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PAM material that instantly gives ordinary fabrics excellent flame retardant and thermal insulation properties for fire rescue PAM 材料可瞬间赋予普通织物卓越的阻燃和隔热性能,用于消防救援
IF 8.2 2区 材料科学
Materials Today Nano Pub Date : 2024-10-24 DOI: 10.1016/j.mtnano.2024.100535
Bibo Zhou , Xiaoming Zhao , Yuanjun Liu
{"title":"PAM material that instantly gives ordinary fabrics excellent flame retardant and thermal insulation properties for fire rescue","authors":"Bibo Zhou ,&nbsp;Xiaoming Zhao ,&nbsp;Yuanjun Liu","doi":"10.1016/j.mtnano.2024.100535","DOIUrl":"10.1016/j.mtnano.2024.100535","url":null,"abstract":"<div><div>To effectively reduce the damage caused by flame burns or heat transfer to the human body during fire, we used PAM aqueous solution as the matrix, XG as the thickener, HPMC as the water-retaining agent to form the basic material system, and added different functional particles (APP, PTW, HCB) to prepare a fire-proof and heat-insulating PAM flame-retardant material for fire emergency rescue. Ordinary cotton fabrics were impregnated into PAM flame-retardant materials using a simple impregnation process. After the impregnation, the test was performed in a non-dropping state (simulating the thermal protection effect of PAM flame retardant materials directly acting on the outside of the human body at the fire scene). The results show that the PAM flame retardant material prepared by adding 4 wt% HCB has the best comprehensive performance. TPP test shows that spraying PAM flame retardant material on the outside of the fabric can instantly give the fabric a higher thermal protection performance. Under the total heat flux of 84 kW/m<sup>2</sup>, the thermal performance protection value of the fabric is 2641.8 kW s/m<sup>2</sup>, and the second-degree burn time can reach 31.45 s. PAM flame retardant material does not damage the fabric. After soaping, the air permeability of the fabric decreases slightly, the moisture permeability and wettability are improved, and the breaking strength is almost unchanged. The CCT test showed that the thermal radiation flux was 50 kW/m<sup>2</sup>, the PHRR value of PAM flame retardant material was 10.64552 kW/m<sup>2</sup>, the THR was 6.9 MJ/m<sup>2</sup>, and the flame retardant performance was excellent. The PAM flame retardant material prepared in this project can be applied to the fire scene and directly sprayed on the outside of the clothing of rescuers and recipients, giving the fabric a better thermal protection effect. It can also be used to extinguish fires in the external environment. This material offers a novel solution for enhancing fire rescuers' and victims' safety protection levels.</div></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"28 ","pages":"Article 100535"},"PeriodicalIF":8.2,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142539683","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
Radar-infrared compatible stealth technology in advanced nano-composite materials: Mechanisms and structural optimization 先进纳米复合材料中的雷达-红外线兼容隐身技术:机理和结构优化
IF 8.2 2区 材料科学
Materials Today Nano Pub Date : 2024-10-20 DOI: 10.1016/j.mtnano.2024.100534
Yi Gao , Qian Yang , Li Ma , Tian Li , Qing Qi , Tian Yang , Fanbin Meng
