Nano-Structures & Nano-Objects最新文献

Contrasting effects of ultrasonic modification on the structure, luminescence, and biocompatibility of isostructural Terbium- and Erbium-based MOFs 超声修饰对等结构铽基和铒基mof的结构、发光和生物相容性的对比影响

IF 5.45 Q1 Physics and Astronomy

Nano-Structures & Nano-Objects

Pub Date : 2025-12-05 DOI: 10.1016/j.nanoso.2025.101589

Sandra Loera-Serna , Diana L. Sanchéz-Moreno , Rubén Ruiz-Ramos , Efrain Garrido , G. Alarcón-Flores , Ismael Garduño-Wilches

This research details the synthesis and comprehensive characterization of two isostructural lanthanide metal-organic frameworks (Ln-MOFs), Tb₂BDC₃ and Er₂BDC₃, prepared using a cost-effective room-temperature stirring method. Post-synthetic ultrasonic treatment (for 5, 10, and 15 min) was applied to modulate their physicochemical and functional properties. For the Tb₂BDC₃ MOF, PXRD confirmed structural integrity while crystal size was successfully reduced from 66.42 nm to as low as 37.96 nm. SEM confirmed the preserved needle-like morphology, and EDX verified stable elemental composition. This size reduction significantly enhanced its luminescent properties, more than doubling the quantum yield from 27.59 % to over 57 % (reaching 58.73 % with 5 min of sonication) alongside a significant increase in emission intensity and lifetime. In contrast, the initial Er₂BDC₃ material was synthesized as a metastable two-phase mixture. While sonication promoted a shift toward the stable QACTUJ phase, stability studies revealed that exposure to biological media included a complete structural transformation into a single, stable crystalline phase (PXRD). This reorganization was supported by FTIR evidence of phosphate incorporation and corresponding changes in the UV-Vis-NIR absorption profile. Biological compatibility assessments (Alamar Blue) demonstrated that neither MOF induced cytotoxicity or inhibited HaCaT cells proliferation at concentrations up to 100 µg/mL. These multi-technique findings highlight the effectiveness of ultrasonic modification for tuning the optical properties of Ln-MOFs and underscore their robust stability and excellent biocompatibility, positioning them as promising candidates for a safe and effective platform in bio-imaging and sensing applications.

本研究详细介绍了采用经济高效的室温搅拌法制备的Tb₂BDC₃和Er₂BDC₃两种镧系金属有机骨架（Ln-MOFs）的合成和综合表征。合成后的超声波处理（5、10和15 min）用于调节其物理化学和功能性质。对于Tb₂BDC₃MOF， PXRD证实其结构完整，晶体尺寸从66.42 nm降至37.96 nm。SEM和EDX证实其元素组成稳定。这种尺寸的减小显著增强了它的发光性能，量子产率从27.59 %增加到57 %以上（在5 min的超声下达到58.73 %），同时显著增加了发射强度和寿命。相比之下，最初的Er₂BDC₃材料被合成为亚稳的两相混合物。虽然超声波促进了QACTUJ向稳定相的转变，但稳定性研究表明，暴露于生物介质中包括完整的结构转变为单一、稳定的结晶相（PXRD）。FTIR中磷酸盐掺入的证据和相应的紫外-可见-近红外吸收谱的变化支持了这种重组。生物相容性评估（Alamar Blue）表明，MOF在浓度高达100 µg/mL时既不会诱导细胞毒性，也不会抑制HaCaT细胞的增殖。这些多技术的发现突出了超声波修饰对调整ln - mof光学特性的有效性，强调了它们强大的稳定性和出色的生物相容性，使它们成为生物成像和传感应用中安全有效的平台的有希望的候选者。

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引用次数: 0

Biogenic synthesis of silver nanoparticles using Azadirachta indica and Thevetia peruviana leaf extracts: Characterization, antibacterial analysis, machine learning-based toxicity, and In-Silico molecular docking studies for potential biomedical applications 利用印楝和荆芥叶提取物生物合成纳米银：表征、抗菌分析、基于机器学习的毒性和潜在生物医学应用的硅分子对接研究

