Materials Today Nano最新文献

{"title":"Plasma-driven 1D to 2D nanomaterial phase transition","authors":"Martin Košiček ,&nbsp;Oleg Baranov ,&nbsp;Janez Zavašnik ,&nbsp;Uroš Cvelbar","doi":"10.1016/j.mtnano.2025.100645","DOIUrl":"10.1016/j.mtnano.2025.100645","url":null,"abstract":"<div><div>The increasing demand for novel nanomaterials in nanotechnology requires innovative techniques to adapt their properties and morphologies, highlighting the importance of strategies for controlled conversions between different material morphologies. This research reveals a unique plasma-assisted anion-exchange phase transformation which facilitates the conversion from 1D model of copper oxide nanowires into 2D copper sulfide. Our investigation reveals that plasma-assisted sulfurization triggers the onset of 2D structure evolution from the original nanowire, followed by the complete conversion of the original 1D copper oxide into 2D copper sulfide. This dimensionality transformation is likely driven by the accumulation of surface charges in the plasma environment, particularly increased in regions of heightened curvatures in the nascent copper sulfide phase. The enhanced electric field in these zones directs the flow of charged plasma species to these specific regions. In addition, the preferential adsorption of sulfur species at the edges of the nanoplates drives the diffusion of copper ions from the core of the nanowires outward to the edges of the forming nanoplates, where sulfurization predominantly occurs. These suggestions were supported by theoretical modeling of the processes. The morphology of the transformed nanowires depends on the original diameter of the nanowires and the duration of the treatment. Finally, the study highlights the potential of plasma-assisted techniques for advanced processing of nanomaterials, enabling precise and distinct nanomodifications.</div></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"31 ","pages":"Article 100645"},"PeriodicalIF":8.2,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144262876","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}

{"title":"Continuous synergistic double imprinting idea based on MXene-nanocomposite membrane for efficient identification and isolation","authors":"Ming Yan ,&nbsp;Zequan Diao ,&nbsp;Rongxin Lin ,&nbsp;Hang Cui ,&nbsp;Faguang Ma ,&nbsp;Yilin Wu","doi":"10.1016/j.mtnano.2025.100642","DOIUrl":"10.1016/j.mtnano.2025.100642","url":null,"abstract":"<div><div>Ti₃C₂Tx (MXene) has been highly sought after by researchers around the world due to its typical two-dimensional layered structural features and abundant surface groups. Herein, we fix MXene on the membrane by means of a decompression filtration device, and the formation of interlayer domain-limited channels helps to enhance the construction efficiency of imprinting sites. Herein, Ag-PDA@MXene@PDA@SiO₂-PVDF double imprinted hybrid matrix membranes (APMS-DIMs) were prepared using a synergistic double-imprinting strategy and effectively utilized to identify and isolate artemisinin (Ars). Above all, SiO₂-PVDF nanofibre membranes (NMs) was synthesized via electrostatic spinning and self-polymerization of dopamine (PDA) was carried out to construct the first layer of imprint. Meanwhile, PDA enhanced the oxidation resistance of MXene and the interfacial stability of SiO₂-PVDF NMs. The second layer imprint was then constructed on the surface of the MXene and within the interlayer channels. When Ars passed through the membrane, it was specifically recognized and adsorbed several times by the bilayer blotting sites constructed using the synergistic double imprinting strategy, which significantly enhanced the selective adsorption efficiency of Ars. Therefore, the rebinding ability (73.15 mg g⁻¹) and selectivity factors (<em>β</em>_{Artesunate/Ars} and <em>β</em>_{Dihydroartemisinin/Ars} were 4.47 and 3.93) of the membrane to Ars have been greatly improved. This study demonstrated that precise recognition sites were successfully constructed on APMS-DIMs with high levels of stability and recombination ability, which have potential for practical application.</div></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"31 ","pages":"Article 100642"},"PeriodicalIF":8.2,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144241517","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}