{"title":"Radar-infrared compatible stealth technology in advanced nano-composite materials: Mechanisms and structural optimization","authors":"Yi Gao ,&nbsp;Qian Yang ,&nbsp;Li Ma ,&nbsp;Tian Li ,&nbsp;Qing Qi ,&nbsp;Tian Yang ,&nbsp;Fanbin Meng","doi":"10.1016/j.mtnano.2024.100534","DOIUrl":"10.1016/j.mtnano.2024.100534","url":null,"abstract":"<div><div>Nowadays, multifunctional detection systems and reverse detection technologies play a dominant role in military reconnaissance and stealth gaming operations. Therefore, stealth technology, as the most powerful means of reverse detection, has increasingly become a research hot spot. In particular, when the detection weapons are equipped with radar and infrared detection, how to achieve effective compatibility of stealth to minimize the loss and the success of military operations is still a major challenge in current research. Therefore, this review provides an indepth discussion and distinction between the mechanisms of radar and infrared detection technologies, respectively, while emphasizing the technical challenges involved in achieving compatible stealth. Besides, the review explores the microwave absorption and infrared stealth properties of innovative advanced nano-composites materials (MXene, graphene, and metal-organic frameworks (MOFs)) reported to date. Subsequently, the review analyzes the properties, structural design, and optimization strategies of recently reported compatible stealth materials, ranging from low-dimensional to high-dimensional structures, and discusses in detail the recent advances in compatible stealth materials. Finally, the review summarizes the advantages of developing various materials and structures in this promising field, providing a comprehensive overview of their potential and efficacy.</div></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"28 ","pages":"Article 100534"},"PeriodicalIF":8.2,"publicationDate":"2024-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527946","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
Enhanced polarization sensitivity and tunability in truncated pyramidal GaAs quantum dots for FIR applications 增强截顶金字塔砷化镓量子点的偏振灵敏度和可调谐性,实现 FIR 应用
IF 8.2 2区 材料科学
Materials Today Nano Pub Date : 2024-10-19 DOI: 10.1016/j.mtnano.2024.100533
Suphawich Jindanate , Phatlada Sathongpaen , Attapon Amthong
{"title":"Enhanced polarization sensitivity and tunability in truncated pyramidal GaAs quantum dots for FIR applications","authors":"Suphawich Jindanate ,&nbsp;Phatlada Sathongpaen ,&nbsp;Attapon Amthong","doi":"10.1016/j.mtnano.2024.100533","DOIUrl":"10.1016/j.mtnano.2024.100533","url":null,"abstract":"<div><div>The far-infrared (FIR) spectrum, covering wavelengths from 20 to 1000 <span><math><mrow><mi>μ</mi><mi>m</mi></mrow></math></span>, presents significant challenges for the manipulation and detection of polarized light, especially in the short-wavelength FIR range of 20–100 <span><math><mrow><mi>μ</mi><mi>m</mi></mrow></math></span>. This study investigates the effectiveness of truncated pyramidal GaAs quantum dots in improving the absorption coefficient of polarized light within this range. Utilizing the finite difference method to obtain numerical solutions of the Schrödinger equation within the adiabatic approximation, we analyze the effects of various base shapes—equilateral hexagon, irregular hexagon, and equilateral triangle—on the optical absorption coefficients when subjected to an electric field with different directions and magnitudes. Our results reveal that triangular pyramidal quantum dots offer enhanced polarization sensitivity and greater tunability of absorption peaks compared to structures with other base shapes. Moreover, the direction of the applied electric field is crucial for tuning the absorption peaks in the desired range of FIR wavelength. These findings demonstrate the potential of truncated pyramidal GaAs quantum dots not only for improving sensing technologies but also for managing electromagnetic interference in advanced communication systems.</div></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"28 ","pages":"Article 100533"},"PeriodicalIF":8.2,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527947","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
A highly permeable nanoplatform based on functionalized carbon dots for synergistic reactive oxygen/nitrogen species tumor therapy 基于功能化碳点的高渗透性纳米平台,用于活性氧/氮协同治疗肿瘤