IF 5.45 Q1 Physics and Astronomy

Nano-Structures & Nano-Objects

Pub Date : 2025-12-05 DOI: 10.1016/j.nanoso.2025.101592

Shagun Varshney , Ram Pravesh Pandey , Shivam Mishra , Akhilesh Kumar Maurya , Nidhi Mishra

This study reports the eco-friendly synthesis of silver nanoparticles (Ag NPs) using leaf extracts of Azadirachta indica (Neem) and Thevetia peruviana (Kaner). Kaner-derived NPs exhibited superior properties with 24 nm crystallite size and 98.63 % purity, while Neem NPs showed irregular morphology (93.67 % Ag). The combined extract produced uniform, quasi-spherical particles (97.56 % Ag, 25–35 nm diameter), demonstrating synergistic stabilization. XRD analysis confirmed the presence of cubic/tetragonal crystal structures, and FTIR identified hydroxyl, carbonyl, and carboxyl groups as reducing/stabilizing agents. DLS measurements revealed hydrodynamic sizes of 80–180 nm with excellent colloidal stability for Kaner NPs (ζ-potential: −19.5 mV). Antibacterial assays showed concentration-dependent activity, with Kaner NPs demonstrating 12 mm inhibition zones against E. coli at 100 μg/mL and effectiveness against Bacillus subtilis. Molecular docking revealed interactions between the Ag atom and β-lactamase and MurA bacterial enzymes (binding energies: −0.74 to −0.93 kcal/mol), elucidating the antibacterial mechanism. Machine learning analysis (LightGBM) predicted dose-dependent behavior of 25–30 nm Ag-NPs across human cell lines, showing high LC50 values (375–850 µg/mL), ∼100 % viability, and negligible toxicity, confirming biocompatibility. These findings establish plant extract combinations as viable routes for the controlled synthesis of NPs with enhanced biomedical potential.

本研究报道了利用印楝树（印度楝）和秘鲁树（Kaner）的叶提取物环保合成纳米银粒子（Ag NPs）。kaner衍生的NPs具有优异的性能，晶粒尺寸为24 nm，纯度为98.63 %，而Neem衍生的NPs形貌不规则（纯度为93.67 %）。联合提取物产生均匀的准球形颗粒（97.56 % Ag， 25-35 nm直径），具有协同稳定作用。XRD分析证实了立方/四方晶体结构的存在，FTIR鉴定出羟基、羰基和羧基是还原/稳定剂。DLS测量显示，Kaner NPs的水动力尺寸为80-180 nm，具有优异的胶体稳定性（ζ-电位：−19.5 mV）。抗菌实验显示出浓度依赖性，Kaner NPs在100 μg/mL时对大肠杆菌有12 mm的抑制区，对枯草芽孢杆菌有效。分子对接揭示了Ag原子与β-内酰胺酶和MurA细菌酶之间的相互作用（结合能：−0.74 ~−0.93 kcal/mol），阐明了抗菌机制。机器学习分析（LightGBM）预测了25-30 nm Ag-NPs在人类细胞系中的剂量依赖性行为，显示出高LC50值（375-850 µg/mL），生存力~ 100 %，毒性可忽略不计，证实了生物相容性。这些发现确立了植物提取物组合作为控制合成具有增强生物医学潜力的NPs的可行途径。

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引用次数: 0

Enhancing tomato plant micropropagation using copper oxide nanoparticles synthesized from copper complexes of (Z)-N’-(3-ethoxy-2-hydroxybenzylidene)benzohydrazide 以(Z)- n ' -（3-乙氧基-2-羟基苄基）苯并肼铜配合物合成氧化铜纳米颗粒促进番茄植株微繁殖

