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Design and analysis of RbBeBr3−xIx (x=0–3) lead-free perovskites: Tunable mechanical and optoelectronic properties via iodine substitution RbBeBr3−xIx （x= 0-3）无铅钙钛矿的设计与分析：通过碘取代可调节机械和光电性能

Nano Trends

Pub Date : 2025-12-10 DOI: 10.1016/j.nwnano.2025.100172

Ismail Benaicha , Imane Laazizi , Youness Ait Alla , Jaouad Mhalla , Hafsa Diyagh , Khalid Nouneh , Smail Amraoui , Atika Fahmi , Marouan Karam , Ahmed Qachaou , Mounir Fahoume

This study presents a first-principles analysis of the structural, mechanical, and optoelectronic properties of the lead-free perovskite series RbBeBr

_{3 - x}

I

_{x}

(

x = 0

, 1, 2, 3) using density functional theory. We investigate the trade-offs between property tuning and stability. While all compositions satisfy the Goldschmidt tolerance factor, formation energy calculations reveal that the mixed-halide phases (

x = 1, 2

) are thermodynamically unstable relative to the pure-halide end members (RbBeBr

_{3}

and RbBeI

_{3}

). Mechanical analysis confirms the stability of RbBeBr

_{3}

, RbBeBr

_{1}

I

_{2}

, and RbBeI

_{3}

, but crucially identifies RbBeBr

_{2}

I

_{1}

as elastically unstable, evidenced by a negative elastic eigenvalue of

-

1.7171 GPa. Progressive iodine substitution induces systematic lattice softening, reducing the Hill-averaged Young’s modulus from 26.6 GPa (

x = 0

) to 19.7 GPa (

x = 3

). Optoelectronically, iodine substitution effectively tunes the bandgap from 2.106 eV (indirect) for RbBeBr

_{3}

to 0.495 eV (direct) for RbBeI

_{3}

. This is driven by the I-5

p

orbitals elevating the valence band maximum. Consequently, the optical absorption edge redshifts, enhancing visible-light harvesting. Our findings demonstrate that RbBeBr

_{3 - x}

I

_{x}

offers significant optoelectronic tunability but highlights critical thermodynamic and elastic instabilities in the mixed-halide compositions, suggesting non-equilibrium synthesis routes are necessary for their practical realization.

本研究利用密度泛函理论对无铅钙钛矿系列RbBeBr3−xIx （x= 0,1,2,3）的结构、力学和光电性能进行了第一性原理分析。我们研究了属性调整和稳定性之间的权衡。虽然所有成分都满足Goldschmidt容差系数，但地层能量计算表明，相对于纯卤化物端元（RbBeBr3和RbBeI3），混合卤化物相（x=1,2）在热力学上是不稳定的。力学分析证实了RbBeBr3、RbBeBr1I2和RbBeI3的稳定性，但关键是确定RbBeBr2I1具有弹性不稳定性，其弹性特征值为- 1.7171 GPa。逐步碘取代引起系统的晶格软化，使希尔平均杨氏模量从26.6 GPa （x=0）降低到19.7 GPa （x=3）。光电性能方面，碘取代有效地将RbBeBr3的带隙从2.106 eV（间接）调整到0.495 eV（直接）。这是由I-5p轨道提高价带最大值所驱动的。因此，光学吸收边红移，增强可见光捕获。我们的研究结果表明，RbBeBr3−xIx具有显著的光电可调性，但在混合卤化物组合物中突出了关键的热力学和弹性不稳定性，这表明非平衡合成路线对于其实际实现是必要的。

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引用次数: 0

Study analysis of consuming computer vision approaches for calculating the particle size of NiO- Al2O3 nanocomposite 使用计算机视觉方法计算NiO- Al2O3纳米复合材料粒度的研究分析