{"title":"Van der Waals contacts and layer-dependent Fermi level pinning at WSe2/metal interfaces","authors":"Xiaohui Hu ,&nbsp;Xin Pei ,&nbsp;Tao Xu ,&nbsp;Arkady V. Krasheninnikov ,&nbsp;Litao Sun","doi":"10.1016/j.mtnano.2025.100646","DOIUrl":"10.1016/j.mtnano.2025.100646","url":null,"abstract":"<div><div>Strong Fermi level pinning (FLP) at the interface between WSe₂ and metal electrodes can give rise to high Schottky barriers, which would degrade the performance of electronic device. Therefore, the weak FLP is desirable as it allows decreasing Schottky barrier height (SBH) and achieving the low contact resistance. Herein, we demonstrate that the van der Waals (vdW) contacts between WSe₂ and metals can greatly weaken the FLP and affect SBH. As compared to the direct contacts, the fewer metal-induced gap states and smaller interface dipoles are observed in WSe₂/metal vdW contacts, which leads to the reduced FLP effect. In addition, we found that the FLP strength is also dependent on the number of WSe₂ layers. Furthermore, we analyze the origin of the pinning factor deviation from Schottky-Mott limit in the WSe₂/metal vdW contacts and find that the deviation originates from the interface potential difference and Fermi-level shift. Benefiting from the weak FLP, the low n-type and p-type Schottky and Ohmic contacts can be obtained in the WSe₂/metal vdW contacts by choosing metal electrodes and number of WSe₂ layers. These findings illustrate that creating vdW contacts can be an effective approach for developing high performance ambipolar WSe₂-based electronic devices.</div></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"31 ","pages":"Article 100646"},"PeriodicalIF":8.2,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144279279","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}

{"title":"Preparation and 3D network structure optimization of SiC and SiC@Fe3Si nanofibers for enhanced electromagnetic wave absorption","authors":"Dandan Xiang ,&nbsp;Qinchuan He ,&nbsp;Congmin Fan ,&nbsp;Yiqun Wang ,&nbsp;Xuemin Yin ,&nbsp;Changcong Wang","doi":"10.1016/j.mtnano.2025.100644","DOIUrl":"10.1016/j.mtnano.2025.100644","url":null,"abstract":"<div><div>The Electromagnetic wave absorbing materials (EWAM) prepared by coupling magnetic elements with SiC nanofibers have excellent comprehensive characteristics, including ample network free spaces, numerous interfacial polarization sites and enhanced dielectric dissipation capacity, exhibiting critical potential for 5G communication systems and artificial intelligence applications. Based on the design of three-dimensional (3D) network structure, nanofiber precursors were prepared by electrostatic spinning, and then SiC nanofibers and SiC@Fe₃Si composite nanofibers were synthesized by combination with carbothermal reduction reaction. The effective absorption bandwidth of SiC nanofibers reaches up to 6.16 GHz and the minimum reflection loss (RL_min) is −66.07 dB. After the introduction of magnetic components, the RL_min of SiC@Fe₃Si composite nanofibers (SC3-F) is increased to −73.75 dB. Scanning electron microscopy and electromagnetic parameters demonstrate the synergistic mechanism of interfacial/dipole polarization and magnetic coupling, revealing its important contribution to multiple reflections and impedance matching. In addition, further theoretical evaluations of the different domains were carried out through CST analog simulations, illustrating the effect of the materials on radar stealth. This study provides new ideas for the design of new-generation high-performance EWAM materials and lays the foundation for their extensive development in multifunctional applications.</div></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"30 ","pages":"Article 100644"},"PeriodicalIF":8.2,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144154330","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}

