ADVANCED MATERIALS
·
2020
·Vol. 33
·期 1
·2005074
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IF 27.398
Yang Li,Chongjia Lin,Zuoxu Wu,Zhongying Chen,Cheng Chi,Feng Cao,Deqing Mei,He Yan,Chi Yan Tso,Christopher Y. H. Chao,Baoling Huang
Low-cost and large-area solar–thermal absorbers with superior spectral selectivity and excellent thermal stability are vital for efficient and large-scale solar–thermal conversion applications, such as space heating, desalination, ice mitigation, photothermal catalysis, and concentrating solar power. Few state-of-the-art selective absorbers are qualified for both low- ( < 200 ° C) and high-temperature ( > 600 ° C) applications due to insufficient spectral selectivity or thermal stability over a wide temperature range. Here, a high-performance plasmonic metamaterial selective absorber is developed by facile solution-based processes via assembling an ultrathin ( ≈ 120 nm) titanium nitride (TiN) nanoparticle film on a TiN mirror. Enabled by the synergetic in-plane plasmon and out-of-plane Fabry–Pérot resonances, the all-ceramic plasmonic metamaterial simultaneously achieves high, full-spectrum solar absorption (95%), low mid-IR emission (3% at 100 ° C), and excellent stability over a temperature range of 100–727 ° C, even outperforming most vacuum-deposited absorbers at their specific operating temperatures. The competitive performance of the solution-processed absorber is accompanied by a significant cost reduction compared with vacuum-deposited absorbers. All these merits render it a cost-effective, universal solution to offering high efficiency (89–93%) for both low- and high-temperature solar–thermal applications.
研究领域:
材料科学
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纳米光子学
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可再生能源
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等离激元学
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太阳能转换
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DOI
高影响因子
Matter
·
2024
·
IF 17.3
Jinhu Zhang,Nana Zhou,Erqian Dong,Chuang Zhang,Zhongchang Song,Sheng Liu,Chen Yang,Xiaochun Su,Shujia Wang,Yu Zhang
Dolphins utilize soft forehead tissues for dynamic detection by efficiently transmitting and manipulating broadband acoustic waves. Imparting high acoustic transparency, gradient refractive index, and softness to acoustic functional materials can significantly enhance sound wave manipulation. Conventional metamaterials, consisting of solid and impedance-mismatched meta-atoms, have limitations in achieving acoustic transparency and flexibility. Here, we overcome these constraints with a new class of acoustic soft bio-metamaterials (SBMs) composed of solid microparticles or liquid microdroplets dispersed in a hyper-elastomer. The SBMs exhibit an extraordinary combination of high acoustic transparency with transmission coefficients near 1, a gradient refractive index above 1.25, and a low elastic modulus under 100 kPa comparable to biological tissues. Furthermore, we developed a dolphin-inspired tunable subwavelength acoustic beamformer using SBMs, which can dynamically modulate acoustic beam patterns through mechanical stretching. SBMs offer a new design paradigm for acoustic soft metamaterials and have potential applications in underwater monitoring and biomedical ultrasound.
研究领域:
生物医学工程
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声学材料
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超材料
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生物仿生学
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医学超声
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柔性电子
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Heqiang Liu,Yubei Zhang,Xingmin Liu,Wenyan Duan,Minghang Li,Qian Zhou,Shan Li,Gong Wang,Guifang Han
Electromagnetic absorption materials that possess efficient absorption performance and broad absorption bandwidth are needed to combat the electromagnetic interference (EMI). SiBCN ceramic-based metamaterials modified with defect-rich carbon nanofibers (CNFs) were developed by combining the additive manufacturing technique and polymer derived ceramic route. Meta-structures were patterned by additive manufacturing of preceramic polymer and followed by thermolysis of the green bodies. Defect-rich CNFs were in-situ generated by thermolysis of nanocellulose introduced into the preceramic green bodies. When the content of cellulose is 6.0 wt% and the annealing temperature is 1200 °C, the real and imaginary part of permittivity can reach as high as 17.0 and 7.0, respectively. Cole-Cole circle plots indicates that the CNFs-SiBCN ceramics possess strong polarization capability due to the defect-rich structure of CNFs. At the thickness of 1.8 mm, the minimal reflection loss (RL min ) can reach −20.0 dB while the effective absorption bandwidth reached 2.85 GHz. Through multi-scale (nano and macro) designing, a simulated ultra-broad effective absorption bandwidth of 32.4 GHz from 7.6 GHz to 40 GHz was achieved, where the RL min reached −46.0 dB at the frequency of 26.8 GHz. This work finds innovative route for the development of ceramic-based broadband electromagnetic absorption materials and new application for the polymer derived ceramics.
