ACS Applied Materials & Interfaces
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2022
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IF 10.383
Ziran Du,Gaoyan Zhang,Kun Chen,Cheng Zhou,Xiaoshuai Zhu,Yuxiang Zhang,Kang Chen,Hao-Yang Mi,Yaming Wang,Chuntai Liu,Changyu Shen
Proliferation in telecommunications and integrated/intelligent devices entails an intense concern for electromagnetic interference (EMI) shielding and versatility. It remains an activated passion to launch infusive EMI shielding materials integrated with self-powered peculiarities. Herein, a double-layered MXene/polylactic acid (PLA) fabric resonance cavity (D-MPF-RC) comprised of two MXene/PLA fabrics (MPFs) with alternating MXene and PLA structures that are separated by a poly(tetrafluoroethylene) (PTFE) frame is developed. The D-MPF-RC achieved 48.5 and 74.8% improvement in SET and SEA, and 24.6% reduction in SER by introducing the double-layered structure and increasing the resonance cavity (RC) distance without varying the material composition and cost. A high shielding efficiency (SE) of 92.3 dB was obtained at an RC distance of 6 mm owing to the synergetic effects of multiple reflections and destructive EM wave interference. The tribopolarity difference between PLA and MXene and the RC structure made the D-MPF-RC a readily available triboelectric nanogenerator (TENG) that could convert mechanical energy into electricity. The D-MPF-RC TENG demonstrated an open-circuit voltage of 88 V and achieved a peak power density of 35.4 mW m–2 on a 6.6 MΩ external resistor, which made it possible to charge capacitors and serve as a self-powered tactile sensor. This report offers new insights into the design of high-performance EMI shielding shields with a resonance cavity and proposes a feasible pathway to integrate them with energy harvesting capabilities.
研究领域:
材料科学
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电子工程
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能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COMPOSITES PART B-ENGINEERING
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2025
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IF 14.2
Liting He,Lulu Song,Jing Fang,Hao Li,Ming Luo,Qixiu Cheng,Xiaoang Liu
The demand for advanced materials with low-frequency sound absorption, pressure resistance, and thermal insulation is increasing, particularly in aerospace, high-speed rail, and luxury automotive sectors. However, the functional limitations of current materials hinder their broader application in high-end industries. To solve this problem, this study combines a hierarchical porous biomass aerogel with a resonant cavity to create a Helmholtz resonance sound absorption structure. This design aims at achieving multiple functions, including low-frequency sound absorption, heat insulation, and pressure resistance capability. The sound absorption structure is composed of porous biomass aerogel instead of the traditional perforated plate and cavity. Among them, the hierarchical porous biomass aerogel is obtained from delignified kapok fiber and activated carbon crosslinked by gelatin. The influence of activated carbon concentration, resonant cavity depth and aerogel perforation rate on the low-frequency sound absorption effect in this aerogel is explored. The sound absorption structure demonstrates excellent low-frequency sound absorption performance. Additionally, the aerogel exhibits thin (the thickness of the aerogel material is 10 mm, the sound absorption structure is 30 mm), high compressive strength, and low thermal conductivity. This study provides a new idea for the preparation of multifunctional low-frequency sound absorption materials.
研究领域:
材料科学
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声学工程
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产品关联
DOI
高影响因子
OPTICS EXPRESS
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2025
·Vol. 33
·期 9
·18686-18697
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IF 3.3
Shiqing Zhao,Shiqing Zhao,Shiqing Zhao,Xinhao Shi,Luhui Feng,Jiarui Chen,Xinli Cheng,Xinli Cheng,Cheng Zhang,Cheng Zhang,Yanhua Liu,Yanhua Liu
Electrochromic devices (ECDs) that realize active transmittance or reflectance modulation under reversible electrical stimuli have triggered intense research interest and consequently plenty of practical applications. However, the majority of inorganic electrochromic materials have limited color switching versatility. To solve the drawbacks, we introduce a WO3-based ECD integrated with a thin-film resonance cavity composed of reflection (metallic tungsten, W), dielectric (WO3), and air layers, which endows the device with outstanding color modulability across the full visible spectrum region. By adjusting the thickness of WO3 (113 - 236 nm) film and its refractive index (n) and extinction coefficient (k) through applying electrical bias ranging from -1.5 to 0.5 V, the ECDs exhibit abundant vivid colors, including yellow, green, blue, and magenta, etc. The strategy of thin-film resonance cavity brings improved electrochromic properties in terms of fast response (3.3 s for coloration and 2.9 s for bleaching), high coloration efficiency (75.3 cm2 C−1), long chemical stability (1000 cycles retaining 81% of optical modulation), and remarkable spectrum peak migration (∼181 nm). More importantly, a polyethylene terephthalate (PET) substrate was introduced in the devices to demonstrate the suitability for flexible ECDs, which can accelerate the development of flexible colorful displays in the future.