IF 5.45 Q1 Physics and Astronomy

Nano-Structures & Nano-Objects

Pub Date : 2025-12-04 DOI: 10.1016/j.nanoso.2025.101584

M.S. Meenukutty, Arsha P. Mohan, V.G. Vidya (Professor), V.G. Viju Kumar

Copper oxide nanoparticles (CuO NPs) are emerging as promising tools in plant biotechnology, particularly for improving tissue culture techniques. However, their application in tomato micropropagation is still not well understood. This study explores the impact of CuO NPs on the in vitro regeneration of Solanum lycopersicum L. cv. Sankranti, aiming to determine their effectiveness in promoting plant growth and development under controlled conditions.CuO NPs were synthesized by calcining copper(II) complexes of (Z)-N’-(3-ethoxy-2-hydroxybenzylidene)benzohydrazide, prepared from different copper salts: CuSO₄·5H₂O, CuCl₂·2H₂O, and Cu(NO₃)₂·3H₂O. These complexes were characterized using FT-IR, UV-Vis spectroscopy, mass spectrometry, thermogravimetric analysis (TGA), magnetic studies, and molar conductance. The nanoparticles were further analysed using FT-IR, UV-Vis, PXRD, SEM, and TEM to confirm their structure and morphology. To evaluate their biological effect, CuO NPs were added to Murashige and Skoog (MS) medium at varying concentrations (0.02, 0.2, and 2.0 mg/L) and tested on tomato nodal explants. Statistical analysis using one-way ANOVA confirmed that these enhancements were significant (p < 0.05) when compared to the control group. Overall, this study highlights the potential of CuO NPs, particularly at optimized concentrations, to serve as beneficial micronutrient additives in plant tissue culture. These results support their future application in improving micropropagation efficiency for tomato and possibly other high-value crops.

氧化铜纳米颗粒（CuO NPs）正在成为植物生物技术中有前景的工具，特别是在改善组织培养技术方面。然而，它们在番茄微繁中的应用还不是很清楚。本研究探讨了CuO NPs对番茄植株离体再生的影响。旨在确定它们在受控条件下促进植物生长发育的有效性。以不同的铜盐CuSO₄·5H₂O、CuCl₂·2H₂O和Cu（NO₃）₂·3H₂O为原料，通过煅烧(Z)- n′-（3-乙氧基-2-羟基苄基）苯并肼铜（II）配合物合成CuO NPs。这些配合物通过FT-IR、UV-Vis光谱、质谱、热重分析（TGA）、磁性研究和摩尔电导进行了表征。利用FT-IR、UV-Vis、PXRD、SEM、TEM等分析了纳米颗粒的结构和形貌。为评价CuO NPs的生物学效应，将不同浓度（0.02、0.2和2.0 mg/L）的CuO NPs分别添加到Murashige和Skoog （MS）培养基中，并在番茄外植体上进行试验。使用单因素方差分析的统计分析证实，与对照组相比，这些增强是显著的（p <； 0.05）。总的来说，本研究强调了CuO NPs的潜力，特别是在优化浓度下，作为植物组织培养中有益的微量营养素添加剂。这些结果支持了它们在提高番茄和其他高价值作物的微繁效率方面的未来应用。

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引用次数: 0

AuNPs/chitosan-functionalized silica aerogel nanocomposite from rice husk for high-performance Pb2+ sensing 壳聚糖/壳聚糖功能化二氧化硅气凝胶纳米复合材料对Pb2+的高性能传感