研究领域:
材料科学
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电磁学
·
陶瓷
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增材制造
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纳米技术
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产品关联
DOI
高影响因子
iScience
·
2024
·
IF 4.6
Tonghui Lu,Xianglin Li,Mengying Lu,Wenhao Lv,Wenzhuo Liu,Xuanchen Dong,Zhe Liu,Shangzhen Xie,Song Lv
Anti-icing and de-icing are vital for infrastructure maintenance. While carbon-based materials with photothermal or electrothermal effects have advanced, they face challenges like environmental dependence, poor resistance, high energy consumption, and complex manufacturing. Here, we developed a scalable, hybrid metamaterial driven by photothermal/electrothermal for all-weather anti-icing/de-icing. Its nanostructured surface delays icing by 360 s at −30°C, breaking records across a wide temperature range. The porous structure enhances light absorption, achieving a delayed icing time of 2500 s at −20°C under one sunlight. The graphene film’s high conductivity allows rapid de-icing with 1.6W power. After 720 h of outdoor exposure, the metamaterial retained a contact angle above 150°, confirming durability. More critically, we have demonstrated that the metamaterial can be manufactured on a large scale, which is essential for improving the economics of the anti-icing/de-icing sector.
研究领域:
材料科学
·
能源工程
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产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2024
·Vol. 12
·期 21
·7644-7651
·
IF 5.7
Zechao Xu,Weiyi Lu,Kelan Yan,Runhua Fan,Ningzhong Bao
Single-phase metamaterials are a group of attractive alternatives to ordered double negative metamaterials (DNMs) that exhibit negative permittivity (ε < 0) and negative permeability (μ < 0) with periodic unit cells. However, achieving double negative electromagnetic properties in a single-phase material in the radio-frequency range is challenging. This study presents the synthesis of the single-phase metamaterial, selenospinel CuxZn1−xCr2Se4, from metallic powders through a simple solid-state reaction process. The double negative values of ε and μ were observed in the frequency range of 484–1000 MHz for Cu0.8Zn0.2Cr2Se4 (x = 0.2) and 638–1000 MHz for Cu0.6Zn0.4Cr2Se4 (x = 0.4). The negative value of ε is attributed to the plasmonic state of delocalized carriers in the metallic ferromagnetic CuCr2Se4 and can be described using the Drude model. The suppression of magnetic resonance induced by the eddy current was alleviated through appropriate doping of the Zn element. Based on the skin effect, a theoretical model was constructed to elucidate the magnetic resonance-dependent negative permeability. In this study, metallic ferromagnetic chalcospinels are introduced into the field of single-phase DNMs, which significantly broadens the range of metamaterials. Furthermore, this study contributes to the theoretical understanding and tuning mechanism of double negative properties.
研究领域:
材料科学
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物理学
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DOI
高影响因子
Materials Horizons
·
2025
·
IF 10.7
Chenchen Wang,Xiuyi Lin,Chuanshuang Hu,Yao Ding,Zhuoqun Wang,Yonghui Zhou,Xi Lin,Jiangtao Xu
Epsilon-negative metamaterials (ENMs) have attracted extensive research interest due to their unique physical properties and advanced applications in electromagnetic fields. In this study, carbonized wood@Prussian blue derivative (CW@PBD) metacomposites were fabricated from a carbonized wood@Prussian blue analogue (PBA). By varying the PBD content, the negative permittivity constant of the supercomposite can be tuned between −45 and −20. The CW@PBD metacomposites exhibit outstanding electromagnetic interference (EMI) shielding effectiveness of 39 dB, with a significant 40.9% increase in absorption loss (SEA). Notably, as the PBD content rises, the CW@PBD composites transform from EMI shielding to microwave absorption. The minimum reflection loss (RLmin) reaches −49.2 dB, and the effective absorption bandwidth (EAB) covers the entire X-band. Moreover, the CW@PBD metacomposites demonstrate remarkable Joule heating capabilities, achieving a steady-state saturation temperature (Ts) of 255.68 °C at 3 V. This research offers a promising approach for synthesizing ENMs, endowing biomass-based materials with desired functions for electromagnetic applications.