IF 8.2 2区 材料科学
Materials Today Nano Pub Date : 2024-10-19 DOI: 10.1016/j.mtnano.2024.100532
Jiangyong Li, Qin Li, Qian Yang, Qi Tang, Xiaoyi Hu, Qing Liu, Liangke Zhang
{"title":"A highly permeable nanoplatform based on functionalized carbon dots for synergistic reactive oxygen/nitrogen species tumor therapy","authors":"Jiangyong Li,&nbsp;Qin Li,&nbsp;Qian Yang,&nbsp;Qi Tang,&nbsp;Xiaoyi Hu,&nbsp;Qing Liu,&nbsp;Liangke Zhang","doi":"10.1016/j.mtnano.2024.100532","DOIUrl":"10.1016/j.mtnano.2024.100532","url":null,"abstract":"<div><div>Reactive oxygen species (ROS)-based antitumor strategies, particularly chemodynamic therapy, have garnered considerable attention. However, challenges such as difficulties in achieving deep penetration, relatively low H<sub>2</sub>O<sub>2</sub> levels in the tumor microenvironment, the requirement for low pH by the Fenton reaction, and their short lifespan have impeded satisfactory therapeutic outcomes. Hence, we have developed a nanoplatform with enhanced permeability that not only generates significant amounts of ROS but also converts them into longer-lasting reactive nitrogen species (RNS), thereby improving tumor therapy efficacy. In our study, carbon dots were functionalized by doping with gold atoms and grafting nitrosoglutathione (GSNO) to form ACN, which exhibits glucose oxidase-like properties and enables laser-responsive NO release. ACN and indocyanine green (ICG) were then loaded onto MnO<sub>2</sub> nanoflowers to form MnO<sub>2</sub>@AI. Upon arrival at the tumor site, MnO<sub>2</sub> reacts with H<sub>2</sub>O<sub>2</sub> and GSH, leading to its degradation and the subsequent release of ACN, which is characterized by three permeation-promoting properties: ultra-small size, positive charge, and NO content. In addition, ACN promotes H<sub>2</sub>O<sub>2</sub> production through glucose metabolism and reduces pH, both of which enhance the Fenton-like reaction of MnO<sub>2</sub>, thereby amplifying ROS generation. The ICG in MnO<sub>2</sub>@AI enhances its photothermal properties, leading to the responsive release of NO from GSNO grafted onto ACN, which then reacts with the increased ROS to generate more toxic RNS. Collectively, the approach described herein offers substantial potential for advancing the treatment of malignant tumors.</div></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"28 ","pages":"Article 100532"},"PeriodicalIF":8.2,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527944","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
Leveraging photosensitive and thermally stable luminescent Ba2ZnWO6:Eu3+, M+ (M+= Na, K , and Li) nanophosphor for targeted non-invasive and stain-free visualization of cracked tooth syndrome 利用具有光敏性和热稳定性的发光 Ba2ZnWO6:Eu3+、M+(M+= Na、K 和 Li)纳米荧光粉,对牙齿裂缝综合症进行有针对性的无创、无染色可视化治疗
IF 8.2 2区 材料科学
Materials Today Nano Pub Date : 2024-10-18 DOI: 10.1016/j.mtnano.2024.100531
Akshay Arjun , H.B. Premkumar , Lalitha S. Jairam , S.C. Sharma , H. Nagabhushana , G.P. Darshan
{"title":"Leveraging photosensitive and thermally stable luminescent Ba2ZnWO6:Eu3+, M+ (M+= Na, K , and Li) nanophosphor for targeted non-invasive and stain-free visualization of cracked tooth syndrome","authors":"Akshay Arjun ,&nbsp;H.B. Premkumar ,&nbsp;Lalitha S. Jairam ,&nbsp;S.C. Sharma ,&nbsp;H. Nagabhushana ,&nbsp;G.P. Darshan","doi":"10.1016/j.mtnano.2024.100531","DOIUrl":"10.1016/j.mtnano.2024.100531","url":null,"abstract":"<div><div>The cracked tooth syndrome poses a significant challenge in dentistry, thereafter untreated cases often lead to severe complications, such as pulpitis or complete tooth fracture, ultimately contributing to tooth loss. However, the conventional diagnostic methods to visualize microcracks in the