Advanced Science
·
2024
·
IF 14.3
Weijun Zhao,Jingwen Dong,Zhaoyang Li,Bing Zhou,Chuntai Liu,Yuezhan Feng
Transparent electromagnetic interference (EMI) shielding is highly desired in specific visual scenes, but the challenge remains in balancing their EMI shielding effectiveness (SE) and optical transmittance. Herein, this study proposed a directionally aligned silver nanowire (AgNW) network construction strategy to address the requirement of high EMI SE and satisfactory light transmittance using a rotation spraying technique. The orientation distribution of AgNW is induced by centrifugal inertia force generated by a high-speed rotating roller, which overcomes the issue of high contact resistance in random networks and achieves high conductivity even at low AgNW network density. Thus, the obtained transparent conductive film achieved a high light transmittance of 72.9% combined with a low sheet resistance of 4.5 Ω sq −1 and a desirable EMI SE value of 35.2 dB at X band, 38.9 dB in the K-band, with the highest SE of 43.4 dB at 20.4 GHz. Simultaneously, the excellent conductivity endowed the film with outstanding Joule heating performance and defogging/deicing ability, ensuring the visual transparency of windows when shielding electromagnetic waves. Hence, this research presents a highly effective strategy for constructing an aligned AgNW network, offering a promising solution for enhancing the performance of optical-electronic devices.
研究领域:
材料科学
·
电子工程
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DOI
PubMed
高影响因子
ADVANCED ENGINEERING MATERIALS
·
2025
·
IF 3.3
Ruijie Yao,Qiqi Feng,Wenxiu Wu,Xiaoxue Xu,Yixuan Zhang,Wei Li,Minfang Chen
Transparent conductive films (TCFs) are becoming increasingly important in the development of efficient and stretchable optoelectronic devices, where the key raw material imparting these excellent properties is silver nanowires (AgNWs). Herein, using copper chloride as a reactive additive, AgNWs with a higher aspect ratio, improved uniformity, and high purity are synthesized. Using the AgNWs as conductive materials and polyurethane (PU) as the transparent substrate, AgNWs-PU TCFs with outstanding optoelectronic properties are prepared using the pumping-filtration transfer method. The TCFs’ sheet resistance is as low as 14.9 Ω sq −1 and still shows good conductivity after 4000 times bending, transmittance at λ = 550 nm is 83%, and the optoelectronic properties remain unchanged until 140 °C, indicating their excellent heat temperature resistance. Furthermore, AgNWs-PU TCFs demonstrate a smaller contact angle, lower surface roughness, and greater uniformity than that of commercial indium tin oxide (ITO), even during the electrodeposition. The deposition of Prussian blue on these substrates evidences these advantageous properties, providing greater possibilities for developing flexible color-changing devices, especially electrochromic glass.
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Haoyang Wang,De-Jing Li,Jing Ren,Fan Yang,Shujun Guo,Jun Wang,Cheng Zhang,Bingwen Zhang,Hongfei Liu,Yang Zhang
The selective separation and detection of benzene from toluene remains a critical challenge due to their structural similarity and the toxicity of benzene. In this work, we develop a novel composite substrate, PIZA-AgNW, consisting of a metal-organic framework (MOF), silver nanowires (AgNWs), and filter paper, fabricated via liquid-phase epitaxy (LPE). This substrate enables highly selective and real-time detection of benzene from toluene using tandem surface-enhanced Raman spectroscopy (SERS) and quartz crystal microbalance (QCM) analysis. The LPE method affords precise control of MOF thickness and pore structure, enhancing molecular selectivity for Raman detection. By correlating Raman intensity with QCM-derived mass changes, we achieve real-time monitoring of adsorption/desorption dynamics and quantify both equilibrium and nonequilibrium separation factors. Notably, a high equilibrium separation factor ( αₑ ) of 134 was obtained for a 1:1 benzene/toluene mixture. This work demonstrates a practical strategy for integrating structural selectivity with real-time sensing and offers broad potential for the dynamic monitoring of volatile organic compounds (VOCs) in environmental and industrial applications.