IF 5.45 Q1 Physics and Astronomy

Nano-Structures & Nano-Objects

Pub Date : 2025-12-03 DOI: 10.1016/j.nanoso.2025.101587

Quang Minh Pham , Cam Vi Dao Thi , Tuan Anh Nguyen , Anh-Tuan Vu

A novel AuNPs/chitosan/silica aerogel (Au/Cs/SA) nanocomposite was fabricated and applied as an efficient electrochemical sensor for Pb²⁺ detection. Silica aerogel synthesized from rice husk served as a lightweight, highly porous scaffold, providing large surface area and abundant adsorption sites. Chitosan acted as a biopolymer matrix to immobilize gold nanoparticles (AuNPs), prevent aggregation, and introduce amine and hydroxyl groups for strong Pb²⁺ chelation. Uniformly dispersed AuNPs (∼25–35 nm) further enhanced electron transfer and structural stability, while preserving the intrinsic porosity of the aerogel (252 m²/g compared to 267 m²/g for pure SA). Electrochemical analysis demonstrated a significant improvement in conductivity, with the modified electrode achieving a linear response in the range of 0.5–10 µM, a low detection limit of 0.167 µM, and excellent reproducibility (RSD = 0.76 %). Real-sample tests in tap and river water confirmed the sensor’s accuracy, with recovery rates of 98.22 and 106.65 %, respectively. The synergistic integration of AuNPs, chitosan, and silica aerogel resulted in a stable, sensitive, and environmentally sustainable sensing platform. This work provides a promising strategy for developing next-generation electrochemical sensors for monitoring Pb²⁺ and potentially other toxic heavy metals in complex aquatic environments.

制备了一种新型AuNPs/壳聚糖/二氧化硅气凝胶（Au/Cs/SA）纳米复合材料，并将其作为检测Pb2+的高效电化学传感器。以稻壳为原料合成的二氧化硅气凝胶具有体积大、吸附位点丰富、重量轻、多孔性强等优点。壳聚糖作为一种生物聚合物基质，可以固定金纳米粒子（AuNPs），防止聚集，并引入胺和羟基进行强Pb2+螯合。均匀分散的AuNPs（~ 25-35 nm）进一步增强了电子转移和结构稳定性，同时保持了气凝胶的固有孔隙度（252 m2/g，而纯SA为267 m2/g）。电化学分析表明，修饰电极的电导率显著提高，在0.5-10 µM范围内实现线性响应，低检出限为0.167 µM，重复性好（RSD = 0.76 %）。自来水和河水的实际样品测试证实了传感器的准确性，回收率分别为98.22%和106.65 %。AuNPs、壳聚糖和二氧化硅气凝胶的协同整合形成了一个稳定、敏感和环境可持续的传感平台。这项工作为开发下一代电化学传感器提供了一个有前途的策略，用于监测复杂水生环境中Pb2+和潜在的其他有毒重金属。

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引用次数: 0

Rabi oscillation dynamics and Mollow splitting in cylindrical quantum dots under external fields 外场作用下圆柱形量子点的Rabi振荡动力学和Mollow分裂

IF 5.45 Q1 Physics and Astronomy

Nano-Structures & Nano-Objects

Pub Date : 2025-12-03 DOI: 10.1016/j.nanoso.2025.101593

P.A. Mantashyan , T.A. Sargsian , N. Zeiri , E.M. Kazaryan , C.A. Duque , D.B. Hayrapetyan

Semiconductor quantum dots represent versatile nanoscale systems whose electronic and optical properties can be precisely tuned through their geometry and external perturbations. This paper presents a theoretical investigation of the electronic dynamics in a two-level system confined within a cylindrical GaAs quantum dot embedded in a Ga₁₋ₓAlₓAs matrix. A modified Pöschl–Teller potential model is used to describe the axial confinement, while a parabolic potential is employed to describe the radial confinement. The study focuses on the influence of an external electric field and geometrical parameters on the Rabi oscillation behavior and the resulting Mollow spectrum. The results demonstrate that increasing the electric field intensity enhances the amplitude of Rabi oscillations up to a threshold (F ≈ 2.8 ×10⁵ V/cm), after which amplitude intermixing and saturation occur. Beyond a critical field (F ≈ 1.2 ×10⁶ V/cm), a reappearance of oscillatory gaps is observed, indicating field-induced redistribution between the ground and excited states. Variation of the QD half-width (3–7 nm) affects the oscillation frequency but not its amplitude, underscoring the role of confinement geometry in coherent carrier dynamics. The calculated Mollow spectrum exhibits symmetric sideband splitting with increasing Rabi frequency, maintaining resonance with the laser field and revealing dephasing-induced linewidth broadening. These results provide insight into the coherent control of charge-carrier dynamics in semiconductor quantum dots, contributing to the design of tunable quantum optoelectronic devices.

