Nano-Structures & Nano-Objects最新文献_第4页

Visible light-responsive plasmonic Ag/RGO/TiO2 ternary nanocomposites with enhanced photocatalytic activity 光催化活性增强的Ag/RGO/TiO2三元纳米复合材料

IF 5.45

Nano-Structures & Nano-Objects Pub Date : 2025-06-20 DOI: 10.1016/j.nanoso.2025.101509

Divya K S , Aswathy Vijayakumar , Treesa Karangattuserriyil James , Suresh Mathew

{"title":"Visible light-responsive plasmonic Ag/RGO/TiO2 ternary nanocomposites with enhanced photocatalytic activity","authors":"Divya K S , Aswathy Vijayakumar , Treesa Karangattuserriyil James , Suresh Mathew","doi":"10.1016/j.nanoso.2025.101509","DOIUrl":"10.1016/j.nanoso.2025.101509","url":null,"abstract":"<div><div>Organic pollutants in water now poses serious risks to both human health and ecological systems. Many of these pollutants are insistent and non-biodegradable. The adulteration of fresh water by detrimental substances has compelled researchers to develop advanced, efficient, and cost-effective water remediation techniques and materials. A visible light-responsive plasmonic Ag/RGO/TiO<sub>2</sub> photocatalytic material has been synthesized via facile microwave irradiation. The design of the photocatalytic material shows enhanced photoactivity under visible light compared to TiO<sub>2</sub> and RGO/TiO<sub>2</sub>. The Ag doping had effectively shifted the valence band edge potential increasing the oxidation power of the ternary hybrid. Among different ratios of Ag content, AGT III with 0.02 g Ag exhibits the highest photocatalytic activity toward photocatalytic degradation of rhodamine (RhB) under visible light. This improved photocatalytic activity is due to the significantly narrowed bandgap and enhanced electronic conductivity. The active species involved in photocatalytic degradation have been studied using various scavengers. The results from this investigation have a telling effect on the facile fabrication of an effective photocatalyst, which can be used for many applied applications.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"43 ","pages":"Article 101509"},"PeriodicalIF":5.45,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144330576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A molecular dynamics approach to investigate the thermal performance of silica-aerogel/PCM at different magnetic field frequencies 用分子动力学方法研究不同磁场频率下二氧化硅-气凝胶/PCM的热性能

IF 5.45

Nano-Structures & Nano-Objects Pub Date : 2025-06-19 DOI: 10.1016/j.nanoso.2025.101505

Narinderjit Singh Sawaran Singh , Rassol H. Rasheed , Younis Mohamed Atiah Al-zahy , Murtadha M. Al-Zahiwat , Soheil Salahshour , Maboud Hekmatifar

{"title":"A molecular dynamics approach to investigate the thermal performance of silica-aerogel/PCM at different magnetic field frequencies","authors":"Narinderjit Singh Sawaran Singh , Rassol H. Rasheed , Younis Mohamed Atiah Al-zahy , Murtadha M. Al-Zahiwat , Soheil Salahshour , Maboud Hekmatifar","doi":"10.1016/j.nanoso.2025.101505","DOIUrl":"10.1016/j.nanoso.2025.101505","url":null,"abstract":"<div><div>The significance of advanced energy storage methods is underscored by the increasing demand for renewable energy, which is a result of the need to reduce greenhouse gas emissions and the high cost of gas. Silica aerogels and phase change materials provide effective solutions for temperature regulation and thermal energy storage. This study examines the impact of magnetic field frequency on the thermal performance of a cubic silica aerogel/phase change material nanostructure that contained CuO nanoparticles. It capitalized on the superior thermal insulation properties of silica aerogels to enhance energy conservation and minimize environmental impact. The utilization of a molecular dynamic simulation enabled us to investigate the movement of heat between particles and their unique characteristics. The impact of various magnetic field frequencies on critical parameters, such as density, temperature, thermal conductivity, heat flux, and charging/discharging periods, was investigated through molecular dynamics simulations. The results indicate that the maximum density increased from 0.999 to 1.035 atoms/Å³ as the magnetic field frequency increased to 0.05 fs⁻¹ . In contrast, the maximum velocity diminishes from 0.0092 to 0.0081 Å/fs, and the maximum temperature decreases from 762 K to 743 K. The heat flux and thermal conductivity diminish to 69.88 W/m² and 1.82 W/m·K, respectively, as the magnetic field frequency increases. It is important to note that the discharging time decreased slightly to 8.06 ns at a frequency of 0.05 fs⁻¹ , while the charging time increased, reaching 7.12 ns. These findings underscore the potential of the combination of PCMs with silica aerogels to improve thermal management and energy storage applications through the application of magnetic fields.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"43 ","pages":"Article 101505"},"PeriodicalIF":5.45,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144312704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of multi-factorial composition on the size of superparamagnetic iron oxide nanoparticles (SPIONs) using Box-Behnken statistical design 采用Box-Behnken统计设计研究了多因子组成对超顺磁性氧化铁纳米颗粒（SPIONs）尺寸的影响