Nano Trends

Pub Date : 2025-12-10 DOI: 10.1016/j.nwnano.2025.100173

Sinan S. Hamdi , Zinah N. Alabdali , Farah F. Alkalid

As a rapid development in the field of nanocomposite materials, sol-gel is considered one of the most accurate ways for preparation nanocomposite. Nanocomposite is usually characterized by scanning electron microscopy (SEM) for measuring the nano particle size. The major drawbacks of using scanning electron microscopy are the focus on small areas of the image. It takes a long time to measure a small area and depends on human skill, which involves manually drawing a line over each particle to calculate the average. Therefore, it is reliable, easy, fast, and simple way to computing program. A computing program refers to a set of instructions designed to achieve specific objectives, commonly known as algorithms. In this research, sol-gel was used to prepare NiO-Al₂O₃ nanocomposite, then scanning electron microscope (SEM) was used to estimate the particle size of the SEM image. Afterward, an algorithm was proposed for calculating the particle size of NiO-Al₂O₃ nanocomposite by applying computer vision. Eight of the preprocessing approaches are used for image enhancement: Histogram Equalization, CLAHE, Gaussian Blurred, Median Blurred, Bilateral Filter, Unsharp filter, Sobel and Wavelet. The results of particle size measured manually from the SEM image was 42 nm while the computer vision using CLAHE was 38 nm with particle detection of 86 % and Median Blurred is 42 nm with particle detection is 71 %. Therefore, the CLAHE algorithm shows the most accurate because it detects more particles than the other algorithms.

溶胶-凝胶法是纳米复合材料领域发展最快的一种方法，被认为是制备纳米复合材料最精确的方法之一。纳米复合材料通常通过扫描电子显微镜（SEM）来测量纳米颗粒的大小。使用扫描电子显微镜的主要缺点是聚焦于图像的小区域。测量一小块区域需要花费很长时间，并且依赖于人类的技能，这需要手动在每个粒子上画一条线来计算平均值。因此，它是一种可靠、方便、快速、简单的程序计算方法。计算程序指的是为实现特定目标而设计的一组指令，通常称为算法。在本研究中，采用溶胶-凝胶法制备了NiO-Al2O3纳米复合材料，然后利用扫描电子显微镜（SEM）估计了SEM图像的粒度。随后，提出了一种应用计算机视觉计算NiO-Al2O3纳米复合材料粒径的算法。图像增强使用了8种预处理方法：直方图均衡化、CLAHE、高斯模糊、中值模糊、双边滤波、非锐化滤波、Sobel和小波。人工扫描电镜测得的颗粒大小为42 nm，计算机视觉CLAHE测得的颗粒大小为38 nm，颗粒检出率为86%，Median Blurred测得的颗粒大小为42 nm，颗粒检出率为71%。因此，clhe算法比其他算法检测到更多的粒子，显示出最准确的结果。

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引用次数: 0

Functional nanomaterials in combating antimicrobial resistance: Innovations in wound dressings and biomedical implants 抗微生物耐药性的功能纳米材料：伤口敷料和生物医学植入物的创新

Nano Trends

Pub Date : 2025-12-09 DOI: 10.1016/j.nwnano.2025.100174

Mansi Agarwal , Ramakrishnan Ganesan , Jayati Ray Dutta

The rapid escalation of antimicrobial resistance (AMR) has rendered conventional antibiotics increasingly ineffective, particularly in chronic wound management and implant-associated infections where biofilm formation impedes drug penetration and fosters multidrug-resistant pathogens. Functional nanomaterials—encompassing metallic and metal-oxide nanoparticles, carbon-based nanostructures, polymeric and hybrid nanocomposites, and stimuli-responsive systems—offer transformative solutions by enabling localized, sustained, and multimodal antimicrobial action. These nanoscale platforms disrupt bacterial membranes, generate reactive oxygen species (ROS), release therapeutic ions or payloads in a controlled manner, and integrate regenerative cues to accelerate tissue repair. In wound dressings, nanomaterial integration enhances antimicrobial efficacy, angiogenesis, and moisture balance, while advanced implant coatings deliver biofilm-resistant, osteoinductive, and infection-responsive surfaces without systemic toxicity. This review synthesizes advances from 2010 to 2025, emphasizing biofilm-disruption mechanisms, smart drug-release strategies, and the clinical translation of nanomaterial-enabled therapies. It critically evaluates biosafety, regulatory, and scalability challenges, while outlining future directions including AI-guided material design, personalized nanomedicine, and sustainable synthesis approaches. By uniting antimicrobial potency with regenerative functionality, functional nanomaterials represent a paradigm shift in combating AMR at the interface of infection control and tissue engineering.

