PROGRESS IN ORGANIC COATINGS
·
2024
·
IF 6.5
Ziqing Jiang,Hao Zhang,Di Gao,Xinbo Jiang,Yan Zhang,Yihao Yu,Dongming Qi,Jianming Wang,Guangyong Zheng
Due to electronic product miniaturization and acceleration, electromagnetic radiation and thermal accumulation issues are prominent, posing risks to nearby devices and individuals. Developing thin polymer films to block electromagnetic radiation and prevent fires is crucial for smaller, faster electronics. In this study, we successfully fabricated a unique self-supporting ultra-thin sandwich-structured film named ANFs-PVA/AgNWs (APAg), which exhibited exceptional performance in both electromagnetic interference (EMI) shielding and flame retardancy. The introduction of inner AgNWs layer resulted in significant EMI shielding effectiveness (SE) at X-band frequencies, achieving an impressive 47.01 dB with a loading of only 0.10 mg/cm 2 , effectively blocking 99.99 % of electromagnetic waves (EMWs). The ANFs-PVA layers were adopted as the flexible outer layer, endowing the films with excellent flame retardance and good mechanical support due to the high heat resistance of aramid nanofibers (ANFs) as well as the strong hydrogen bonding interaction between ANFs and PVA. The film demonstrated self-extinguishing behavior in vertical burning tests, achieving a flame-retardant rating of V-0. Furthermore, the sandwich structure provides high durability for the EMI shielding performance of the films under different conditions. This study presents a novel approach for fabricating high-performance polymer-based EMI shielding films that hold great potential for applications in electronics and communication technologies.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
Advanced Science
·
2024
·Vol. 11
·期 40
·2406706
·
IF 14.3
Chuqi Li,Zhiyuan Tan,Xiaohu Shi,Dekui Song,Yan Zhao,Yan Zhang,Zihan Zhao,Weifeng Zhang,Jiongyang Qi,Yifang Wang,Xin Wang,Zhenquan Tan,Nan Liu
Electronic tattoo, capable of imperceivably acquiring bio-electrical signals from the body, is broadly applied in healthcare and human-machine interface. Tattoo substrate, the foundation of electronic tattoo, is expected to be mechanically mimetic to skin, adhesive, and breathable, and yet remains highly challenging to achieve. Herein, the study mimics human skin and design a breathable, adhesive, and mechanically skin-like super tattoo substrate based on an ultra-thin film (≈2 µm). Similar to skin, super tattoo demonstrates strain-adaptive stiffening properties with high tear energy (5.4 kJ·m −2 ) and toughness (1.3 MJ·m −3 ). Superior to skin, it exhibits high adhesion, ionic conductivity, and permeability. A variety of conductive electrodes can be processed on it, showing the universality toward an ideal platform for electronic tattoo with stable and low contact impedance. Super tattoo-based electrodes can imperceivably and accurately monitor weak electromyography (EMG) of swallowing on the junction, providing effective guidance for rehabilitation training of dysphagia.
