Materials Horizons最新文献

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One-step fabrication of high energy storage polymer films with a wide bandgap and high melting temperature induced by the fluorine effect for high temperature capacitor applications with ultra-high efficiency. 通过氟效应一步制备具有宽带隙和高熔融温度的高能量存储聚合物薄膜,用于具有超高效率的高温电容器应用。
IF 12.2 2区 材料科学
Materials Horizons Pub Date : 2024-10-28 DOI: 10.1039/d4mh01225a
Jie Xiong, Guanxiang Zhang, Shaobo Tan, Honghong Gong, Yunchuan Xie, Xiao Zhang, Zhicheng Zhang
{"title":"One-step fabrication of high energy storage polymer films with a wide bandgap and high melting temperature induced by the fluorine effect for high temperature capacitor applications with ultra-high efficiency.","authors":"Jie Xiong, Guanxiang Zhang, Shaobo Tan, Honghong Gong, Yunchuan Xie, Xiao Zhang, Zhicheng Zhang","doi":"10.1039/d4mh01225a","DOIUrl":"https://doi.org/10.1039/d4mh01225a","url":null,"abstract":"<p><p>The development of polymer dielectrics with both high energy density and low energy loss is a formidable challenge in the area of high-temperature dielectric energy storage. To address this challenge, a class of polymers (Parylene F) are designed by alternating fluorinated aromatic rings and vinyl groups in the polymer chain to confine the conjugating sequence and broaden the bandgap with the fluorine effect. The target films with desired thickness, ultra-high purity, and a wide bandgap are facilely fabricated by a one-step chemical vapor deposition (CVD) technique from monomers. The symmetric and bulky aromatic structures exhibit high crystalline performance and excellent stability at high temperature. The presence of strongly electronegative fluorine atoms effectively enhances bandgap and electron trapping capability, which effectively reduces the conduction loss as well as the possibility of breakdown at high temperatures. CVD technology avoids the post-processing film-forming process, ensuring the fabrication of thin films with high quality. These benefits allow Parylene F films to effectively store electrical energy at temperature up to 150 °C, exhibiting a record discharged energy density of 2.92 J cm<sup>-3</sup> at charge-discharge efficiency exceeding 90%. This work provides a new idea for the design and synthesis of all-organic polymer dielectric films for high temperature applications.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142491261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Highly sensitive strain sensors with ultra-low detection limit based on pre-defined serpentine cracks. 基于预定义蛇形裂纹的高灵敏度应变传感器,具有超低检测限。
IF 12.2 2区 材料科学
Materials Horizons Pub Date : 2024-10-28 DOI: 10.1039/d4mh01136h
Qingshi Meng, Tengfei Chi, Shuang Guo, Milad Razbin, Shuying Wu, Shuai He, Sensen Han, Shuhua Peng
{"title":"Highly sensitive strain sensors with ultra-low detection limit based on pre-defined serpentine cracks.","authors":"Qingshi Meng, Tengfei Chi, Shuang Guo, Milad Razbin, Shuying Wu, Shuai He, Sensen Han, Shuhua Peng","doi":"10.1039/d4mh01136h","DOIUrl":"https://doi.org/10.1039/d4mh01136h","url":null,"abstract":"<p><p>Flexible and stretchable strain sensors have garnered significant interest due to their potential applications in various fields including human health monitoring and human-machine interfaces. Previous studies have shown that strain sensors based on microcracks can exhibit both high sensitivity and a wide sensing range by manipulating the opening and closing of randomly generated cracks within conductive thin films. However, the uncontrolled nature of microcrack formation can cause a drift in the sensor's performance over time, affecting its accuracy and reliability. In this study, by pre-defining the cracks, we introduce a novel resistive strain sensor with high sensitivity, excellent linearity, an ultra-low detection limit, and robustness against off-axis deformation. The sensor