抗菌素耐药性（AMR）的迅速升级使得传统抗生素越来越无效，特别是在慢性伤口处理和植入物相关感染中，生物膜的形成阻碍了药物渗透并促进了多重耐药病原体。功能纳米材料——包括金属和金属氧化物纳米颗粒、碳基纳米结构、聚合物和混合纳米复合材料以及刺激响应系统——通过实现局部、持续和多模态的抗菌作用，提供了变革性的解决方案。这些纳米级平台破坏细菌膜，产生活性氧（ROS），以可控的方式释放治疗离子或有效载荷，并整合再生信号以加速组织修复。在伤口敷料中，纳米材料的整合增强了抗菌效果、血管生成和水分平衡，而先进的植入物涂层提供了抗生物膜、骨诱导和感染反应表面，而没有全身毒性。本文综述了从2010年到2025年的研究进展，重点介绍了生物膜破坏机制、智能药物释放策略和纳米材料治疗的临床转化。它批判性地评估了生物安全、监管和可扩展性挑战，同时概述了未来的方向，包括人工智能指导的材料设计、个性化纳米医学和可持续合成方法。通过将抗菌效力与再生功能结合起来，功能纳米材料代表了在感染控制和组织工程界面对抗抗菌素耐药性的范式转变。

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引用次数: 0

Nanoparticle-enabled herbal therapeutics for wound healing: bridging traditional medicine and modern nanotechnology 纳米颗粒使草药治疗伤口愈合：连接传统医学和现代纳米技术

Nano Trends

Pub Date : 2025-12-08 DOI: 10.1016/j.nwnano.2025.100170

Shrihari B. Patil , Priyanka P. Patil , Sourav D. Gore , Shashidhar C. Patil , Rahul Koli

Wound healing is a complex, multistage physiological process involving hemostasis, inflammation, proliferation, and remodeling. Despite progress in conventional therapies, chronic and infected wounds remain major global health burdens, necessitating advanced biomaterial-based interventions. In recent years, nanoparticle-based delivery systems have emerged as transformative platforms for accelerating tissue repair, preventing infection, and modulating inflammatory pathways. This review comprehensively explores the integration of metal-based nanoparticles—including silver (Ag), gold (Au), copper (Cu), titanium (Ti), zinc (Zn), manganese (Mn), and cerium (Ce)—and biopolymeric or lipid-based nanostructures, such as nanoemulsions, hydrogels, solid lipid nanoparticles, and polymeric composites, in modern wound-healing strategies. These nanosystems exhibit superior bioavailability, controlled release, and targeted delivery of therapeutic phytoconstituents and biomolecules. In parallel, the growing body of herbal formulation patents demonstrates how traditional phytotherapy and modern nanotechnology are converging to create multifunctional, eco-sustainable wound-healing products with enhanced clinical potential. Key innovations include synergistic antimicrobial–anti-inflammatory activity, improved collagen synthesis, angiogenesis, and re-epithelialization. Together, these advancements mark a paradigm shift toward nanostructured herbal therapeutics that are biocompatible, stable, and scalable for translational and industrial development. This review provides a critical synthesis of current trends, mechanistic insights, and emerging directions, underscoring how nanoparticle-enabled herbal formulations are redefining the future of regenerative wound care.

伤口愈合是一个复杂的、多阶段的生理过程，包括止血、炎症、增殖和重塑。尽管传统疗法取得了进展，但慢性伤口和感染伤口仍然是全球主要的健康负担，因此需要先进的基于生物材料的干预措施。近年来，基于纳米颗粒的递送系统已经成为加速组织修复、预防感染和调节炎症途径的变革性平台。本文全面探讨了金属基纳米颗粒（包括银（Ag）、金（Au）、铜（Cu）、钛（Ti）、锌（Zn）、锰（Mn）和铈（Ce））与生物聚合物或脂质纳米结构（如纳米乳液、水凝胶、固体脂质纳米颗粒和聚合物复合材料）在现代伤口愈合策略中的整合。这些纳米系统表现出优越的生物利用度、控释和靶向递送治疗性植物成分和生物分子。与此同时，越来越多的草药配方专利表明，传统的植物疗法和现代纳米技术如何融合在一起，创造出多功能、生态可持续的伤口愈合产品，具有更高的临床潜力。关键创新包括协同抗炎活性，改善胶原合成，血管生成和再上皮化。总之，这些进步标志着纳米结构草药疗法的范式转变，这些疗法具有生物相容性，稳定性和可扩展的转化和工业发展。这篇综述提供了当前趋势、机制见解和新兴方向的关键综合，强调了纳米颗粒使草药配方如何重新定义再生伤口护理的未来。