tooth suffer from severe drawbacks, such as inaccurate cold stimulation, discomfort with probing, impractical staining techniques, and difficulty in distinguishing harmless craze lines from pathological cracks. To address this challenge, for the first time, we are proposing a novel approach by utilizing luminescent Ba<sub>2</sub>ZnWO<sub>6</sub>:Eu<sup>3+</sup> (3 mol %), K<sup>+</sup> (1 wt %) nanophosphor for improved imaging and diagnosis of cracked tooth syndrome. Herein, the double perovskite structured Ba<sub>2</sub>ZnWO<sub>6</sub>:Eu<sup>3+</sup> (1–11 mol %), M<sup>+</sup> (M<sup>+</sup> = Na, K, and Li (1 wt %)) nanophosphors were synthesized via the sonochemical route. The photoluminescence emission spectra of the prepared Ba<sub>2</sub>ZnWO<sub>6</sub>:Eu<sup>3+</sup> (1–11 mol %) nanophosphors displaying distinct peaks at 583, 595, 613, 662, and 720 nm, which ascribed to transitions from state <sup>5</sup>D<sub>0</sub> to <sup>7</sup>F<sub>J</sub> (J = 1–4) state of the Eu<sup>3+</sup> ions, respectively. By adopting a strategic charge compensation mechanism, the enhancement in the luminescence emission intensity of about 1.5-fold was achieved after co-doping K<sup>+</sup> (1 wt %) with Ba<sub>2</sub>ZnWO<sub>6</sub>:Eu<sup>3+</sup> (3 mol %) nanophosphor. The photometric studies of the phosphors portray their orange-red emission with excellent quantum efficiency (82.52 %), and color purity (∼ 99 %). The emission intensity was sustained up to 73.71 % at 473 K, indicating excellent thermal stability of the phosphor. The <em>in vitro</em> cytotoxicity assessments of the optimized nanophosphor demonstrated its biocompatibility on normal non-malignant oral fibroblasts. The visualized microcracks in the tooth using optimized Ba<sub>2</sub>ZnWO<sub>6</sub>:Eu<sup>3+</sup> (3 mol %), K<sup>+</sup> (1 wt %) nanophosphor under UV excitation of UV 365 and 395 nm light revealed the orientation of microcracks, crack width, depth of the crack, and microcrack branching without any stain. The aforementioned results demonstrated that the proposed methodology paves the way for a new avenue in dental imaging technology with the potential to revolutionize and improve patient care outcomes.</div></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"28 ","pages":"Article 100531"},"PeriodicalIF":8.2,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527945","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
2D isoporous materials: From precursor molecular structures to post-processing methods 二维等多孔材料:从前驱体分子结构到后处理方法
IF 8.2 2区 材料科学
Materials Today Nano Pub Date : 2024-10-10 DOI: 10.1016/j.mtnano.2024.100523
Yang Yang , Xianhui Li , Cheng Xiang
{"title":"2D isoporous materials: From precursor molecular structures to post-processing methods","authors":"Yang Yang ,&nbsp;Xianhui Li ,&nbsp;Cheng Xiang","doi":"10.1016/j.mtnano.2024.100523","DOIUrl":"10.1016/j.mtnano.2024.100523","url":null,"abstract":"<div><div>The emerging of two-dimensional (2D) isoporous materials forwarded the applications of membrane materials in cutting-edge fields such as refined separation, atom uptake and single-molecule detection. The key to the design of these materials lies in the precise tailoring of the pore structures. This review presents the state-of-the-art advancements of 2D isoporous materials, highlights the construction of isoporous structures in 2D materials through the bottom-up and top-down synthesis strategies, and reviews various fabrication routes. It comprehensively summarizes the impact of interface selection, precursor design and post-processing on pore formation, pore geometry and edge structures. The feasibility of the material scale-up, current challenges and future development prospects are outlined.</div></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"28 ","pages":"Article 100523"},"PeriodicalIF":8.2,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