operates on a simple mechanism involving the modulation of ohmic contact within intricately designed conductive serpentine curves, which are encapsulated by pre-stretched thin films. This design facilitates a high gauge factor of 495, exceptional linearity (<i>R</i><sup>2</sup> > 0.98), and an ultra-low detection threshold of 0.01% strain. Moreover, it maintains performance integrity during off-axis deformations such as bending and twisting, features that are indispensable for accurately monitoring human motion. To explore practical applications, a driving scenario was simulated where a sensor array was positioned on the driver's neck. The sensor output was analyzed using machine learning algorithms to successfully determine the presence of driver fatigue. This demonstration underlines the potential of our sensor technology in applications ranging from healthcare monitoring to wearable biomechanical systems and human-machine interfaces.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142520372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
High density lath twins lead to high thermoelectric conversion efficiency in Bi2Te3 modules. 高密度板条孪晶可提高 Bi2Te3 模块的热电转换效率。
IF 12.2 2区 材料科学
Materials Horizons Pub Date : 2024-10-28 DOI: 10.1039/d4mh00977k
Qianqian Sun, Gang Wu, Xiaojian Tan, Qiang Zhang, Zhe Guo, Qiaoyan Pan, Guoqiang Liu, Peng Sun, Jiehua Wu, Jun Jiang
{"title":"High density lath twins lead to high thermoelectric conversion efficiency in Bi<sub>2</sub>Te<sub>3</sub> modules.","authors":"Qianqian Sun, Gang Wu, Xiaojian Tan, Qiang Zhang, Zhe Guo, Qiaoyan Pan, Guoqiang Liu, Peng Sun, Jiehua Wu, Jun Jiang","doi":"10.1039/d4mh00977k","DOIUrl":"https://doi.org/10.1039/d4mh00977k","url":null,"abstract":"<p><p>Thermoelectric (TE) generators based on bismuth telluride (Bi<sub>2</sub>Te<sub>3</sub>) are recognized as a credible solution for low-grade heat harvesting. In this study, an combinative doping strategy of both the donor (Ag) and the acceptor (Ga) in Ag<sub>9</sub>GaTe<sub>6</sub> as dopants is developed to modulate the microstructure and improve the <i>ZT</i> value of p-type Bi<sub>0.4</sub>Sb<sub>1.6</sub>Te<sub>3</sub>. Specifically, the distribution of Ag and Ga in the matrix synergistically introduces multiple phonon scattering centers including lath twins, triple junction boundaries, and Sb-rich nanoprecipitates, leading to an obviously suppressed lattice thermal conductivity of 0.50 W m<sup>-1</sup> K<sup>-1</sup> at 300 K. At the same time, such unique microstructures of lath twins synergistically enhance the room-temperature power factor to 48.8 μW cm<sup>-1</sup> K<sup>-2</sup> and improve the Vickers hardness to 0.90 GPa. Consequently, a high <i>ZT</i> of 1.40 at 350 K and <i>ZT</i><sub>ave</sub> of 1.24 (300-500 K) are achieved in the Bi<sub>0.4</sub>Sb<sub>1.6</sub>Te<sub>3</sub> + 0.03 wt% Ag<sub>9</sub>GaTe<sub>6</sub> sample. Based on that, a competitive conversion efficiency of 6.5% at Δ<i>T</i> = 200 K is obtained in the constructed 17-couple TE module, which exhibits no significant change in the output property after 30 thermal cycle tests benefiting from the stable microstructure.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142491260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Research on advanced photoresponsive azobenzene hydrogels with push-pull electronic effects: a breakthrough in photoswitchable adhesive technologies. 具有推拉电子效应的先进光致伸缩性偶氮苯水凝胶的研究:光开关粘合剂技术的突破。
IF 12.2 2区 材料科学
Materials Horizons Pub Date : 2024-10-25 DOI: 10.1039/d4mh01047g
Yun-Ying Wang, Peng-Wen Chen, Yu-Hsin Chen, Mei-Yu Yeh