半导体量子点代表了多功能纳米级系统，其电子和光学特性可以通过其几何形状和外部扰动精确调谐。本文提出了一个理论研究在一个圆柱形的GaAs量子点内嵌在一个Ga₁瞪ₓAlₓAs矩阵的两能级系统的电子动力学。采用改进的Pöschl-Teller势模型描述轴向约束，采用抛物线势模型描述径向约束。研究了外电场和几何参数对拉比振荡行为和由此产生的Mollow谱的影响。结果表明，增加电场强度会使拉比振荡的振幅增强到一个阈值（F≈2.8 ×10 5 V/cm），之后会出现振幅混合和饱和。在临界场（F≈1.2 ×10 26 V/cm）之外，观察到振荡间隙的再现，表明场诱导的基态和激发态之间的再分布。量子点半宽度（3-7 nm）的变化影响振荡频率，但不影响其振幅，强调了约束几何在相干载流子动力学中的作用。计算得到的Mollow谱随Rabi频率的增加呈现对称的边带分裂，与激光场保持共振，显示出脱相引起的线宽展宽。这些结果为半导体量子点中载流子动力学的相干控制提供了见解，有助于可调谐量子光电器件的设计。

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引用次数: 0

Synthesis and self-assembly behavior investigation of paclitaxel-riboflavin conjugates for targeted drug delivery to tumor cells 靶向给药肿瘤细胞紫杉醇-核黄素偶联物的合成及自组装行为研究

IF 5.45 Q1 Physics and Astronomy

Nano-Structures & Nano-Objects

Pub Date : 2025-12-02 DOI: 10.1016/j.nanoso.2025.101588

Dmitry V. Beigulenko , Vladimir O. Orlov , Ekaterina S. Kazakova , Inna V. Zhezher , Aleksander S. Peregudov , Julia A. Malinovskaya , Konstantin A. Kochetkov

Paclitaxel is one of the commonly used anticancer drugs, however it has two major drawbacks such as low solubility and selectivity towards tumor cells. A promising approach to mitigating these problems is the development of targeted paclitaxel delivery systems based on its conjugates, capable of self-assembly. Herein we present novel paclitaxel-riboflavin conjugates that form spherical nanoparticles, which can be simply prepared by nanoprecipitation technique. The nanostructures are characterized by narrow size distribution and colloidal stability. Such nanoparticles can be considered as potential delivery systems for paclitaxel.

紫杉醇是常用的抗癌药物之一，但其对肿瘤细胞的溶解度和选择性较低。缓解这些问题的一个有希望的方法是基于其偶联物的靶向紫杉醇递送系统的发展，能够自组装。本文提出了一种新的紫杉醇-核黄素缀合物，它可以形成球形纳米颗粒，可以通过纳米沉淀法简单地制备。纳米结构具有尺寸分布窄、胶体稳定性好等特点。这种纳米颗粒可以被认为是紫杉醇的潜在递送系统。

引用次数: 0

Innovative approach to purifying petroleum refinery wastewater: The role of photocatalytic functionalized MWCNTs 炼油废水净化的创新方法：光催化功能化MWCNTs的作用