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引用次数: 0

Radiation shielding for nuclear medicine using advanced dy-doped nanocomposites 先进掺杂纳米复合材料在核医学辐射屏蔽中的应用

Nano Trends

Pub Date : 2025-12-08 DOI: 10.1016/j.nwnano.2025.100171

M.R. Alipoor , M. Eshghi , O. Akhavan

Effective radiation shielding is critical for medical and nuclear safety, but conventional lead-based materials are toxic and heavy. However, a high-performance, non-toxic alternative with optimized composition for mixed-field radiation remains an unmet need. Here establish a new class of lightweight, lead-free shields using dysprosium-doped Mn–Cu ferrite nanocomposites. The selected nanocomposites with varying Dy concentrations (0 to15 mole) and evaluated their gamma-ray (0.015 to 1 MeV) and fast neutron shielding performance. Key parameters, including mass attenuation coefficient, half-value layer and fast neutron removal cross-section (Σ_R), were simulated using the Geant4 toolkit. Shielding efficacy increased systematically with Dy content. The 15% Dy-doped sample (MCDFO15) demonstrated unprecedented performance, requiring up to 25% less thickness than the undoped composite at 200 keV for equivalent gamma attenuation. MCDFO15 exhibited a superior fast neutron removal cross-section (Σ_R ≈ 0.062 cm⁻¹ vs. 0.054 cm⁻¹ for MCFO) and a higher neutron absorption ratio. This enhancement is directly attributable to the increased effective atomic number and electron density from Dy doping. Dy doping transforms the intrinsic shielding properties of ferrite nanocomposites, establishing a highly effective strategy for radiation protection. This work paves the way for the development of tunable, non-toxic shields for advanced diagnostic and nuclear applications.

有效的辐射屏蔽对医疗和核安全至关重要，但传统的铅基材料有毒且重。然而，一种高性能、无毒的、具有优化成分的混合场辐射替代品仍然是一个未满足的需求。本文采用掺镝锰铜铁氧体纳米复合材料，建立了一种新型轻质无铅屏蔽材料。选择不同Dy浓度（0 ~ 15摩尔）的纳米复合材料，评价其屏蔽γ射线（0.015 ~ 1 MeV）和快中子的性能。使用Geant4工具对质量衰减系数、半值层和快中子去除截面（ΣR）等关键参数进行了模拟。屏蔽效能随Dy含量的增加而增加。15%掺杂的样品（MCDFO15）表现出前所未有的性能，在200 keV下，其厚度比未掺杂的复合材料少25%，以达到等效的伽马衰减。MCDFO15具有更好的快中子去除截面（ΣR≈0.062 cm⁻¹vs. MCFO为0.054 cm⁻¹）和更高的中子吸收比。这种增强直接归因于Dy掺杂增加了有效原子序数和电子密度。Dy掺杂改变了铁氧体纳米复合材料的固有屏蔽性能，建立了一种高效的辐射防护策略。这项工作为开发用于先进诊断和核应用的可调谐、无毒屏蔽铺平了道路。

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引用次数: 0

In-silico and in-vitro evaluation of phytochemicals targeting outer membrane proteins OmpK35 and OmpK36 of MDR Klebsiella pneumonia 靶向耐多药克雷伯菌肺炎外膜蛋白OmpK35和OmpK36的植物化学物质的体外和计算机评价

Nano Trends

Pub Date : 2025-12-01 DOI: 10.1016/j.nwnano.2025.100167

A. Arıvazhagan , Jahangir Ahmed , Karthikeyan Ramalingam

Multidrug-resistant (MDR) Klebsiella pneumoniae (Kp) presents a significant clinical threat due to its resistance to multiple antibiotics and its enhanced virulence. Key outer membrane porins, OmpK35 and OmpK36, contribute to this resistance by limiting antibiotic influx and supporting bacterial survival. This study aimed to identify and evaluate phytochemicals targeting these porins using an integrated in silico -in vitro approach.