{"title":"Research on advanced photoresponsive azobenzene hydrogels with push-pull electronic effects: a breakthrough in photoswitchable adhesive technologies.","authors":"Yun-Ying Wang, Peng-Wen Chen, Yu-Hsin Chen, Mei-Yu Yeh","doi":"10.1039/d4mh01047g","DOIUrl":"https://doi.org/10.1039/d4mh01047g","url":null,"abstract":"<p><p>Smart materials that adapt to various stimuli, such as light, hold immense potential across many fields. Photoresponsive molecules like azobenzenes, which undergo <i>E</i>-<i>Z</i> photoisomerization when exposed to light, are particularly valuable for applications in smart coatings, light-controlled adhesives, and photoresists in semiconductors and integrated circuits. Despite advances in using azobenzene moieties for stimuli-responsive adhesives, the role of push-pull electronic effects in regulating reversible adhesion remains largely unexplored. In this study, we investigate for the first time photo-controlled hydrogel adhesives of azobenzene with different push-pull electronic groups. We synthesized the monomers 4-methoxyazobenzene acrylate (ABOMe), azobenzene acrylate (ABH), and 4-nitroazobenzene acrylate (ABNO<sub>2</sub>), and examined their effects on reversible adhesion properties. By incorporating these azobenzene monomers into acrylamide, dialdehyde-functionalized poly(ethylene glycol), and [3-(methacryloylamino)propyl]-trimethylammonium chloride, we prepared ABOMe, ABH, and ABNO<sub>2</sub> ionic hydrogels. Our research findings demonstrate that only the ABOMe ionic hydrogel exhibits reversible adhesion. This is due to its distinct transition state mechanism compared to ABH and ABNO<sub>2</sub>, which enables efficient <i>E</i>-<i>Z</i> photoisomerization and drives its reversible adhesion properties. Notably, the ABOMe ionic hydrogel reveals an outstanding skin adhesion strength of 360.7 ± 10.1 kPa, surpassing values reported in current literature. This exceptional adhesion is attributed to Schiff base reactions, monopole-quadrupole interactions, π-π interactions, and hydrogen bonding with skin amino acids. Additionally, the ABOMe hydrogel exhibits excellent reversible self-healing capabilities, significantly enhancing its potential for injectable medical applications. This research underscores the importance of integrating multifunctional properties into a single system, opening new possibilities for innovative and durable adhesive materials.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142491262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synergistic dual-layer passivation boosts efficiency and stability in perovskite solar cells using naphthol sulfonate. 使用萘酚磺酸盐的双层钝化协同提高了过氧化物太阳能电池的效率和稳定性。
IF 12.2 2区 材料科学
Materials Horizons Pub Date : 2024-10-25 DOI: 10.1039/d4mh01311e
Hao Liu, Ning Jiang, Jintao Wang, Shuming Chen, Jian Zhang, Yu Duan
{"title":"Synergistic dual-layer passivation boosts efficiency and stability in perovskite solar cells using naphthol sulfonate.","authors":"Hao Liu, Ning Jiang, Jintao Wang, Shuming Chen, Jian Zhang, Yu Duan","doi":"10.1039/d4mh01311e","DOIUrl":"https://doi.org/10.1039/d4mh01311e","url":null,"abstract":"<p><p>The performance and stability of perovskite solar cells (PSCs) are critically influenced by the interfacial properties between the perovskite absorption layer and the electron transport layer (ETL). This study introduces a novel interfacial engineering approach using dipotassium 7-hydroxynaphthalene-1,3-disulfonate (K-NDS) as a multifunctional passivator to enhance both the SnO<sub>2</sub> ETL and the perovskite absorber layer. The sulfonic acid groups (-SO<sub>3</sub><sup>-</sup>) in K-NDS effectively fill oxygen vacancies on the SnO<sub>2</sub> surface, while the hydroxyl groups (-OH) passivate dangling bonds, improving the crystallinity of the perovskite film. Additionally, the diffusion of K<sup>+</sup> from the SnO<sub>2</sub> ETL into the perovskite layer optimizes energy level alignment, thereby enhancing charge carrier extraction and transport. This bifacial passivation strategy has significantly improved both the power conversion efficiency (PCE) and long-term stability of PSCs. The modified devices achieved a champion PCE of 23.00% and an open-circuit voltage (<i>V</i><sub>OC</sub>) of 1.172 V. Furthermore, these devices maintained 75% of their initial PCE even after 1000 hours of storage under indoor environmental conditions. This work demonstrates the effectiveness of synergistic interfacial passivation in advancing the performance and durability of PSCs.