研究领域:
分析化学
·
材料科学
·
环境监测
·
传感器与检测技术
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产品关联
DOI
高影响因子
Nanoscale
·
2024
·
IF 5.8
Shoujie Shen,Qiyu Wu,Xingchao Chen,Jia Li,Xuanting Zhao,Chuao Ma,Chan Liu,Hongliang Liu
Stretchable transparent electrodes (STEs) composed of highly conductive silver nanowires (AgNWs) and mechanically stretchable polydimethylsiloxane (PDMS) are compelling materials for the development of flexible electronic devices. So far, the fabrication processes of the AgNWs/PDMS-based STEs suffer from low efficiency on a small scale, apart from the limitations and challenges posed by the continuous fabrication processes that are required to exploit these fascinating materials in an industrial context. Here, we have addressed these limitations by using gradient PDMS with a tunable modulus as the stretchable substrate, on which ionic liquid-mediated aligned semi-embedded AgNWs are formed via a scalable superwettability-induced transfer strategy. We have demonstrated the importance of the gradient PDMS in achieving STEs with improved optoelectrical properties, mechanical stretchability, and long-term stability. Furthermore, we have shown the applications of the designed STEs for electro-heating and electroluminescent devices. This promising fabrication process is an industrially relevant alternative to current processes that are either complicated and less effective (for example, stamping transfer) or not compatible with continuous, large-scale production (for example, spin-coating or electrospinning).
研究领域:
材料科学
·
柔性电子器件
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产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 37
·2301587
·
IF 19
Yanli Wang,Wenjing Qin,Min Yang,Zhenhao Tian,Wenjin Guo,Jinkun Sun,Xiang Zhou,Bin Fei,Baigang An,Ruimin Sun,Shougen Yin,Zunfeng Liu
Flexible wearable strain sensors have received extensive attention in human–computer interaction, soft robotics, and human health monitoring. Despite significant efforts in developing stretchable electronic materials and structures, developing flexible strain sensors with stable interfaces and low hysteresis remains a challenge. Herein, Ti 3 C 2 T x MXene/AgNWs/liquid metal strain sensors (MAL strain sensor) with self-healing function are developed by exploiting the strong interactions between Ti 3 C 2 T x MXene/AgNWs/LM and the disulfide and hydrogen bonds inside the self-healing poly(dimethylsiloxane) elastomers. AgNWs lap the Ti 3 C 2 T x MXene sheets, and the LM acts as a bridge to increase the lap between Ti 3 C 2 T x MXene and AgNWs, thereby improving the interface interaction between them and reducing hysteresis. The MAL strain sensor can simultaneously achieve high sensitivity (gauge factor for up to 3.22), high linearity ( R 2 = 0.98157), a wide range of detection (e.g., 1%–300%), a fast response time (145 ms), excellent repeatability, and stability.In addition, the MAL strain sensor before and after self-healing is combined with a small fish and an electrothermally driven soft robot, respectively, allowing real-time monitoring of the swinging tail of the small fish and the crawling of the soft robot by resistance changes.
研究领域:
材料科学
·
生物医学工程
·
柔性电子
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产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2019
·Vol. 7
·期 26
·15913-15923
·
IF 10.733
Jun-Hong Pu,Xing Zhao,Xiang-Jun Zha,Lu Bai,Kai Ke,Rui-Ying Bao,Zheng-Ying Liu,Ming-Bo Yang,Wei Yang
The development of wearable healthcare electronics has created higher demands on both the sensitivity and stretchability of flexible sensors. As it is generally difficult to obtain a trade-off between sensitivity and stretchability, the fabrication of strain sensors with both a wide operating range (≥100%) and high sensitivity (GF ≥ 100) remains a great challenge. Here, we propose for the first time a strategy based on the consolidation of two basic but seemingly paradoxical sensing mechanisms, i.e., slippage and crack propagation mechanisms, to greatly enhance the sensitivity of stretchable strain sensors. Based on stretchable polyurethane (PU) fibers, which can be easily woven into conventional fabrics to produce wearable devices, we present a multilayer sensing structured fiber sensor fabricated by layer-by-layer self-assembly of sliver nanowire (AgNW)/waterborne polyurethane (WPU) layers and MXene layers. The sensor simultaneously exhibits an ultrahigh sensitivity (GF = 1.6 × 107) and a wide operating range (up to 100%), as well as great reliability and stability (1000 cycles) and fast response (344 ms) and relaxation (344 ms). Moreover, smart fabrics were fabricated by integrating fiber strain sensors into different clothes and a prototype body posture monitoring, analysis, and correction system was presented for healthcare applications. Our work not only breaks down the technological wall between high sensitivity and high stretchability of strain sensors, but also shows the great potential applications of wearable, comfortable, and non-intrusive electronics for real-time health monitoring.