研究领域:
生物医学工程
·
材料科学
·
康复医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RARE METALS
·
2024
·Vol. 44
·期 3
·1813-1823
·
IF 9.6
Sun Xi-Di,Li Hao,Yu Hui-Wen,Guo Xin,Wang Fan-Yu,Zhang Jia-Han,Wu Jing,Shi Yi,Pan Li-Jia
Localized manipulation of light interference and phase through surface microstructures provides new viable technologies for applications such as anti-counterfeiting, camouflage, high-density optical storage and display. However, the single-color rendering mechanism and the material’s intrinsic properties, such as hydrophilicity, low hardness and low melting point, limit the range of applications. In this paper, we propose a structural color based on ultrathin ZrO 2 thin films, which presents a visible full-spectrum color display. The structural color coating has ultrahigh flame retardancy, super UV resistance, super surface hardness and resistance to acid and alkali corrosion. The use of two different color development mechanisms realizes the hiding of the quick response (QR) code in visible light. The modified film exhibits superhydrophobic properties, unique anti-icing and self-cleaning properties, and shows the material’s potential for camouflage, anti-counterfeiting, military, marine and aerospace applications. Graphical
研究领域:
材料科学
·
光学工程
·
表面科学
·
功能材料
·
纳米技术
·
仿生学
✓ 已验证
DOI
高影响因子
Advanced Optical Materials
·
2022
·Vol. 10
·期 20
·2200865
·
IF 10.05
Kai Han,Jiance Jin,Binbin Su,Jianwei Qiao,Zhiguo Xia
Metal clusters with color-tunable radioluminescence have attracted growing attention as X-ray detection materials. However, they are generally less scintillation-efficient due to the coexistence of multiple exciton recombination centers. Herein, two new zero-dimensional copper(I)-based clusters (DIET) 3 Cu 3 X 3 (DIET = 1,3-Diethyl-2-thiourea, X = Cl, Br) are designed, which support the single channel photon emission (Cu cluster centered, CC) to enhance the scintillation performance. Those DIET ligands (L) anchoring with copper(I) ions not only generate direct Cu L bonds, but also form a disorder [Cu 3 X 3 ] cluster, which results in the intense X-ray absorption. (DIET) 3 Cu 3 Br 3 with low halogen electronegativity further weakens halogen-to-ligand charge transfer (XLCT) emission, enabling enhanced quantum efficiency (≈69%) and scintillation performance comparable to commercially available Lu 3 Al 5 O 12 :Ce. Moreover, the flexible thin film counterpart demonstrates legible X-ray imaging with high spatial resolution of 11.71 lp mm −1 . This study provides a feasible design principle to discover new metal cluster-based scintillators and to further expand their radiation detection applications.
研究领域:
材料科学
·
辐射探测
✓ 已验证
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Wenyong Yang,Miaomiao Jia,Wei Shao,Zhen Chen,Jiajia He,Qingyun Wu,Panpan Zhang,Ming Xue,Yi Li
There is an increasing demand for advanced membranes that exhibit both high perm-selectivity and good stability in organic solvents , particularly for organic solvent nanofiltration (OSN). Traditional methods of synthesizing thin films using conventional interfacial polymerization (CIP) have been limited by the use of water-soluble monomers , which has hindered the development of high-performance membranes. To address this issue, a new method called organic-organic interfacial polymerization (OOIP) has been proposed. This method allows for the use of aromatic amines that are not water-soluble in the fabrication of ultrathin polyamide (PA) (<40 nm) thin film composite (TFC) membranes. By investigating five different organic solvents (tetrahydrofuran, acetone, N , N -dimethylformamide, N , N -dimethylacetamide, dimethyl sulfoxide) with varying water content as the organic phase for a water-insoluble benzidine monomer, two diffusion models of monomers were identified that resulted in different membrane structures and degrees of network crosslinking. The ultrathin PA membranes produced using tetrahydrofuran-H 2 O and N , N -dimethylformamide-H 2 O, along with solvent activation, demonstrated high methanol permeances of 11.4 L m −2 h −1 bar −1 and 6.0 L m −2 h −1 bar −1 , respectively, while maintaining exceptional rejections of over 99.0 % for small molecules with molecular weights greater than 452 g mol −1 . The OOIP method is scalable and reproducible, making it suitable for large-scale membrane production. This innovative approach shows great potential for advancing OSN technology and providing efficient and cost-effective separation solutions for various industries.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
FOOD CONTROL
·
2011
·
IF 2.812
Jianwei Dong,Na Gao,Yuan Peng,Chun Guo,Zhiqiang Lv,Ying Wang,Caihong Zhou,Baoan Ning,Ming Liu,Zhixian Gao
A surface plasmon resonance (SPR) sensor that uses molecularly imprinted polymer (MIP) ultrathin film as sensing material was developed for detecting profenofos in tap water . The MIP ultrathin film was anchored on a gold chip by surface-initiated radical polymerization . The gold surface was first modified by 11-mercaptoundecanoic acid to form a self-assembled monolayer (SAM). To easily graft 2,2-azobis (2-amidinopropane) hydrochloride onto the SAM, the carboxyl of SAM was activated using 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride and N -hydroxysuccinimide. Then, the MIP film was synthesized by thermal-initiated polymerization using methacrylic acid as functional monomer and trimethylolpropane trimethacrylate as cross-linker. On the basis of this principle, two methods for ultrathin film preparation were studied and the most suitable technique was adopted. The prepared ultrathin film was characterized by atomic force microscopy . The MIP-SPR sensor was used to detect profenofos in tap water spiked with 0.001–0.1 μg mL −1 of the insecticide. The sensor showed high sensitivity, selectivity and good stability. The recoveries and repeatability (RSD, n = 4) of the sensor were 89.81–100.99% and 3.69–5.76%, respectively, while the detection limit based on a signal-to-noise ratio of 3 (S/N = 3) was 3.6 × 10 −4 μg mL −1 .