IF 5.45 Q1 Physics and Astronomy

Nano-Structures & Nano-Objects

Pub Date : 2025-12-02 DOI: 10.1016/j.nanoso.2025.101586

Ahmed A. Hadi , Rawaa A. Faris , Khudhair A.K. Al‑Rudaini , Zainab F. Mahdi

The treatment of wastewater generated by oil refineries employing photocatalysis offers a new, environmentally friendly approach. Carbon nanotubes that are multiwall and functionalized (f-MWCNTs) provide a catalyst for this method and utilize sunlight as the energy source. Material and Methods: f-MWCNTs were synthesized from stock solutions of wastewater from Samawah refinery, using ultrasonic-assisted oxidation. To examine the success of the method, we employed FTIR, XRD, FESEM and zeta potential measurements to show that chemical reactivity and absorption capacity increased with f-MWCNTs. These methods revealed that upscale manufacturing will meet any increase in demand for larger supplies. Why Do It: The resulting course of this research was to answer this question. We found that we could use Ordinary Sunlight or sunlight accompanied with a DPSS (diode pumped solid state) laser (532 nm, 120 mW/mm2) as energy source for treatment by f-MWCNTs. Results: The degradation kinetics of refinery wastewater under photocatalysis showed a good fit with pseudo-second-order model, verifying an important connection between the adsorption of pollutants and available active sites on f-MWCNTs. Data indicate that under sunlight, the rate constant (K) was 0.0025 g· mg^-1 · min^-1 and maximum adsorption capacity 55.55 mg/g. Even though its adsorption capacity was smaller (30.30 mg/g), the DPSS laser's irradiation produced a higher rate constant (K=0.0115 g·mg^). Under the conditions of the DPSS laser, we were told that degradation rates peak 71.5 % and 80.91 % under sunlight they%E2 %€%99re reported.

利用光催化处理炼油厂产生的废水提供了一种新的、环保的方法。多壁功能化碳纳米管（f-MWCNTs）为该方法提供了催化剂，并利用阳光作为能源。材料和方法：以Samawah炼油厂废水原液为原料，采用超声辅助氧化法合成f-MWCNTs。为了验证该方法的成功，我们使用了FTIR、XRD、FESEM和zeta电位测量结果表明，添加了f-MWCNTs后，化学反应性和吸收能力都有所提高。这些方法表明，高档制造业将满足任何增加的需求，更大的供应。为什么这样做：这项研究的结果就是要回答这个问题。我们发现我们可以使用普通阳光或阳光伴随着DPSS（二极管泵浦固体）激光器（532 nm, 120 mW/mm2）作为能量源来处理f-MWCNTs。结果：光催化下炼油厂废水的降解动力学符合拟二阶模型，验证了f-MWCNTs对污染物的吸附与活性位点之间的重要联系。数据表明，在日光下，吸附速率常数(K)为0.0025 g·mg^-1·min^-1，最大吸附量为55.55 mg/g。虽然DPSS激光的吸附量较小（30.30 mg/g），但其辐照速率常数较高（K=0.0115 g·mg^）。在DPSS激光条件下，我们得知在日光下降解率峰值为71.5 %和80.91 %，他们报道了%E2 %€%99。

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引用次数: 0

Controlled synthesis and aerosol printing of size-tunable platinum nanoparticles for plasmonic applications 等离子体应用的可调谐铂纳米粒子的控制合成和气溶胶印刷

IF 5.45 Q1 Physics and Astronomy

Nano-Structures & Nano-Objects

Pub Date : 2025-12-01 DOI: 10.1016/j.nanoso.2025.101591

Anna Lizunova, Arina Sanatulina, Artem Novoselov, Egor Khramov, Olesya Vershinina, Ekaterina Kameneva, Ekaterina Kolisova, Gleb Zirnik, Dana Malo, Victor Ivanov

We present a gas-discharge method for controlled synthesis of platinum nanoparticles with tunable sizes ranging from 5 to 105 nm, achieved through precise gas flow regulation and subsequent in-flow sintering at 985 °C. The engineered polydisperse platinum (Pt) nanoparticles (NPs) exhibit size-dependent plasmonic absorption in the ultraviolet (UV) range from 247 to 267 nm. Leveraging dry aerosol direct-printing techniques, we fabricate metal-enhanced nanostructures that boost UV photoluminescence. Experimental results demonstrate the influence of Pt particle size, optical density, and nanostructure design on plasmon-enhanced UV emission from ZnO crystals. A theoretical framework is developed to model the luminescence enhancement of emitters coupled to polydisperse plasmonic Pt nanoparticles. Numerical calculations confirm the dependence of enhancement and quenching effects on both particle size and emitter quantum yield. Obtained experimental and simulation results provide insights for optimizing plasmonic UV light sources and design of metal-enhanced fluorescence (MEF) substrates.

