mechanism for electromagnetic wave absorbing

Carbon, Journal Year: 2024, Volume and Issue: 222, P. 118935 - 118935

Published: Feb. 13, 2024

Language: Английский

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Magneto-Dielectric Synergy and Multiscale Hierarchical Structure Design Enable Flexible Multipurpose Microwave Absorption and Infrared Stealth Compatibility

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 17(1)

Published: Oct. 16, 2024

Developing advanced stealth devices to cope with radar-infrared (IR) fusion detection and diverse application scenarios is increasingly demanded, which faces significant challenges due conflicting microwave IR cloaking mechanisms functional integration limitations. Here, we propose a multiscale hierarchical structure design, integrating wrinkled MXene shielding layer flexible Fe

Language: Английский

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A Rapidly Assembled and Camouflage‐Monitoring‐protection Integrated Modular Unit

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 17, 2024

Optical-electromagnetic compatible devices are urgently required in intelligent building monitors and cross-band protection. Meanwhile, the insufficient systematicness semi-empirical attempts significantly limit prosperity of materials, causing enormous challenges for deviceization material database construction. Herein, systematical component-deviceization-machine learning prediction-array construction strategy is attempted to solve bottleneck issues. A luminance-triggered camouflage-monitoring-protection triune integrated modular unit (IMU) hierarchically encapsulated simultaneously achieve efficient anti-electromagnetic interference (EMI), light-absorbing, quick gradient-colorization response. Moreover, an illumination intensity dataset a surrogate model based on fully connected neural network fitting (FCNN-fitting) constructed, which accurately predicts light-absorbing property IMUs can be instructional selection. The specifically assembled into 4*4 array, aiming at multi-scenario application programmable display, camouflage pattern, surface conformality, rapid replaceability. This work paves path provides promising optical-electromagnetic compatibility genetics-deviceization-array systematization.

Language: Английский

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Ultralight MXene/rGO aerogel frames with component and structure controlled electromagnetic wave absorption by direct ink writing

Carbon, Journal Year: 2024, Volume and Issue: unknown, P. 119650 - 119650

Published: Sept. 1, 2024

Language: Английский

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The Optimized Design of Sandwich Structured SiO₂/C@SiC/SiO₂ Composites Through Numerical Simulation for Temperature‐Resistant Radar and Infrared Compatible Stealth

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 12, 2024

Abstract In contemporary times, radar and infrared‐compatible stealth materials have emerged as a pivotal domain of research globally, aimed at augmenting the survivability military assets. However, current candidates generally exhibit subpar compatibility performance in elevated temperature environments due to imbalanced interplay between two spectral bands. this work, meticulously designed sandwich‐structure SiO 2 /C@SiC/SiO composite is proposed cope with challenge. The middle layer C@SiC composites possesses excellent microwave absorption even high temperatures. outer layers aerogels serve not only inhibit infrared radiation intensity, but also reinforce capacity by optimizing impedance matching reducing heat transferred layer. Based on numerical simulation outcomes, thickness each has been optimized attain harmonious balance properties. Ultimately, sandwich structured demonstrate low RL (reflection loss) values (←5 dB) across nearly entire X band (8–12 GHz), alongside minimal surface temperatures hovering ≈44 °C an ambient 200 °C. comprehensive investigation into impact patterns underlying mechanisms offers invaluable insights develop for high‐temperature applications, which can be applied coatings skin Mach number aircraft.

Language: Английский

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Dual polymer electrochromic adaptive camouflage devices for multiple environments based on quaterthiophene polymer and optional ion storage layers

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 483, P. 149078 - 149078

Published: Jan. 27, 2024

Language: Английский

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Deep-subwavelength multilayered meta-coatings for visible-infrared compatible camouflage

Nanophotonics, Journal Year: 2024, Volume and Issue: 13(13), P. 2391 - 2400

Published: March 21, 2024

Abstract Camouflage is a common technique in nature, enabling organisms to protect themselves from predators. The development of novel camouflage technologies, not only fundamental science, but also the fields military and civilian applications, great significance. In this study, we propose new type deep-subwavelength four-layered meta-coating consisting Si, Bi, Cr top bottom with total thickness ∼355 nm for visible-infrared compatible camouflage. visible color infrared emission properties can be independently adjusted. Colorful obtained by changing Si layer, while selective high emissivity non-atmospheric window remains. Due properties, shows angle tolerance both regions. capability our proposed region validated under different environments. deep-subwavelength, angular insensitivity, compatibility large-area fabrication feasibility promise an effective solution various applications such as weapons anti-counterfeiting.

Language: Английский

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One‐Click to 3D: Helical Carbon Nanotube‐Mediated MXene Hierarchical Aerogel with Layer Spacing Engineering for Broadband Electromagnetic Wave Absorption

Small Methods, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 28, 2024

Abstract MXenes are 2D materials known for their unique electromagnetic wave absorption (EMWA) properties arising from varied composition and structure. In this study, a one‐step ice‐assisted process is utilized to directly transform MXene into 3D single‐layer aerogels (SMAs). Furthermore, the interlayer spacing of SMAs optimized by incorporating helical carbon nanotubes (HCNTs). Because van der Waals interaction between nanosheets HCNTs, assembled HCNT@MXene (HMAs) exhibited regular porous structure moderate conductivity, leading significantly enhanced responses, as demonstrated finite element simulation. The HMAs showed an exceptional EMWA, with minimum reflection loss −51.45 dB effective bandwidth 6.48 GHz at 3.0 wt.% filler ratio. Additionally, visualization surface charge distribution power density characteristics clarified underlying EMWA mechanisms. By employing hollow gradient metamaterial design, further expanded 13.98 GHz. maximum radar cross‐section reduction values 27.08 m 2 . Moreover, excellent thermal insulation capability. This paper presents straightforward yet method fabricating offers valuable insights development application MXene‐aerogel‐based EMW absorbers.

Language: Английский

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Porous metal microsphere M@C-rGO (metal = Mn, Fe, Co, Ni, Cu) aerogels with high low-frequency microwave absorption, strong thermal insulation and superior anticorrosion performance

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(33), P. 21997 - 22012

Published: Jan. 1, 2024

Porous metal microsphere M@C-rGO (metal = Mn, Fe, Co, Ni, Cu) aerogels with high low-frequency microwave absorption, strong thermal insulation and superior anticorrosion performance are successfully constructed.

Language: Английский

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Liquid metal Induced segregated-like Electromagnetic Shielding composites with Excellent Photothermal conversion and Strain Sensing Capacities

Composites Science and Technology, Journal Year: 2024, Volume and Issue: 257, P. 110825 - 110825

Published: Aug. 22, 2024

Language: Английский

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