Over 100 phytocompounds were screened via molecular docking, revealing N-curcumin and myricetin as top candidates with binding affinities of -7.33 kcal/mol (OmpK35) and -7.58 kcal/mol (OmpK36), respectively. ADMET profiling supported their drug-likeness and safety. These compounds were further evaluated against reference and clinical Kp strains.

Minimum bactericidal concentration (MBC) assays showed that both N-curcumin and myricetin achieved effective killing at 7.5 mg/mL. Biofilm inhibition rates ranged from 40-48%, comparable to standard gentamicin. Crystal violet staining and microscopy confirmed significant biofilm disruption. Additionally, oxygen consumption rate (OCR) assays revealed substantial reductions in metabolic activity. Myricetin led to OCR decreases of 0.40-, 0.52-, and 0.35-fold against MTCC-432, ATCC-35657, and CL-1 strains, respectively.

Collectively, these findings highlight the dual antibacterial and antivirulence potential of N-curcumin and myricetin. Their ability to disrupt membrane protein function, inhibit biofilm formation, and impair bacterial respiration offers strong promise for their development as alternative therapeutics against MDR K. pneumoniae. This study supports the ongoing search for plant-derived compounds in the fight against resistant Gram-negative pathogens.

耐多药肺炎克雷伯菌（Klebsiella pneumoniae, Kp）对多种抗生素具有耐药性，毒力增强，对临床构成重大威胁。关键的外膜孔蛋白OmpK35和OmpK36通过限制抗生素内流和支持细菌存活来促进这种耐药性。本研究旨在利用集成的体外方法鉴定和评估靶向这些孔蛋白的植物化学物质。通过分子对接筛选了100多个植物化合物，结果显示n -姜黄素和杨梅素的结合亲和力分别为-7.33 kcal/mol （OmpK35）和-7.58 kcal/mol （OmpK36）。ADMET分析支持它们的药物相似性和安全性。这些化合物与对照和临床Kp菌株进行了进一步的评价。最小杀菌浓度（MBC）测定表明，n -姜黄素和杨梅素在7.5 mg/mL的浓度下均能达到有效杀灭效果。生物膜抑制率为40-48%，与标准庆大霉素相当。结晶紫染色和显微镜检查证实明显的生物膜破坏。此外，氧消耗率（OCR）测定显示代谢活性大幅降低。杨梅素对MTCC-432、ATCC-35657和CL-1的OCR分别降低0.40倍、0.52倍和0.35倍。总的来说，这些发现强调了n -姜黄素和杨梅素的双重抗菌和抗毒潜力。它们破坏膜蛋白功能、抑制生物膜形成和损害细菌呼吸的能力，为它们作为耐多药肺炎克雷伯菌的替代疗法的发展提供了强有力的希望。这项研究支持了正在进行的寻找植物源化合物对抗耐药革兰氏阴性病原体的研究。

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引用次数: 0

Graphene-based terahertz antenna with enhanced backscatter sensitivity for early breast cancer localization 基于石墨烯的太赫兹天线增强后向散射灵敏度用于早期乳腺癌定位

Nano Trends

Pub Date : 2025-12-01 DOI: 10.1016/j.nwnano.2025.100169

Anupma Gupta , Vipan Kumar , Sonu Bala Garg , Shonak Bansal , A.J.A. Al-Gburi

Terahertz (THz) imaging is emerging as a promising technique for early breast cancer detection due to its high sensitivity to tissue property variations. This paper presents a compact graphene-based patch antenna designed for broadband operation, occupying only 18 µm × 23 µm. The antenna achieves a wide bandwidth of 5.9 THz (3.1–9 THz) and a peak gain of 6.47 dBi without tissue loading, enabled by a full ground plane that ensures unidirectional radiation. To evaluate its performance for cancer detection, numerical breast phantoms with and without tumors were modeled. A significant S11 deviation of up to 16 dB was observed between healthy and cancerous tissue, indicating strong sensitivity to dielectric changes. Additionally, tumor localization was achieved by analyzing the spatial variation of the backscattered signal along the X and Y axes. The results confirm that the proposed antenna can detect minute tumors (∼10 µm radius) and effectively differentiate between malignant and healthy tissues, highlighting its potential for early-stage breast cancer screening.