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142491265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Self-generating electricity system driven by aqueous humor flow and trabecular meshwork contraction motion activated BCKa for glaucoma intraocular pressure treatment. 由房水流动和小梁网收缩运动驱动的自发电系统,用于治疗青光眼眼压。
IF 12.2 2区 材料科学
Materials Horizons Pub Date : 2024-10-25 DOI: 10.1039/d4mh01004c
Ruiqi Wang, Haiying Wei, Yuying Shi, Cao Wang, Zhenqiang Yu, Yijian Zhang, Yifan Lai, Jingwei Chen, Guangfu Wang, Weiming Tian
{"title":"Self-generating electricity system driven by aqueous humor flow and trabecular meshwork contraction motion activated BCKa for glaucoma intraocular pressure treatment.","authors":"Ruiqi Wang, Haiying Wei, Yuying Shi, Cao Wang, Zhenqiang Yu, Yijian Zhang, Yifan Lai, Jingwei Chen, Guangfu Wang, Weiming Tian","doi":"10.1039/d4mh01004c","DOIUrl":"https://doi.org/10.1039/d4mh01004c","url":null,"abstract":"<p><p>Primary open-angle glaucoma (POAG) is the most common form of glaucoma and the leading cause of irreversible vision loss and blindness worldwide. Intraocular pressure (IOP) is the only modifiable risk factor, and prompt treatment to lower IOP can effectively slow the rate of vision loss due to glaucoma. Trabecular meshwork (TM) cells can maintain IOP homeostasis by correcting and adjusting the resistance to aqueous humor outflow in response to sustained pressure changes. TM cells' function is reduced, and membrane ion channels are impaired in POAG. The dysfunction of Large conductance Ca<sup>2+</sup>-activated K<sup>+</sup> (BKCa) plays a central role in the pathogenesis of POAG. In this work, we targeted MXene nanoparticles (MXene-RGD) with piezoelectric response to TM cells in a 3D model of glaucoma <i>in vitro</i> as well as in the rabbit Transient Ocular Hypertension (OHT) Model <i>in vivo</i>. MXene-RGD gives the TM electromechanical transfer properties, while the self-enhancing and self-generated electricity properties of the TM are determined by the aqueous humor flow rate and the size of the deformation of the TM. MXene-RGD is nontoxic, as illustrated by a cell toxicity study and histological examination. In a 3D <i>in vitro</i> model of high-pressure glaucoma, whole-cell patch-clamp confirmed that piezoelectric stimulation turns on BKCa, which reduces the volume of the cell. MXene-RGD was injected into the anterior chamber with minimal trauma, <i>i.e.</i>, anterior chamber injection, and specifically targeted to TM cells. The OHT model <i>in vivo</i> confirmed the potential IOP-lowering ability of MXene-RGD. We evaluated the ion channels involved in the reduction of IOP by MXene-RGD by pre-treatment with a BKCa channel blocker (iberiotoxin, IbTX) and a voltage-gated Ca<sup>2+</sup>channel blocker (nifedipine). Quantitative qPCR analysis showed that MXene-RGD inhibited the upregulation of mRNA expression levels of the myofibroblast marker α-smooth muscle actin (α-SMA) and the inflammatory response marker interleukin-6 (IL-6) induced by IOP. Histology confirmed that MXene-RGD attenuated IOP-induced proliferation and collagen production in the TM. Taken together, we present for the first time a minimally invasive surgical approach for targeting TM cells for POAG by utilizing piezoresponse nanomaterials to target BKCa to repair or awaken the ability of TM cells to regulate IOP homeostasis on their own.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142491264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Engineering of robust conjugated polymer-based aerogels via surface-initiated polycondensation towards sunlight-driven seawater desalination and uranium extraction. 通过表面引发的缩聚作用制造坚固的共轭聚合物气凝胶,用于阳光驱动的海水淡化和铀提取。