研究领域:
材料科学
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电磁学
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生物质工程
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产品关联
DOI
PubMed
高影响因子
Additive Manufacturing
·
2025
·
IF 11.1
Cunxian Wang,Haodong Wang,Lu Tang,Jimei Xue,Zhijun Wang,Hanjun Wei
Microwave absorbing structures are important for addressing challenges in complex electromagnetic (EM) and physical environments because they offer broadband absorption, a lightweight design, and mechanical load-bearing capabilities. Herein, this work employed vat photopolymerization 3D printing and polymer-derived ceramics (PDCs) technology to manufacture Re 2 O 3 -modified SiOC metamaterials, where Re refers to holmium (Ho), neodymium (Nd), and yttrium (Y). The materials feature a triply periodic minimal surface (TPMS) meta-structure inspired by the gyroid structure. The effects of different Re elements on the dielectric, magnetic, microwave absorption, and compression properties were investigated. Compared with the original SiOC, Ho 2 O 3 SiOC, and Y 2 O 3 SiOC ceramics, the Nd 2 O 3 SiOC ceramic demonstrated excellent absorption characteristics within the X band. It achieves a minimum reflection loss (RL min ) of 45.12 dB at 4.15 mm and an effective absorption bandwidth (EAB) spanning 4.2 GHz from 3.5 to 3.7 mm. This performance is attributed mainly to the TPMS meta-structure, which improves impedance matching. The Nd 2 O 3 particles enhance the dielectric and magnetic losses. The Nd 2 O 3 SiOC ceramic also demonstrated strong mechanical properties, with a maximum failure strength of 11.3 MPa and a Young’s modulus of 1.72 GPa. These results arise from the uniform dispersion and fine-scale distribution of Nd 2 O 3 within the SiOC matrix. The CST simulations indicate that the Nd 2 O 3 SiOC metamaterials cover the entire C-band (4–8.2 GHz), which is particularly effective within thicknesses ranging from 2.9 to 5.0 mm. Consequently, Nd 2 O 3 SiOC ceramics display substantial promise in both their low-frequency and broadband absorption capabilities, as well as in their mechanical load-bearing properties.
研究领域:
材料科学
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电磁学
·
结构工程
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产品关联
DOI
高影响因子
Advanced Optical Materials
·
2026
·
IF 7.2
Mengcheng Wang,Hongbing Shi,Di Wu,Li Jiang,Zhijuan Su,Zhuoqing Yang,Guifu Ding,Faheng Zang
Achieving low-cost patterning of 10 nm-scale nanostructures remains a critical challenge in nanofabrication. Conventional electron beam lithography has a prolonged processing time and limited throughput due to its intrinsic small-area processing nature. Extreme ultraviolet (EUV) lithography faces prohibitive costs in equipment and materials. While industrial nanoimprinting offers a lower-cost, high-throughput alternative, its resolution is fundamentally constrained by the template's minimum feature size. Herein, we present a new nanofabrication process that exploits the redeposition effect in ion milling to fabricate controllable 10 nm-scale nanogaps. This approach enabled the preparation of gratings and nanorings array integrated with noble metal nanogaps for applications in surface-enhanced Raman spectroscopy (SERS). Furthermore, gratings and nanopillar arrays with sidewalls coated by a metal mask were dry-etched to form a self-aligned stacked nanomorphology on a silicon substrate without optical alignment, inheriting the metal mask's minimum feature size. The resulting high-quality templates subsequently facilitated high-fidelity replication of diminutive structures via nanoimprint lithography (NIL). This scalable strategy holds significant potential as a feasible route for manufacturing applications in nanophononics, biosensing, quantum devices, integrated circuits (ICs), and beyond.
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Energy
·
2025
·
IF 8.6
Qinglong Hu,Ruiming Tan,Fanlei Qin,Jianfeng Wang,Zifan Zhang,Peng Xue,Rui Zhu,Gongxun Bai
Passive daytime radiative cooling (PDRC) has emerged as a promising solution to address the escalating energy and environmental challenges, owing to its zero energy consumption and emission-free operation. However, many existing PDRC systems suffer from low efficiency or limited practical applicability. Here, we propose a photonic-engineered porous polymer film based on rare earth phosphors. The incorporation of rare earth phosphors not only enhances light scattering but also enables the conversion of absorbed light energy into photoluminescence within the visible, near-infrared, and mid-infrared spectral regions. Under the synergistic influence of photoluminescence and the porous structure, the film achieves an exceptional reflectance of 94.5 % and an emissivity of 95.6 %. Our experimental results demonstrate a substantial enhancement in the radiative cooling performance of the composite film. During outdoor testing under an average solar irradiance of 746 W m −2 , the fabricated photonic-engineered porous composite film achieved an effective temperature reduction of 10.5 °C. Owing to its outstanding cooling capability, the photonic-engineered porous polymer film holds great promise for applications in the context of energy saving.