我们提出了一种气体放电方法，通过精确的气体流量调节和随后的985°C的流动烧结，可以控制合成尺寸在5到105 nm之间的铂纳米颗粒。设计的多分散铂纳米粒子（NPs）在247 ~ 267 nm的紫外（UV）范围内表现出与尺寸相关的等离子体吸收。利用干气溶胶直接印刷技术，我们制造金属增强纳米结构，增强紫外线光致发光。实验结果表明，Pt粒子尺寸、光密度和纳米结构设计对ZnO晶体的等离子体增强紫外发射有影响。建立了一个理论框架来模拟多分散等离子体Pt纳米粒子耦合的发射体的发光增强。数值计算证实了增强效应和淬灭效应对粒子尺寸和发射极量子产率的影响。获得的实验和模拟结果为优化等离子体紫外光源和金属增强荧光（MEF）衬底的设计提供了见解。

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引用次数: 0

Compatibility between FORC and micromagnetic modelling for the study of internal magnetic interactions in segmented and non-segmented nanowire arrays 分段和非分段纳米线阵列内部磁相互作用研究中FORC与微磁建模的兼容性

IF 5.45 Q1 Physics and Astronomy

Nano-Structures & Nano-Objects

Pub Date : 2025-12-01 DOI: 10.1016/j.nanoso.2025.101590

A.H.A. Elmekawy , I.S. Dubitskiy , O. Ivankov , S.V. Sotnichuk , K.S. Napolskii , D. Menzel , A.A. Mistonov

The development of three-dimensional nanowire structures made from magnetic materials is a promising area of research for next-generation information storage technologies. Advanced synthetic methodologies have enabled the fabrication of highly ordered arrays of magnetic nanowires, significantly enhancing data recording densities. The fundamental mechanism of writing and reading data in such devices relies on the magnetization reversal process. However, magnetostatic interactions between individual nanowires can present challenges for reliable data storage. This study investigates how geometric parameters influence the magnetic properties of nanowires. Specifically, it examines segmented configurations with alternating magnetic/nonmagnetic layers, as well as non-segmented structures composed solely of magnetic material. Using first-order reversal curve analysis, we systematically explore how varying the aspect ratio (diameter-to-length ratio) of identical magnetic materials affects magnetostatic interactions during magnetization. Our findings demonstrate that precise tuning of the nanowire aspect ratio enables the magnetic properties to be modified as required, with this modification directly correlating with the magnitude and nature of internal magnetic interactions. These results provide valuable insights for optimizing the design of magnetic nanowire-based storage devices, paving the way for enhanced performance in future data storage applications.

磁性材料三维纳米线结构的发展是下一代信息存储技术的一个有前途的研究领域。先进的合成方法使磁性纳米线的高度有序阵列的制造成为可能，显著提高了数据记录密度。在这种设备中写入和读取数据的基本机制依赖于磁化反转过程。然而，单个纳米线之间的静磁相互作用对可靠的数据存储提出了挑战。研究了几何参数对纳米线磁性能的影响。具体来说，它检查了具有交替磁/非磁层的分段结构，以及仅由磁性材料组成的非分段结构。利用一阶反转曲线分析，我们系统地探讨了在磁化过程中改变相同磁性材料的纵横比（直径与长度比）如何影响静磁相互作用。我们的研究结果表明，精确调整纳米线的宽高比可以根据需要修改磁性，这种修改与内部磁相互作用的大小和性质直接相关。这些结果为优化磁性纳米线存储器件的设计提供了有价值的见解，为提高未来数据存储应用的性能铺平了道路。

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引用次数: 0

Corrigendum to “Tenofovir-loaded alginate-chitosan nanoparticles in thermosensitive vaginal gel: A novel strategy for HIV prophylaxis” [Nano-Struct. Nano-Objects 44 (2025) 101570] “热敏阴道凝胶中负载替诺福韦的海藻酸壳聚糖纳米颗粒：一种预防HIV的新策略”的更正[纳米结构]。纳米材料44 (2025)101570]

IF 5.45 Q1 Physics and Astronomy

Nano-Structures & Nano-Objects

Pub Date : 2025-12-01 DOI: 10.1016/j.nanoso.2025.101575

Sonali Mahaparale , Vasanti Patil , Mohd Sayeed Shaikh , Paresh R. Mahaparale

引用次数: 0