研究领域:
柔性电子学
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可穿戴传感器
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纳米材料
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医疗健康技术
·
智能纺织品
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DOI
高影响因子
NANOTECHNOLOGY
·
2020
·Vol. 32
·期 1
·015708
·
IF 3.551
Ze-Ru Zhu,Wenming Geng,Qingxia Zhu,Anita Sagadevan Ethiraj,Tao Wang,Li-Chao Jing,Yu-Jie Ning,Yi Tian,Wen-Hao Geng,Lei Wu,Hong-Zhang Geng
In this paper, we used tannic acid (TA) functionalized carbon nanotubes (TCNTs), and silver nanowires (AgNWs) to construct a new type of transparent conductive film (TCF) with a double-layered conductive network structure. The hybrid film exhibits excellent light transmittance, high electrical conductivity, ultra-flexibility, and strong adhesion. These outstanding performances benefit from the filling and adhesion of hydrophilic TCNT layers to the AgNW networks. Besides, we introduced the post-treatment process of mechanical pressing and covering polymer conductive polymer PEDOT:PSS, which obtained three layers of TCNT/AgNW/PEDOT hybrid film and greatly improved the comprehensive properties. The hybrid film can reach a sheet resistance of 9.2 Ω sq−1 with a transmittance of 83.4% at 550 nm wavelength, and a low root mean square (RMS) roughness (approximately 3.8 nm). After 10 000 bends and tape testing, the conductivity and transmittance of the hybrid film remain stable. The resistance of the film has no significant degradation after 14 d of exposure to high temperature of 85 °C and humidity of 85%, indicating excellent stability. The organic light-emitting diodes (OLEDs) with TCNT/AgNW/PEDOT hybrid film as anode exhibit high current density and luminosity, confirming this process has considerable potential application in photovoltaic devices.
研究领域:
材料科学
·
电子工程
·
光学
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产品关联
DOI
PubMed
高影响因子
Materials Today Chemistry
·
2024
·
IF 6.7
Shihong Lin,Bingyan Chen,Ying Xu,Zhiyu Li,Yuanrong Liao,Jun Wang,Peiyan Yu,Yang Zhang
Synergistic surface-enhanced Raman spectroscopy (SERS) substrates, leveraging the combined strengths of electromagnetic enhancement (EM) and chemical enhancement (CM), have been extensively explored in the literature. In this study, we introduce a distinctive approach to fabricating core@shell structures, specifically employing silver nanowire @ zeolite imidazole framework-8 (AgNW@ZIF-8) as synergistic SERS substrates. Notably, these substrates offer meticulous control over shell thickness through a straightforward post-synthesis procedure. Utilizing Ag nanowires as the plasmonic core, selected for their broader localized surface plasmon resonance (LSPR) absorption range compared to nanoparticles , we encapsulate them within ZIF-8, a metal-organic framework (MOF) recognized for its proficient charge transfer (CT) properties. Our investigation encompasses the SERS performance across various Raman-active molecules, considering their diverse sizes and distinct frontier molecular orbitals (FMO) energy levels. Additionally, we systematically explore the influence of alterations in shell thickness on SERS outcomes and scrutinize the impact of probe orientation. This comprehensive study not only advances the understanding of synergistic effects intrinsic to MOFs-metal SERS substrates but also provides valuable insights for the rational design of highly sensitive substrates tailored for practical applications.