研究领域:
光学工程
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材料科学
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能源科学
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纳米光子学
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环境科学
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热管理技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Nannan Zhou,Nan Wang,Han Wang,Huimin Xie,Yangxi Zhang,Hongrui Ao
Piezoelectric auxetic metamaterials with microstructures hold significant promise for the design of force and tactile sensors. Here, a maskless ultraviolet (UV) lithography-based optical 3D μ-printing with high-resolution, rapid prototyping, and customized fabrication is reported to prepare polyvinylidene difluoride (PVDF)-based flexible piezoelectric sensors. With customized crosslinking for the mixture of PVDF solutions, acrylate resins, and additives, these sensors feature 2D negative Poisson’s ratio (2D-NPR) metamaterial networks and 3D microgrid structures on flexible substrates, offering optimized mechanical and electrical properties. Initially, the 2D-NPR metamaterial networks demonstrate a sensitivity of 2.09 mV/°, and a signal-to-noise ratio (SNR) of 30.87 dB for detecting bending behaviors. Additionally, further mechanical designs on 3D arrayed pyramid-shaped (AP-S) sensors with microgrid structures and electronic code locks composed of this sensor array significantly enhance their versatility in detecting vector loads and gesture codes. Notably, compared to planar PVDF sensors, the performance of this 3D microgrid structure sensor has been significantly improved by 1.53-fold, with a 4.25-fold enhancement for the limits of detection. Moreover, the proposed 2D and 3D sensors provide exceptional temperature stability and hysteresis characteristics. Leveraging machine learning algorithms, these flexible piezoelectric sensors can accurately detect human rehabilitation states, marking significant progress in advanced wearable electronics.
研究领域:
材料科学
·
电子工程
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Manufacturing Processes
·
2026
·
IF 7.8
Chenyun Qi,Qin Lian,Hu Hou,Shuhao Qi,Chenbo He,Yangtao Wang,Wei Chen,Chuncheng Yang,Jiannan Li,Shuyu Xiang,Fu Wang,Dichen Li
In sectors such as aerospace and precision instruments, ceramic matrix composites are increasingly preferred for developing new lightweight high-temperature components. A critical technological challenge lies in managing their thermal expansion under high-temperature or large-temperature-difference conditions. Traditional single-material or structural approaches struggle to achieve tunable thermal expansion, while metamaterial designs based on materials with different coefficients of thermal expansion (CTE) face complex structural and manufacturing hurdles. Additive manufacturing (AM), particularly vat photopolymerization (VPP) multi-material forming technology, offers a novel pathway for fabricating high-performance tunable thermal expansion metamaterials. This research introduces a methodology for designing, manufacturing, and characterizing near-zero expansion metamaterials made of silicon carbide (SiC) ceramics, ideal for high-temperature or rapid thermal cycling environments. Initially, theoretical models for bending-dominated and tensile-dominated near-zero expansion metamaterials were developed based on two types of SiC-based ceramics with distinct experimental CTEs, yielding optimal theoretical CTEs of 0 ppm/K and 1.6 ppm/K, respectively. Subsequently, by employing our proposed additive manufacturing technique that combines our proprietary dual-material VPP technology with liquid silicon infiltration (LSI) sintering, both metamaterials were precisely produced. High-temperature digital image correlation (DIC) measurements showed that the bending-dominated metamaterial exhibited an effective CTE of 0.76–0.96 ppm/K over the investigated temperature range. In addition, a representative high-temperature DIC measurement of the stretching-dominated metamaterial from 20 °C to 400 °C yielded an effective CTE of 1.53 ppm/K, close to the theoretical value of 1.6 ppm/K. This result demonstrates the near-zero thermal expansion can be programmed into SiC-based ceramic metamaterials through the coupled design of constituent materials, lattice architecture, and deformation mechanism and validates the feasibility of our VPP additive manufacturing with LSI sintering strategy. This study offers solutions for structural design and additive manufacturing to tailor the performance of high-temperature-stable metamaterials, providing valuable insights for developing lightweight, precisely controllable materials for extreme environmental applications.
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DOI
高影响因子
危险品化学品经营许可证（带存储）