High performance self-driven broadband photodetector for polarized imaging based on novel ZrS3/ReSe2 van der Waals heterojunction 基于新型 ZrS3/ReSe2 范德华异质结的高性能自驱动偏振成像宽带光电探测器
IF 8.2 2区 材料科学
Materials Today Nano Pub Date : 2024-10-09 DOI: 10.1016/j.mtnano.2024.100527
Lingqi Huang, Peipei Li, Chao Feng, Jing Zhang, Liyun Zhao, Jie Sun, Changhui Du, Wenjia Wang, Kuilong Li
{"title":"High performance self-driven broadband photodetector for polarized imaging based on novel ZrS3/ReSe2 van der Waals heterojunction","authors":"Lingqi Huang,&nbsp;Peipei Li,&nbsp;Chao Feng,&nbsp;Jing Zhang,&nbsp;Liyun Zhao,&nbsp;Jie Sun,&nbsp;Changhui Du,&nbsp;Wenjia Wang,&nbsp;Kuilong Li","doi":"10.1016/j.mtnano.2024.100527","DOIUrl":"10.1016/j.mtnano.2024.100527","url":null,"abstract":"<div><div>The distinctive characteristics of anisotropic two-dimensional (2D) materials, including in-plane anisotropy of optical absorption and carrier mobility, render them exceptionally suitable for application in the field of polarization detection and as a novel platform for the polarization imaging. Meanwhile, the consolidation of diverse functionalities within a single photodetector is highly anticipated to meet the demands of some special scenarios. Herein, a novel ZrS<sub>3</sub>/ReSe<sub>2</sub> van der Waals (vdWs) heterostructure device was successfully constructed to realize polarization-sensitive, self-powered, and broadband photodetection and imaging. Owing to the built-in electric field of the type-II band alignment within the heterojunction, the device achieves a self-powered photoresponse ranging from 300 to 980 nm, an ultralow dark currentt ∼1 pA, and a commendable rise/decay time of 0.35/0.28 ms. Additionally, it has been demonstrated that the self-driven photodetector possesses a polarization-sensitivity with a notable anisotropic ratio about 2.02 (1.98) under 490 nm (980 nm) light illumination with zero bias, coupled with an excellent repeatability and stability. Furthermore, we also demonstrate the polarization imaging capabilities of the device in visible and near-infrared spectrum, realizing a contrast-enhanced degree of linear polarization imaging. This work paves a new platform to develop heterojunction photodetectors for high performance polarization-sensitive photodetection and next-generation polarized imaging.</div></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"28 ","pages":"Article 100527"},"PeriodicalIF":8.2,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434389","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
LaFe-MOFs derivatives with different compositions for boosting low-frequency and broadband electromagnetic wave absorption 不同成分的 LaFe-MOFs 衍生物用于提高低频和宽带电磁波吸收率
IF 8.2 2区 材料科学
Materials Today Nano Pub Date : 2024-10-09 DOI: 10.1016/j.mtnano.2024.100528
Xiaoli Wang , Juhua Luo , Huajun Zhao , Yuhan Wu , Xing Liu , Yu Xie
{"title":"LaFe-MOFs derivatives with different compositions for boosting low-frequency and broadband electromagnetic wave absorption","authors":"Xiaoli Wang ,&nbsp;Juhua Luo ,&nbsp;Huajun Zhao ,&nbsp;Yuhan Wu ,&nbsp;Xing Liu ,&nbsp;Yu Xie","doi":"10.1016/j.mtnano.2024.100528","DOIUrl":"10.1016/j.mtnano.2024.100528","url":null,"abstract":"<div><div>To achieve low-frequency and broadband electromagnetic wave absorption (EMWA), building excellent metal-organic frameworks (MOFs)-derived EMWA materials is critical but remains challenging. In this research, La<sub>2</sub>O<sub>3</sub>/La<sub>2</sub>O<sub>2</sub>CN<sub>2</sub>/Fe/N-doped carbon (LFC) composites with different compositions were synthesized by adjusting the La<sup>3+</sup> content to tune the electromagnetic parameters. As the La<sup>3+</sup> content increased, the