太赫兹（THz）成像由于其对组织特性变化的高灵敏度而成为早期乳腺癌检测的一种有前途的技术。本文提出了一种紧凑的基于石墨烯的贴片天线，设计用于宽带操作，占地仅为18 μ m × 23 μ m。该天线可实现5.9太赫兹（3.1-9太赫兹）的宽带宽和6.47 dBi的峰值增益，无需组织加载，通过全地平面确保单向辐射。为了评估其在癌症检测方面的性能，对有肿瘤和无肿瘤的乳腺幻影进行了数值模拟。在健康组织和癌组织之间观察到显著的S11偏差高达16 dB，表明对介电变化具有很强的敏感性。此外，通过分析后向散射信号沿X和Y轴的空间变化，实现了肿瘤的定位。结果证实，该天线可以检测到微小的肿瘤（半径约10µm），并有效区分恶性和健康组织，突出了其早期乳腺癌筛查的潜力。

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引用次数: 0

Synthesis, characterizations and EMI shielding behaviour of nanostructured molybdenum-chalcogenides (MoSeTe) 纳米结构钼硫化物（MoSeTe）的合成、表征及电磁干扰屏蔽性能

Nano Trends

Pub Date : 2025-11-30 DOI: 10.1016/j.nwnano.2025.100168

Soban Imran Mulla, Naeem Mohammad, Pawan K. Khanna

Nanostructured molybdenum chalcogenides (MoSeTe), distinguished by their unique structures, have emerged as promising candidates for advanced technological applications due to their multifunctional properties. This investigation elucidates the synthesis of MoSeTe through a solvothermal approach, with stochiometric challenges and anisotropic morphology at nano-scale. The X-ray diffraction (XRD) analysis confirmed formation of well-defined nanostructures that exhibited distinct selenium (Se) and tellurium (Te) richness. The morphological aspects of as-prepared MoSeTe were studied using high-resolution transmission electron microscopy (HRTEM), field emission scanning electron microscopy (SEM) and atomic force microscopy (AFM). Functionality where expected was understood by Fourier transform infrared spectroscopy (FTIR). The MoSeTe/Ag/PVA nanocomposite films fabricated via the solution casting method demonstrated superior electromagnetic interference (EMI) shielding effectiveness in the X-band (8.2 to 12.4 GHz). Nanocomposite films with nano silver showed shielding effectiveness of about -37.06 and -45.14 dB for 1.0 mm and 2.0 mm thickness. This study highlights the scope of Mo-chalcogenides for their critical role as tailored nanostructures in advancing next-generation technologies for electronics and sustainable environmental applications.

纳米结构硫化物钼（MoSeTe）以其独特的结构而著称，由于其多功能的特性而成为先进技术应用的有希望的候选者。本研究阐明了通过溶剂热方法合成MoSeTe，在纳米尺度上具有化学计量学挑战和各向异性形态。x射线衍射（XRD）分析证实形成了明确的纳米结构，具有明显的硒（Se）和碲（Te）丰度。采用高分辨率透射电子显微镜（HRTEM）、场发射扫描电子显微镜（SEM）和原子力显微镜（AFM）对制备的MoSeTe的形貌进行了研究。通过傅里叶变换红外光谱（FTIR）了解了预期的功能。通过溶液浇铸法制备的MoSeTe/Ag/PVA纳米复合膜在x波段（8.2 ~ 12.4 GHz）具有良好的电磁干扰屏蔽效果。纳米银纳米复合膜在1.0 mm和2.0 mm厚度下的屏蔽效果分别为-37.06和-45.14 dB。这项研究突出了钼硫族化合物作为定制纳米结构在推进下一代电子技术和可持续环境应用方面的关键作用。

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引用次数: 0

Piezoelectric polymer nanocomposite: Fabricating methods for materials and devices 压电聚合物纳米复合材料：材料与器件的制造方法

Nano Trends

Pub Date : 2025-11-13 DOI: 10.1016/j.nwnano.2025.100166

R.O. Okpuwhara, B.O. Oboirien

Polymer-based piezoelectric nanocomposites, serving as smart materials for devices, offer a sustainable alternative to conventional energy sources. These materials exhibit notable flexibility, lightweight characteristics, and integration advantages, surpassing non-polymeric counterparts and proving versatile in wearable technology. Furthermore, many polymeric piezoelectric materials boast biocompatibility, making them suitable for various biomedical applications. Among these, PVDF and related polymers stand out for their utility in piezoelectric devices, providing direct use as smart materials in transduction applications. This article summarises piezoelectric materials based on their operational principles, material properties, fabrication techniques, devices, and applications in electromechanical devices, alongside a historical overview of the earliest discoveries in piezoelectricity. Additionally, the role of polymer nanocomposite fibres in piezoelectricity is explored, particularly their preparation via electrospinning, which offers advantages such as a large specific surface area, controllable structure, ease of fabrication and low cost. The article also outlines the pioneering developments in electrospinning technology, including its principles and strategies, in the fabrication of piezoelectric materials.