{"title":"Genomic instability and shear stress influence quantum dot-induced endothelial cell responses and gene expression","authors":"Yasmin Abdelkader ,&nbsp;Mahmoud Abdelkarim ,&nbsp;Madhumita Suresh ,&nbsp;Tulio J. Lopera ,&nbsp;Simranpreet Dhaliwal ,&nbsp;Shahla Shojaei ,&nbsp;Lucas J. Pope ,&nbsp;Qian Liu ,&nbsp;Pingzhao Hu ,&nbsp;Hisashi Haga ,&nbsp;Kelsie L. Thu ,&nbsp;Simona Giunta ,&nbsp;Seiichiro Ishihara ,&nbsp;Max Anikovskiy ,&nbsp;Hagar I. Labouta","doi":"10.1016/j.mtnano.2025.100641","DOIUrl":"10.1016/j.mtnano.2025.100641","url":null,"abstract":"<div><div>Little is known about endothelial cell responses to nanoparticles under conditions simulating dysfunctional endothelium, a hallmark of vascular diseases, cancer, and aging. Endothelial genomic abnormalities and shear stress on the endothelial cells due to blood flow are key components of this microenvironment. Using organ-on-a-chip technologies and transcriptomics, we investigated the effects of genomic instability and shear stress on endothelial cell-level and RNA-level responses to model nanoparticles, CdSe/ZnS and InP/ZnS quantum dots (QDs). QDs were selected for their diagnostic potential, photostability enabling cellular tracking, and high uptake attributed to their ultrasmall size (13.9 and 3.9 nm). To model genomic instability, HUVEC cells were treated with monastrol (mt-HUVECs), and both control and mt-HUVEC models were exposed to 5 nM QD concentration. Transcriptomic analysis showed that Cdc20 gene was more downregulated in mt-HUVECs under dynamic flow (−5.68 vs dynamic HUVECs; −6.4 vs static mt-HUVECs), indicating a synergistic effect of flow and genomic instability on cell cycle suppression. Exposure to CdSe/ZnS QDs under dynamic conditions led to downregulation of the adherens junction pathway, which is consistent with the observed higher uptake and upregulation of heat shock and inflammatory response pathways. In contrast, InP/ZnS QDs upregulated tight junctions, explaining their lower uptake. Both QDs induced apoptotic pathway upregulation, with CdSe/ZnS QDs having more detrimental effects on viability. Combining genomic instability and shear stress resulted in different cell phenotypes that led to distinct cell responses and cell uptake of QDs. These findings guide future studies to better characterize endothelial responses to nanoparticles under biologically relevant conditions.</div></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"31 ","pages":"Article 100641"},"PeriodicalIF":8.2,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144194924","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}

{"title":"Effectiveness of carbon nanomaterials as lubricant additives: Recent review","authors":"Anthony Chukwunonso Opia ,&nbsp;Mohd Fadzli Bin Abdollah ,&nbsp;Samion Syahrullail ,&nbsp;Hilmi Amiruddin ,&nbsp;Chinedu Stanley Mamah ,&nbsp;Ibham Veza","doi":"10.1016/j.mtnano.2025.100643","DOIUrl":"10.1016/j.mtnano.2025.100643","url":null,"abstract":"<div><div>Wear and friction are unavoidable in mechanical motion, leading to energy loss, low productivity, damage to machine parts, and high operating costs; therefore, the use of appropriate lubricants is essential. To solve these unwanted conditions and protect the environment, lubricants containing nano-additives could effectively perform the operations. As a result, it is imperative to understand the effectiveness trajectory of various kinds of carbon nanomaterials towards enhancing lubricating performance. Therefore, this review paper compiles the advancement and contributions of carbon nanomaterials to tribology in recent years. The development of different carbon nanotubes and nanoparticles was investigated, and studies conducted between 2010 and 2024 showed notable improvements over time. The review identified the potential influencing factors that impact the tribological responsiveness of carbon nanomaterials, including the nano-additives' dispersion in lubricants, effects of their microstructure and particle sizes. This paper provides a summary of the accomplishments of graphene, fullerene, carbon nanotubes, carbon nanodiamonds, carbon nano-onions and carbon spheres in their application as lubricant additives. A thorough analysis of graphene and carbon nanotubes on their exceptional lubricant additives was conducted. According to reports in the literature, graphene is the most well-known and extensively utilized carbon nanomaterial for exceptional tribological qualities. Significant decreases in wear and friction are facilitated by its capacity to smooth surfaces, create protective layers, and act as a third-body lubricant. To fully utilize graphene's potential in a variety of tribological applications, further research into functionalization and dispersion processes is essential thus providing insight into their synthesis and design.</div></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"30 ","pages":"Article 100643"},"PeriodicalIF":8.2,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144154339","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}

{"title":"New horizons for electromagnetism of functional bionanomaterials","authors":"C. Brosseau","doi":"10.1016/j.mtnano.2025.100640","DOIUrl":"10.1016/j.mtnano.2025.100640","url":null,"abstract":"<div><div>Electro-mechano-biology (EMB) develops and examines different uses of electric excitation that span the electromagnetic spectrum from dc to microwaves to study and control mechanical deformation of cells, focusing on the discovery and application of new phenomena. In this work, we highlight this approach and its limitations to understand the cross-properties between electrical and mechanical modeling of functional biomaterials. Several illustrations based on multiphysics multiscale finite element simulations are proposed. Collectively, these data have important phenomenological implications for modeling the electromechanical effects of cell and nucleus morphology in a confined geometry. We discuss the current challenges for future developments in the analysis of electromagnetism of functional bionanomaterials.</div></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"30 ","pages":"Article 100640"},"PeriodicalIF":8.2,"publicationDate":"2025-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144154340","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}