研究领域:
材料科学
·
光谱学
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产品关联
DOI
高影响因子
Nanoscale
·
2021
·Vol. 13
·期 4
·2378-2388
·
IF 7.79
Bing Zhou,Qingtao Li,Penghui Xu,Yuezhan Feng,Jianmin Ma,Chuntai Liu,Changyu Shen
Flexible cellulose-based conductive films reveal high potential in electromagnetic interference (EMI) shielding and thermal management applications. However, the high contact electrical/thermal resistance in these films is still a challenge to face. In this work, an asymmetric sandwich structural film containing a cellulose nanofiber (CNF) skin-layer and self-supported Ti3C2Tx MXene and silver nanowire (AgNW) core-layers (CNF@MXene@AgNW film) was fabricated through layer-by-layer assembled vacuum-assisted filtration. The unique sandwich structure not only provides a highly conductive network by the highly oriented and self-supported conductive core-layers, but also maintains its structural integrity by ambilateral CNF layers. As a result, the CNF@MXene@AgNW film reveals a strong tensile strength of 118 MPa and a toughness of 4.75 MJ m−3, super-flexibility (minimum bending radius of ∼85 μm), a high electrical conductivity (37 378.2 S m−1), effective EMI shield effectiveness (SE, 55.9 dB), outstanding specific SE (SSE/t, 10 647.6 dB cm2 g−1) and high in-plane thermal conductivity (15.53 W m−1 K−1), simultaneously. More interestingly, the sandwich film also reveals outstanding solar-thermal energy conversion ability, which guarantees its normal function in extremely cold environment. The unique asymmetric sandwich structure provides a new strategy for designing and preparing high-performance EMI shielding and thermal conductive films.
研究领域:
材料科学
·
电子工程
·
热能工程
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DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Leyi Fang,Xiao-Tong Pan,Kang Liu,Dechen Jiang,Deju Ye,Li-Na Ji,Kang Wang,Xing-Hua Xia
The simultaneous and accurate detection of intracellular pH (pHi) and extracellular pH (pHe) is essential for studying the complex physiological activities of cancer cells and exploring pH-related therapeutic mechanisms. Here, we developed a super-long silver nanowire-based surface-enhanced Raman scattering (SERS) detection strategy for simultaneous sensing of pHi and pHe. A surface-roughened silver nanowire (AgNW) with a high aspect ratio is prepared at a nanoelectrode tip using a Cu-mediated oxidation process, which is then modified by pH-sensitive 4-mercaptobenzoic acid (4-MBA) to form 4-MBA@AgNW as a pH sensing probe. With the assistance of a 4D microcontroller, 4-MBA@AgNW is efficient in simultaneously detecting pHi and pHe in both 2D and 3D culture cancer cells by SERS, with minimal invasiveness, high sensitivity, and spatial resolution. Further investigation proves that the surface-roughened single AgNW can also be used in monitoring the dynamic variation of pHi and pHe of cancer cells upon stimulation with anticancer drugs or under a hypoxic environment.
研究领域:
纳米技术
·
生物医学工程
·
癌症研究
·
分析化学
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产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Zhiqiang Ma,Weibin Jia,Jing Zhang,Xingdao He,Shiyuan Liu,Mohamed Elhousseini Hilal,Xiang Zhou,Zhengbao Yang,Zonggang Chen,Peng Shi,Bee Luan Khoo
Vascular grafts, widely utilized in managing cardiovascular diseases (CVD), are susceptible to postoperative complications. Recent strides in intelligent vascular grafts leveraging flexible bioelectronics enable hemodynamic and vascular health monitoring. However, their practical application faces challenges, notably biomechanical compatibility and endothelialization. Here, an all-in-one piezoelectric vascular graft (PVG) constructed by encapsulating a polyvinylidene fluoride (PVDF) nanofiber mat with patterned silver nanowire (AgNW) electrodes between two layers of polycaprolactone (PCL) nanofiber mats is presented. The meticulously optimized PVG, featuring PVDF and PCL nanofibers with average diameters of ≈950 and 250 nm, respectively, showcases remarkable endothelialization and mechanical performance akin to native blood vessels. The exquisite piezoelectric properties of PVDF nanofibers imbue PVG with outstanding mechanical sensing capabilities, boasting a sensitivity of 11 mV kPa −1 and stability exceeding 50 000 cycles, facilitating precise hemodynamic monitoring. Notably, artificial artery model tests demonstrate PVG's ability to diagnose vascular health status accurately based on detected hemodynamic data. Furthermore, the developed PVG exhibits nontoxicity, good hemocompatibility (hemolytic ratio < 1%), and histocompatibility. This pioneering technology, validated through ex vivo and in vivo experiments, represents a significant stride in precise vascular health management, unlocking diverse potential applications.
研究领域:
生物医学工程
·
材料科学
·
心血管医学
·
纳米技术
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）