聚合物基压电纳米复合材料，作为智能材料的设备，提供了一个可持续的替代传统能源。这些材料具有显著的柔韧性、轻质特性和集成优势，超越了非聚合物材料，并证明了其在可穿戴技术中的多功能性。此外，许多聚合物压电材料具有生物相容性，使其适用于各种生物医学应用。其中，PVDF和相关聚合物因其在压电器件中的应用而脱颖而出，可直接用作转导应用中的智能材料。本文总结了压电材料的工作原理、材料特性、制造技术、器件和在机电设备中的应用，以及压电最早发现的历史概况。此外，还探讨了聚合物纳米复合纤维在压电中的作用，特别是通过静电纺丝制备聚合物纳米复合纤维，该方法具有比表面积大、结构可控、易于制造和成本低等优点。文章还概述了静电纺丝技术的开创性发展，包括其原理和策略，在压电材料的制造。

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引用次数: 0

Wearable triboelectric nanogenerators based sensors for human cardiovascular monitoring: progress and perspectives 基于摩擦纳米发电机的可穿戴式人体心血管监测传感器：进展与展望

Nano Trends

Pub Date : 2025-11-11 DOI: 10.1016/j.nwnano.2025.100165

Mashrufa Akther , Andrea K. Quezada , Md Arafat Hossain , Julia I. Salas , Md. Mahmud Alam , Mohammed Jasim Uddin

Cardiovascular conditions remain the leading cause of death worldwide, driving a critical need for non-invasive, continuous, and dependable health monitoring results. Triboelectric nanogenerators have emerged as a groundbreaking technology enabling self-powered wearable sensors that convert natural biomechanical energy, such as heartbeat, pulse wave, and body motion, into electrical signals. The paper reviews the recent progress and development in TENG-based wearable sensors for cardiovascular monitoring, with a focus on monitoring particular and clinical healthcare. The working principles, advanced materials, structural designs, and integration with wireless data transmission, machine literacy, and bio-signal processing technologies are explored in this article. Operations, including heart rate shadowing, pulse rate analysis, blood pressure estimation, and electrocardiogram monitoring, are critically analyzed, along with their biocompatibility, safety, and long-term stability. Additionally, we addressed current challenges such as environmental continuity, signal reliability, energy operation, and proposed future directions emphasizing sustainable materials, AI-supported estimation, and green energy systems. The integration of TENG technology with innovative, wearable platforms represents a transformative step toward real-time, substantiated cardiovascular health monitoring, with broad and significant impact on telemedicine, preventative care, and implantable medical devices.

心血管疾病仍然是世界范围内死亡的主要原因，因此迫切需要无创、连续和可靠的健康监测结果。摩擦电纳米发电机已经成为一项突破性的技术，它使自供电的可穿戴传感器能够将自然的生物机械能（如心跳、脉搏波和身体运动）转化为电信号。本文综述了基于teng的可穿戴式心血管监测传感器的最新进展和发展，重点介绍了特殊和临床医疗监测。本文探讨了其工作原理、先进材料、结构设计以及与无线数据传输、机器读写和生物信号处理技术的集成。包括心率阴影、脉搏率分析、血压估计和心电图监测在内的操作，以及它们的生物相容性、安全性和长期稳定性都进行了严格的分析。此外，我们解决了当前的挑战，如环境连续性、信号可靠性、能源运行，并提出了未来的方向，强调可持续材料、人工智能支持的估计和绿色能源系统。将TENG技术与创新的可穿戴平台相结合，代表着向实时、可靠的心血管健康监测迈出了革命性的一步，对远程医疗、预防保健和植入式医疗设备产生了广泛而重大的影响。

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