IF 5.45

Nano-Structures & Nano-Objects Pub Date : 2025-06-19 DOI: 10.1016/j.nanoso.2025.101504

Siau Wui Chin , Min Li Yong , Sarah Lee Tung Law , Omar Hassanien , Jack Hau Ooi , Liang Ee Low , Kooi Yeong Khaw , Chee Wun How , Yong Sze Ong

{"title":"Impact of multi-factorial composition on the size of superparamagnetic iron oxide nanoparticles (SPIONs) using Box-Behnken statistical design","authors":"Siau Wui Chin , Min Li Yong , Sarah Lee Tung Law , Omar Hassanien , Jack Hau Ooi , Liang Ee Low , Kooi Yeong Khaw , Chee Wun How , Yong Sze Ong","doi":"10.1016/j.nanoso.2025.101504","DOIUrl":"10.1016/j.nanoso.2025.101504","url":null,"abstract":"<div><div>The physicochemical properties of superparamagnetic iron oxide nanoparticles (SPIONs), particularly particle size, critically influence their performance in biomedical applications such as drug delivery, imaging, and magnetic hyperthermia. However, co-precipitation, a commonly used synthesis method for SPIONs, often leads to broad particle size distribution due to limited control over key reaction parameters. This study aims to optimise the synthesis of SPIONs by evaluating the influence of pH, surfactant concentration (PEG-400), and sonication time on particle size using a Box-Behnken response surface methodology (RSM). A total of 15 experimental runs were conducted, and a linear model was revealed to be the most suitable prediction model for particle size. The optimal synthesis conditions of 10 min of sonication time, 1 % PEG-400 and pH 9 produced SPIONs with a particle size of 145 nm. However, the analysis of variance did not indicate significant interactions among the parameters, potentially due to limitations in nanoparticle size measurement methods. Transmission electron microscopy (TEM) confirmed the spherical morphology and aggregation behaviour of the nanoparticles. Furthermore, <em>in vitro</em> cytotoxicity on 4T1 breast cancer cells demonstrated that the SPIONs were non-toxic up 25 μg/mL. These findings provide a valuable reference for the controlled synthesis of SPIONs and support their potential application in cancer theranostics.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"43 ","pages":"Article 101504"},"PeriodicalIF":5.45,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144322867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Structural and electrochemical impact of Co-doping in BiVO4 nanostructured supercapacitors 共掺杂对BiVO4纳米结构超级电容器结构和电化学的影响

IF 5.45

Nano-Structures & Nano-Objects Pub Date : 2025-06-19 DOI: 10.1016/j.nanoso.2025.101510