EMWA performance showed a trend of first increasing and then decreasing. As a result, LFC-2 achieved a minimum reflection loss (RL<sub>min</sub>) value of −60.82 dB at a thickness of 2.60 mm when the molar ratio of La<sup>3+</sup> to Fe<sup>3+</sup> was 1: 1, along with an effective absorption bandwidth value of 5.76 GHz (9.84–15.60 GHz) at 2.29 mm. Moreover, the EMWA performance of LFC-3 at low-frequency (4.08 GHz) was enhanced when the La³⁺ to Fe³⁺ molar ratio was 2: 1, with an RL<sub>min</sub> value of −47.47 dB. Comprehensive characterizations suggested that the formation of the La<sub>2</sub>O<sub>2</sub>CN<sub>2</sub> phase played an indispensable role in optimizing impedance matching and enhancing magnetic loss and dielectric loss. In addition, La<sup>3+</sup> had a high coordination number, which effectively regulated the electromagnetic parameters. Concurrently, radar cross-section simulation results confirmed the outstanding EMWA capability of the LFC coating. This work proposed a strategy for LaFe-MOFs derivatives, shedding light on the foundation for designing more efficient low-frequency and broadband absorbent materials.</div></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"28 ","pages":"Article 100528"},"PeriodicalIF":8.2,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434392","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
3D printed PEEK/CF nanocomposites metamaterial for enhanced resonances toward microwave absorption and compatible camouflage 三维打印 PEEK/CF 纳米复合材料超材料,用于增强微波吸收共振和兼容伪装
IF 8.2 2区 材料科学
Materials Today Nano Pub Date : 2024-10-09 DOI: 10.1016/j.mtnano.2024.100530
Xinghan Huang , Ximing Zhang , Guoke Wei , Hang Zhang , Shujuan Tan , Guangbin Ji
{"title":"3D printed PEEK/CF nanocomposites metamaterial for enhanced resonances toward microwave absorption and compatible camouflage","authors":"Xinghan Huang ,&nbsp;Ximing Zhang ,&nbsp;Guoke Wei ,&nbsp;Hang Zhang ,&nbsp;Shujuan Tan ,&nbsp;Guangbin Ji","doi":"10.1016/j.mtnano.2024.100530","DOIUrl":"10.1016/j.mtnano.2024.100530","url":null,"abstract":"<div><div>The stealth materials for future weapons and equipment need to operate within the radar working band, be lightweight, easy to process, and compatible with infrared stealth. Integrating all these characteristics poses a significant challenge. This work utilizes poly (ether-ether-ketone)/carbon fibers (PEEK/CF) composite materials and employed reverse-guided manufacturing through simulation design. Incorporating a grid structure within the pyramid metamaterial enables electromagnetic wave reflecting multiple times in various directions. By optimizing the important interaction between dielectric properties of the materials structures,the Pyramid Grid Filled Metamaterial enables broadband electromagnetic wave absorption (&lt;-10 dB, 8–18 GHz), weak angular dependence (5- 45<sup>o</sup> incidence), polarization insensitivity, radar cross section (RCS) reduction (reduction over 10 dB between θ = −60° and 60°), and infrared camouflage performance. The PGF metamaterial of 180◊180 mm<sup>2</sup>, weighs only 103.1 g at a thickness of 9 mm. This work paves a way for the design the radar infrared compatible composite metamaterials.</div></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"28 ","pages":"Article 100530"},"PeriodicalIF":8.2,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434391","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
Construction of 2D/2D heterostructure with porous few layer g-C3N4 and NiCo2O4 nanosheets towards electromagnetic wave absorption 利用多孔少层 g-C3N4 和 NiCo2O4 纳米片构建二维/二维异质结构以吸收电磁波
IF 8.2 2区 材料科学
Materials Today Nano Pub Date : 2024-10-09 DOI: 10.1016/j.mtnano.2024.100529
Nuohua Xie , Wenzi Chen , Ya Ning, Xiaojun Zeng
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