IF 12.2 2区 材料科学
Materials Horizons Pub Date : 2024-10-24 DOI: 10.1039/d4mh01055h
Yuan Chen, Guang-En Fu, Yu-Xiang Zhao, Ke Wang, Meng-Wei Chen, Qiang Ma, Shan Li, Jun-Yi Han, Li-Sha Liang, Wen-Kai Zhao, Peng Xiao, Sheng Wang, Tao Chen, Tao Zhang
{"title":"Engineering of robust conjugated polymer-based aerogels <i>via</i> surface-initiated polycondensation towards sunlight-driven seawater desalination and uranium extraction.","authors":"Yuan Chen, Guang-En Fu, Yu-Xiang Zhao, Ke Wang, Meng-Wei Chen, Qiang Ma, Shan Li, Jun-Yi Han, Li-Sha Liang, Wen-Kai Zhao, Peng Xiao, Sheng Wang, Tao Chen, Tao Zhang","doi":"10.1039/d4mh01055h","DOIUrl":"https://doi.org/10.1039/d4mh01055h","url":null,"abstract":"<p><p>The aerogels with low thermal conductivity and cross-linked 3D networks can be easily integrated with functional materials to maximize their functionalities, realizing diverse applications such as photothermal seawater desalination and photocatalytic uranium extraction. Sp<sup>2</sup>C-conjugated porous polymers (sp<sup>2</sup>C-CPPs) with robust and conjugated CC linkages are ideal photosensitizers for these applications, owing to their exceptional semiconducting properties as well as chemical stability. However, the limited processability and collectability of as-synthesized sp<sup>2</sup>C-CPP powders impede their extended applications. Herein, we report the preparation of robust sp<sup>2</sup>C-CPP (DHA-TMT and DBD-TMT) based aerogels <i>via</i> surface-initiated aldol polycondensation (SI-AP). The fully conjugated CC skeletons and electron-donating groups (-OH) endow the sp<sup>2</sup>C-CPP aerogels with excellent photothermal conversion efficiency (95.6%) and strong affinity for uranium adsorption. In particular, the DHA-TMT aerogel with hydrophilic porous channel exhibits a superb evaporation performance achieving ∼1.55 kg m<sup>-2</sup> h<sup>-1</sup> under AM 1.5 G while the fast mass transfer caused by photothermal conversion increases the uranium extraction capacity up to 1200 mg m<sup>-2</sup> in simulated seawater. Moreover, the sp<sup>2</sup>C-CPP aerogels demonstrate high stability under strong acid, base and brine solutions. This work shows a strategy for the preparation of uniform and high stability sp<sup>2</sup>C-CPP-based aerogels to simultaneously enhance their photothermal and photocatalytic performance.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142491259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Rheological investigations on frequency selective surface carbon composite microwave absorber. 频率选择性表面碳复合微波吸收器的流变学研究。
IF 12.2 2区 材料科学
Materials Horizons Pub Date : 2024-10-23 DOI: 10.1039/d4mh00993b
Priyanka, Prashant S Alegaonkar, Himangshu B Baskey
{"title":"Rheological investigations on frequency selective surface carbon composite microwave absorber.","authors":"Priyanka, Prashant S Alegaonkar, Himangshu B Baskey","doi":"10.1039/d4mh00993b","DOIUrl":"https://doi.org/10.1039/d4mh00993b","url":null,"abstract":"<p><p>A high-performance stealth platform is one of the crucial requirements in defence technology that could practically be realized by building effective microwave frequency selective surface (FSS) absorbers. Herein, we report the design and manufacturing of an absorber by tuning the rheology of cell architecture. Initially, a fan-shaped cell (10.4 mm<sup>2</sup>) was designed for its surface and bulk rheology. The FSS overlayer composition was investigated using SEM, EDX, and XRD and tuned for 0.25% carbon: 1.5% silver to achieve the ink resistivity ∼255 Ω □<sup>-1</sup>. The bulk rheology was optimized for air (Roha) spacer (thickness ∼2.8 mm), interlayer dielectrics (0.2 mm each), carbon composition (5%), and cell dimension (10.2 mm). Analyses are presented