Vilas S. Jadhav, Kunal D. Gaikwad

{"title":"Structural and electrochemical impact of Co-doping in BiVO4 nanostructured supercapacitors","authors":"Vilas S. Jadhav, Kunal D. Gaikwad","doi":"10.1016/j.nanoso.2025.101510","DOIUrl":"10.1016/j.nanoso.2025.101510","url":null,"abstract":"<div><div>In this work, we studied the effect of Co-doping in BiVO<sub>4</sub> nanostructures for improved supercapacitor performance. A one-pot hydrothermal method was employed to synthesize Co-doped BiVO<sub>4</sub> nanostructures at varying dopant concentrations (5 % and 10 %) and to investigate their morphologies and structural characteristics using various analytical techniques. XRD patterns revealed the presence of monoclinic and tetragonal phases, resulting from the synergistic effects of Co-doping and percentage tuning during the synthesis process. FTIR spectra identified the metal oxygen vibrational modes. UV-Vis analysis revealed tunable optical band gaps, indicating improved electronic properties resulting from Co-doping. An electrochemical study, including cyclic voltammetry (CV) and Galvanostatic charge-discharge (GCD), of the BiVO<sub>4</sub> material revealed an impressive enhancement in supercapacitor performance following Co-doping. The 10 % Co-doped BiVO<sub>4</sub> electrode exhibited a specific capacitance (Cs) of 211.00 F/g under a 10 mV/s CV scan rate, which significantly outperformed that of the 5 % Co-doped (170.2 F/g) and undoped (34.00 F/g) counterparts. Although GCD investigations revealed that 5 % Co-doping yielded the longest discharge times at low current densities (∼70 s for 5 % Co compared to ∼47 s for 10 % Co at 0.5 mA/g), both doped samples significantly outperformed the undoped BiVO<sub>4</sub>. The results show the significant impact of Co-doping on the structural and electrochemical properties of BiVO<sub>4</sub>, establishing Co-doped BiVO<sub>4</sub> as an excellent candidate for energy storage devices.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"43 ","pages":"Article 101510"},"PeriodicalIF":5.45,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144312703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The futures of optical properties of nanocomposites on base of GO-PVA-Ag nanowires 基于GO-PVA-Ag纳米线的纳米复合材料光学性能的展望

IF 5.45

Nano-Structures & Nano-Objects Pub Date : 2025-06-18 DOI: 10.1016/j.nanoso.2025.101507

Mahammad Baghir Baghirov, Mustafa Muradov, Goncha Eyvazova

{"title":"The futures of optical properties of nanocomposites on base of GO-PVA-Ag nanowires","authors":"Mahammad Baghir Baghirov, Mustafa Muradov, Goncha Eyvazova","doi":"10.1016/j.nanoso.2025.101507","DOIUrl":"10.1016/j.nanoso.2025.101507","url":null,"abstract":"<div><div>In this study, graphene oxide (GO) and silver nanowires (AgNWs) were synthesized using modified Hummers and polyol methods, respectively, and incorporated into a polyvinyl alcohol (PVA) matrix to prepare GO/AgNWs/PVA nanocomposites with varying GO concentrations (1 %, 2 %, 3 %, and 5 %). Structural characterization using XRD revealed that increasing GO content reduced the crystallinity of the PVA matrix, while AgNWs retained their crystalline structure. TEM and SEM analyses showed that the distribution of fillers was homogeneous, although higher GO content led to increased porosity and microcracks on the surface. Optical studies demonstrated that the band gap of the composites decreased systematically with higher GO content from 1.83 eV at 1 % GO to 1.47 eV at 5 % GO in the GO/AgNWs/PVA samples indicating strong interaction between the free electrons of AgNWs and charge carriers in GO. The formation of an additional potential field at the metal–semiconductor interface significantly influenced the energy spectrum of the composites. These results suggest that careful control of the GO and AgNW content allows tailoring of the structural and optical properties of polymer-based nanocomposites for optoelectronic applications.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"43 ","pages":"Article 101507"},"PeriodicalIF":5.45,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144307582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nanostructure formation on Ti-Nb alloys promote better surface properties designed for biological applications 纳米结构在Ti-Nb合金上的形成促进了更好的表面性能设计用于生物应用

IF 5.45

Nano-Structures & Nano-Objects Pub Date : 2025-06-17 DOI: 10.1016/j.nanoso.2025.101508

M.C. Rossi , N. Rangel , DM. Silva e Silva , P.AB. Kuroda , V. Amigó , C.R.M. Afonso