研究领域:
材料科学
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光学
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纳米技术
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电化学
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显示技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBON
·
2025
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IF 11.6
Dazhi Chen,Tian Li,Wenting Deng,Tinghao Liao,Yao Zou,Zhongqiu Guo,Fanbin Meng
Recently, the multi-components hybridization technology and heterogeneous interface design have became the effective pathway to enhance microwave absorption (MA) performance and broaden the effective absorption bandwidth (EAB). To illustrate the heterointerface polarization in the multiscale, this work introduced multi-axis co-electrospinning technology to design a type of multi-components graphene-based aerogel microspheres (GAMs) with two resonant cavities that owing multiple heterogeneous interfaces. The artificial interfaces, engineered at submillimeter scales, were constructed based on triple tangent sphere-like absorbers with differentiated electromagnetic characteristics, possessing both outstanding impedance and attenuation ability. The typical H@ZnO/C/Fe 3 O 4 GAMs-3 displayed impressive reflection loss ( RL min ) of −61.5 dB at 9.58 GHz, and simultaneously the corresponding EAB reached 6.63 GHz. Besides, the widest EAB of this composite was 8.5 GHz, remaining that the RL min values reached −36.92 dB. It revealed that synergistic interface effect in the macro-micro-nano scale could extremely improve scattering properties in the multi-shell cavity. On this basis, the group effect of layered stacked model for different types of GAMs models was explored via electromagnetic simulation, demonstrating that the macro-scale interface between different microsphere individuals could induce electromagnetic polarization. This research emphasized the significance of multi-scale heterointerface engineering in optimizing MA performance, offering new pathways for broadband MA materials.
研究领域:
材料科学
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电磁学
✓ 已验证
产品关联
DOI
高影响因子
OPTICS AND LASER TECHNOLOGY
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2023
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IF 5
Yaru Li,Weihao Liu,Runcheng Liu,Jinjuan Gao,Jingwen Feng,Shicai Xu,Zhen Li,Shouzhen Jiang,Xuejian Du
The development of portable biosensors exhibiting outstanding performance for fast and convenient detection of human glucose levels takes on critical significance to human health testing. A two-dimensional metal-organic framework (Cu-TCPP 2D MOF)-sensitized arrayed resonant cavity silver film (ARC/Ag) optical fiber surface plasmon resonance (SPR) sensor was developed in this study. The ARC/Ag 3D structure overcame weak coupling and non-uniform plasmon resonance, and the resulting strong hotspots effectively extended the sensing region. Moreover, the coated MOF is considered as a prominent SPR sensitized layer for its plasmonic property and highly ordered structure. The results of the simulations confirmed the local electric field enhancement that was attributed to the plasmonic synergistic effect of MOF with ARC/Ag. The normalized transmission spectra were collected in ethanol solutions with the refractive index (RI) of 1.340 to 1.352, and the sensitivity and the figure of merit (FOM) of the sensor were demonstrated to be increased by 73.98% and 68%, respectively. The sensor exhibited a linear response factor of 9.99 nm/(mg/mL) over a glucose concentration range of 0.1–1.2 mg/mL by covalently immobilizing glucose oxidase (GOD) on MOF. Accordingly, the proposed highly integrated and portable biosensor provides a piece of promising evidence for label-free glucose detection at point of care (POC).
研究领域:
生物医学工程
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光学
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材料科学
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传感技术
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医疗健康
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）