for absorption loss (<i>R</i><sub>C</sub>, dB), bandwidth (GHz), resonance dispersion, and constitutive (<i>ε</i>, <i>μ</i>) parameters, compounded with an equivalent circuit model with the settings <i>R</i> = 273.55 Ω, <i>L</i> = 2.25 nH, <i>C</i> = 0.057 pF and the Fabry-Perot reactance mode@10 GHz. The bi-modal response was investigated for induced polarization, electromagnetic fields, volume power distribution, and angular (<i>Θ</i> = 0°-50°) and rotational stability (<i>Φ</i> = 0°-90°) against TE/TM incidences. The FSS pattern was implemented using a screen printing technique to fabricate a prototype absorber and subjected to the free space measurements in an anechoic chamber. The prototype behaviour was found to be commensurate with the simulated performance, thereby achieving a figure of merit of <i>R</i><sub>C</sub> ∼-25 dB@10 GHz, accessible bandwidth 4 GHz (in X band) by using the thickness of 0.057 <i>λ</i><sub>0</sub>. Details are presented in this study.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142491263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Continuous flow synthesis of metal nanowires: protocols, engineering aspects of scale-up and applications. 金属纳米线的连续流合成:规程、工程放大和应用。
IF 12.2 2区 材料科学
Materials Horizons Pub Date : 2024-10-22 DOI: 10.1039/d4mh00781f
Jayesh R Sonawane, Rajashri Jundale, Amol A Kulkarni
{"title":"Continuous flow synthesis of metal nanowires: protocols, engineering aspects of scale-up and applications.","authors":"Jayesh R Sonawane, Rajashri Jundale, Amol A Kulkarni","doi":"10.1039/d4mh00781f","DOIUrl":"https://doi.org/10.1039/d4mh00781f","url":null,"abstract":"<p><p>This review comprehensively covers the translation from batch to continuous flow synthesis of metal nanowires (<i>i.e.</i>, silver, copper, gold, and platinum nanowires) and their diverse applications across various sectors. Metal nanowires have attracted significant attention owing to their versatility and feasibility for large-scale synthesis. The efficacy of flow chemistry in nanomaterial synthesis has been extensively demonstrated over the past few decades. Continuous flow synthesis offers scalability, high throughput screening, and robust and reproducible synthesis procedures, making it a promising technology. Silver nanowires, widely used in flexible electronics, transparent conductive films, and sensors, have benefited from advancements in continuous flow synthesis aimed at achieving high aspect ratios and uniform diameters, though challenges in preventing agglomeration during large-scale production remain. Copper nanowires, considered as a cost-effective alternative to silver nanowires for conductive materials, have benefited from continuous flow synthesis methods that minimize oxidation and enhance stability, yet scaling up these processes requires precise control of reducing environments and copper ion concentration. A critical evaluation of various metal nanowire ink formulations is conducted, aiming to identify formulations that exhibit superior properties with lower metal solid content. This study delves into the intricacies of continuous flow synthesis methods for metal nanowires, emphasizing the exploration of engineering considerations essential for the design of continuous flow reactors. Furthermore, challenges associated with large-scale synthesis are addressed, highlighting the process-related issues.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142453638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comb-like poly(β-amino ester)-integrated PEO-based self-healing solid electrolytes for fast ion conduction in lithium-sulfur batteries. 用于锂硫电池快速离子传导的梳状聚(β-氨基酯)集成 PEO 自修复固体电解质。
IF 12.2 2区 材料科学
Materials Horizons Pub Date : 2024-10-22 DOI: 10.1039/d4mh01181c
Hui-Min Wang, Mengdi Geng, Jing Bai, Dezhong Zhou, Weibo Hua, Sheng Liu, Xueping Gao
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