研究领域:
分析化学
·
环境科学
✓ 已验证
DOI
高影响因子
Surface Topography-Metrology and Properties
·
2025
·Vol. 13
·期 1
·015001
·
IF 2.4
Meiru Huang,Luli Shen,Yuying Yin,Luqi Liu,Guiping Zhou,Gang Wang,Zhixiang Zeng,Fuliang Ma
Intelligent, integrated, and environmentally sustainable electronic products have become a major trend, making the protection of electronic products a top priority. Low surface energy organosiloxane polymer films are very attractive for electronic protection, but their high porosity is not conducive to the protection of electronic devices. To solve this problem, an ultra-thin 2,4,6,8-tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane polymer film (p-V4D4) with very low porosity was deposited on a copper alloy by PECVD self-crosslinking. Compared with triethoxyvinylsilane polymer film (p-VTES) and divinyltetramethyldisiloxane polymer film (p-DVTMS), the p-V4D4 has more polymerization sites, higher cross-linking density, and lower porosity. Benefiting from the synergistic effect of good hydrophobicity and low porosity structure, the p-V4D4 offers 99.99% corrosion suppression efficiency, 48 h of salt spray corrosion resistance, and up to 23 days of immersion in 3.5 wt% NaCl. Moreover, the dense structure gives it good mechanical stability and low dielectric properties. These findings provide a new pathway for synthesizing films with efficient anti-corrosion properties and have potential application prospects in electronic protection and microelectronics.
研究领域:
材料科学
·
电子工程
·
表面科学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Yeqing Xu,Xin Jing,Peiyong Feng,Maxwell Fordjour Antwi-Afari,Yuejun Liu,Fuxiang Liu,Shitao Li,Hao-Yang Mi
Ionogels have emerged as highly promising materials for flexible electronic skin (e-skin) due to their exceptional electrical conductivity, high stability, and biocompatibility. Nevertheless, reconciling breathability with skin conformability while maintaining mechanical integrity remains a critical challenge in the development of ionogels. Herein, a hydrogen bonding and ion-dipole synergy strategy is proposed to prepare a nanonet-reinforced ultrathin ionogel film (UIF) with a thickness of only 12 µm, yet exhibiting outstanding multifunctional performance, including a remarkable sensitivity (gauge factor of 2.37), outstanding environmental resilience (−40 to 60 °C), an extensive strain response range (0–483%), and exceptional fatigue resistance. Furthermore, its superior gas permeability (2464.4 g·m −1 ·day −1 ) significantly enhances epidermal breathability, addressing a key limitation of conventional wearable materials. Moreover, when integrated into flexible wearable devices, the UIF ensures optimal skin adherence and user comfort, setting a new benchmark for wearable technology. By leveraging a supervised machine learning algorithm, such as an artificial neural network (ANN), the system achieves an impressive 96.6% accuracy in real-time analysis of human knee motion signals, enabling continuous, high-precision motion tracking. This advanced ionogel not only paves the way for next-generation flexible e-skins with high conformability but also holds great potential in smart medicine and human-machine interaction.