{"title":"Nanostructure formation on Ti-Nb alloys promote better surface properties designed for biological applications","authors":"M.C. Rossi , N. Rangel , DM. Silva e Silva , P.AB. Kuroda , V. Amigó , C.R.M. Afonso","doi":"10.1016/j.nanoso.2025.101508","DOIUrl":"10.1016/j.nanoso.2025.101508","url":null,"abstract":"<div><div>Anodizing was employed to produce organized TiO₂ nanotubular structures (NTs) on two titanium alloys: Ti-15Nb (TN15), which exhibits both bcc and hcp crystal structures (α′ + β phases), and Ti-40Nb (TN40), characterized by a stable β phase. The electrochemical treatment was conducted under different potentials (10 V and 20 V) and durations (1 h and 2 h). Following anodization, samples underwent thermal treatment to transform the initially amorphous NT layers into crystalline phases. X-ray diffraction (XRD) confirmed the amorphous nature of the as-anodized surfaces, which crystallized into anatase and rutile phases after heating. Structural and microstructural features were analyzed via XRD, scanning electron microscopy (SEM), and atomic force microscopy (AFM), which were used to assess surface roughness, NT length, and diameter. Wettability and surface free energy were evaluated using the sessile drop contact angle method. This study investigates how anodization parameters and alloy composition affect the crystallinity, morphology, and surface properties of TiO₂ NTs. TN15 samples exhibited α-phase Ti with a mix of anatase and rutile, while TN40 samples showed dominant β-phase Ti and greater rutile content. NTs on TN15 were more uniformly aligned, whereas TN40 formed NTs in isolated domains. Longer anodization times and higher voltages increased NT length and diameter. Notably, surface wettability improved with greater anatase content—particularly in TN15–2h-10V (contact angle ∼7°)—highlighting the influence of Nb content, anodization conditions, and heat treatment on tuning NT functionality for biomedical applications.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"43 ","pages":"Article 101508"},"PeriodicalIF":5.45,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144297519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Insights into the floral senescence effects of nanoparticles 纳米粒子对花卉衰老的影响

IF 5.45

Nano-Structures & Nano-Objects Pub Date : 2025-06-10 DOI: 10.1016/j.nanoso.2025.101501

Vuk Uskoković

{"title":"Insights into the floral senescence effects of nanoparticles","authors":"Vuk Uskoković","doi":"10.1016/j.nanoso.2025.101501","DOIUrl":"10.1016/j.nanoso.2025.101501","url":null,"abstract":"<div><div>Flowers could be valuable addenda to nanomedicine labs as <em>in vivo</em> models crossing the gap between the cell culture and small mammals. However, as it is shown here, floral models continue to be predominantly utilized within resource-limited research environments and remain largely underrepresented in mainstream biomedical investigations conducted by well-funded institutions in the developed world. The ability to delay the senescence of Orange Jubilee wildflowers was tested here on three types of nanoparticles: selenite-doped hydroxyapatite (HAp), citrate-stabilized HAp, and superparamagnetic iron oxide. Integration of selenite into the HAp crystal lattice produced a mild increase in the senescence rate relative to HAp. Iron oxide nanoparticles produced nil effects on senescence when added as powders and marginal effects when delivered as colloids. Colloidal stabilization of HAp nanoparticles with citrates significantly extended the flower viability, which was due to the ability of citrates to: (i) disperse the nanoparticles and thus facilitate their penetration into herbal tissues via their upward transfer along the xylem, and (ii) impart moderate acidity to the medium and thus intrinsically inhibit the growth of bacteria that block the flower stem and obstruct the water uptake. Orange Jubilee flowers prove as a solid, albeit pleiotropic model for assessing the biological barrier permeation and antibacterial activity of colloids and fine powders. Quests for similar <em>in vivo</em> models may result in less ambiguous and more effective models for the preclinical assessment of nanoparticles for uses in biomedicine.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"43 ","pages":"Article 101501"},"PeriodicalIF":5.45,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144254206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Green synthesis of ZnO nanoparticles using Citrullus lanatus fruit extract and their potential for microwave absorption 西瓜果实提取物绿色合成纳米氧化锌及其微波吸收潜力

IF 5.45

Nano-Structures & Nano-Objects Pub Date : 2025-06-09 DOI: 10.1016/j.nanoso.2025.101502

Banaz Shahab Haji , Azeez Abdullah Barzinjy , Asia Omer Abbas , Omer Kaygili , Marwan Suleiman Mousa