研究领域:
生物医学工程
·
柔性电子学
·
智能材料
·
转化医学
·
人机交互
·
运动监测
✓ 已验证
产品关联
DOI
高影响因子
PhotoniX
·
2025
·Vol. 6
·期 1
·1-16
·
IF 19.1
Zhu Qian,Chen Yinggang,Wang Tong,Lu Hua,Wu Limin,Gu Min,Zhang Yinan
Passive daytime radiative cooling (PDRC) is a recently developed zero-carbon cooling technology that harnesses the coldness of the universe as an inexhaustible and environmentally sustainable energy source, holding immense promise for revolutionizing the global energy landscape. Photonic structures with tailored optical responses across solar and thermal wavelengths play pivotal roles in daytime radiative cooling. However, the design of spectrally selective structures with simultaneously high performance, scalable manufacturability and reduced material usage toward real-world deployment remains a significant challenge. Here we report scalable, ultrathin and high-performance selective radiative cooling photonic films by microsphere-polymer coupled metasurface (M-PCM), which consists of subwavelength-thick (~ 8 µm) polymeric elastomer embedded with a monolayer hexagonally close-packed microsphere array on the top and an optically thick reflector underneath via an inexpensive and scalable-manufactured strategy. By controlling the light coupling between the glass sphere and polymers, Mie resonances are spectrally selective excited or suppressed leading to a strong infrared emissivity of 0.96 within 8–13 µm and a large spectral selectivity of 1.50, with simultaneously a high solar reflectance of 0.96, surpassing the state-of-the-art selective PDRC designs. More critically, the M-PCM film yields a maximum temperature drop of 7.1 °C in a represented rooftop test. Promisingly, the mass-produced yet economically viable ultrathin flexible M-PCM films are portable to be integrated into diverse realistic scenarios, such as building exteriors, automobile bodies and water tanks, which could potentially contribute to the global energy conservation and carbon emission reduction.
研究领域:
光学工程
·
材料科学
·
纳米光子学
·
能源材料
·
环境可持续技术
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2025
·Vol. 37
·期 43
·e09037
·
IF 26.8
Yanchang Zhou,Ruiqing Cheng,Shuyang Yuan,Xiaoqiang Feng,Yushan Zhu,Sheng Jiang,Hao Wang,Lei Yin,Yao Wen,Wei Liu,Jun He
2D magnetic materials offer significant potential for advanced spintronics, but their practical implementation is hindered by fundamental limitations such as low Curie temperatures and the current inability to achieve scalable, large-area synthesis. Herein, a significant breakthrough in the centimeter-scale epitaxial growth of ultrathin single-crystalline magnetic ferrite films, including cobalt ferrite, manganese ferrite, and nickel ferrite is reported. By leveraging symmetry-matching-induced energy splitting between antiparallel orientations and developing a precisely engineered nucleation timing strategy to amplify synergistic coupling, unidirectional epitaxial growth with seamless domain coalescence is achieved. Comprehensive macro- and micro-characterizations confirmed the single-crystalline nature and high quality. Vibrating sample magnetometry measurements reveal robust ferrimagnetism persisting up to 730 K, while magneto-optical Kerr effect microscopy visualized sharp uniform single-domain switching behavior. Interestingly, two potential strategies have been explored for heteroepitaxial integration of CFO thin films with engineered substrates. This work establishes a scalable and viable synthesis route for 2D magnetic oxides, marking a pivotal step toward their practical deployment in high-performance spintronic and quantum devices.
研究领域:
材料科学
·
凝聚态物理
·
自旋电子学
·
纳米技术
·
薄膜生长
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）