{"title":"Green synthesis of ZnO nanoparticles using Citrullus lanatus fruit extract and their potential for microwave absorption","authors":"Banaz Shahab Haji , Azeez Abdullah Barzinjy , Asia Omer Abbas , Omer Kaygili , Marwan Suleiman Mousa","doi":"10.1016/j.nanoso.2025.101502","DOIUrl":"10.1016/j.nanoso.2025.101502","url":null,"abstract":"<div><div>Nanotechnology is a developing arena of science focuses on the manufacturing use of nanoparticles (NPs), of the size ranges between 1 and 100 nm, which are categorized into different classes such as inorganic, organic, ceramic and carbon-based nanoparticles. Zinc Oxide (ZnO) nanoparticles (NPs) are perceiving amazing progress during the past few periods due to its exclusive and vital properties in many applications. Newly, green synthesis method of NPs is competing in contradiction of traditional chemical and physical methods by avoiding the use of many toxic compounds, and costly equipment. Accordingly, in this study, watermelon <em>(Citrullus lanatus)</em> rind extract has been used for producing ZnO NPs as a reducing, capping and stabilizing agents. This technic is simple, environmentally friendly and green. UV–vis spectra indicated the formation of Zinc Oxide nanoparticles represented by the change of a colorless liquid to brownish solution. The involvement of the functional groups presents in <em>(Citrullus lanatus)</em> rind extract in both the reduction and capping of nanoparticles was shown through Fourier transform infrared spectroscopy (FTIR). Additionally, the mechanism of formation ZnO NPs from <em>(Citrullus lanatus)</em> rind extract has been thoroughly delineated. This study displayed that <em>(Citrullus lanatus)</em> rind extract is a suitable medium for manufacturing spherical, monodisperse, highly crystalline and wide band gap ZnO NPs. This study emphasizes the potential of ZnO thin films as a promising material for microwave absorption applications, particularly for coating microwave oven gates. It also paves the way for using sustainable resources to develop high-performance materials capable of absorbing unwanted microwave radiation.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"43 ","pages":"Article 101502"},"PeriodicalIF":5.45,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144241668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Luminescent carbon quantum dots from multi-walled carbon nanotubes: A sustainable green synthesis approach 多壁碳纳米管发光碳量子点：一种可持续的绿色合成方法

IF 5.45

Nano-Structures & Nano-Objects Pub Date : 2025-06-07 DOI: 10.1016/j.nanoso.2025.101503

Jithin Varghese , K.C. Sanal , Oxana V. Kharissova , Alexander L. Nikolaev , Nayely Pineda Aguilar , David Avellaneda Avellaneda , Boris I. Kharisov

引用次数: 0

Contact melting in bimetallic Cu-Ag nanolayer: Molecular dynamics simulation and fractal analysis 双金属Cu-Ag纳米层的接触熔化：分子动力学模拟与分形分析

IF 5.45

Nano-Structures & Nano-Objects Pub Date : 2025-06-06 DOI: 10.1016/j.nanoso.2025.101496

V.M. Samsonov, N.B. Kuz’min, N.Yu. Sdobnyakov, I.V. Talyzin, P.V. Komarov

{"title":"Contact melting in bimetallic Cu-Ag nanolayer: Molecular dynamics simulation and fractal analysis","authors":"V.M. Samsonov, N.B. Kuz’min, N.Yu. Sdobnyakov, I.V. Talyzin, P.V. Komarov","doi":"10.1016/j.nanoso.2025.101496","DOIUrl":"10.1016/j.nanoso.2025.101496","url":null,"abstract":"<div><div>Contact melting (CM) is a constituent of a number of technologies, including soldering, sintering, and eutectic bonding. In particular, the chip-level bonding between electronic components may be noted. Our present paper shines a light on regularities and mechanisms of CM at the nanoscale. In our molecular dynamics experiments we simulated CM in a bimetallic Cu-Ag nanolayer using the embedded atom method. In particular, the kinetic dependencies of the potential term into the specific (per atom) internal energy, the sample sizes, the radial distribution function, and the volume concentration of both kinds of atoms were found to reveal and analyze sequential stages of CM. A special emphasis is made on employing the fractal dimension as an important and new descriptor of CM. A concept has been developed of the dynamic evaluation of the fractal dimension of instantaneous images of atomic configurations at all the stages of CM. A conclusion is made that kinetics of the fractal dimension and information entropy adequately reflects the growth of the conventional thermodynamic entropy during the CM process. The vacancy pore formation at the earliest stage of CM (before nucleation and growth of a liquid phase) was discovered thanks to employing, the Connolly algorithm used before to construct Connolly surfaces in organic materials only. Thus, for the first time, we observed a manifestation of the Kirkendall effect in the course of CM at the nanoscale.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"43 ","pages":"Article 101496"},"PeriodicalIF":5.45,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144221499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0