{"title":"Plasma-irradiated hafnia ferroelectrics for high-performance flexible thin film transistors","authors":"Hyun Yeol Rho ,&nbsp;Arindam Bala ,&nbsp;Anamika Sen ,&nbsp;Uisik Jeong ,&nbsp;Jimin Kim ,&nbsp;Pavan Pujar ,&nbsp;Sunkook Kim","doi":"10.1016/j.mtnano.2025.100639","DOIUrl":"10.1016/j.mtnano.2025.100639","url":null,"abstract":"<div><div>Integrating unconventional HfO₂-based ferroelectrics in thin film transistors (TFTs) has proven effective in enhancing performance by stabilizing negative capacitance (NC). This is achieved by incorporating the ferroelectric in series with a high-permittivity dielectric as a passive TFT component. However, implementing this on flexible, temperature-sensitive substrates presents significant challenges. The primary focus in TFTs on flexible substrates is their fabrication with a considerably low thermal budget to avoid damaging the underlying substrate. Herein, we introduce an approach to stabilize the desired ferroelectric polar phase of hafnium zirconium oxide (Hf_0.5Zr_0.5O₂, HZO) through superficial plasma treatment in the argon environment. Plasma energizes Ar⁺ ions, whose bombardment induces oxygen vacancies, thereby stabilizing the desired orthorhombic phase at low temperatures. The IGZO-channel TFTs incorporating HZO/HfO₂ passive stacks exhibit a substantial enhancement in subthreshold swing (SS), achieving a 72 % reduction from 147 mV/dec to 41 mV/dec, along with a notable increase in on-state currents (<em>I</em>_on) compared to conventional TFTs utilizing only HfO₂ dielectrics. The field-effect mobility (μ) significantly improves from 5.7 ± 0.2 to 28.8 ± 6.2 cm²/V·s. Flexible TFTs fabricated on polyimide substrates also show excellent mechanical stability, maintaining consistent <em>I</em>_on even after 10,000 bending cycles. Moreover, these TFTs exhibit enhanced μ of 72 ± 13.5 cm²/V·s in the flat state and 33.9 ± 3.8 cm²/V·s under bending—both notably higher than those of TFTs without the HZO-assisted NC effect.</div></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"31 ","pages":"Article 100639"},"PeriodicalIF":8.2,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144170447","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}

{"title":"In-situ CVD grown WS2-MoS2 lateral heterostructure with alloyed Interface: Strong photoluminescence enhancement and high on-off ratio field effect transistors","authors":"Abdul Kaium Mia ,&nbsp;Sourav Dey ,&nbsp;Lubomir Vanco ,&nbsp;Viliam Vretenar ,&nbsp;P.K. Giri","doi":"10.1016/j.mtnano.2025.100638","DOIUrl":"10.1016/j.mtnano.2025.100638","url":null,"abstract":"<div><div>The semiconducting 2D transition metal dichalcogenides (TMDs) have gained substantial attention, though the progress in their lateral heterostructures (HS) and in-situ growth for electronic and optoelectronic applications has been very limited. Herein, we report a single-step in-situ chemical vapor deposition growth of bilayer WS₂-MoS₂ lateral HS, which ensures a clean diffused interface between WS₂ and MoS_2, enabling efficient charge transport. The spatial Raman, photoluminescent (PL), and Auger mapping of in-situ WS₂-MoS₂ lateral HS shows a clear transition from pure WS₂ to pure MoS₂ region through a graded WS_(1-x)Mo_xS₂ alloy interface. The composition and the width of the alloy interface could be tuned by careful choice of the proportion of precursor materials and by tuning the growth parameters. Spatially resolved PL spectra and PL mapping reveal a strongly enhanced (more than one order of magnitude) PL intensity in the HS interface attributed to the strain-induced bandstructure modification in the alloyed interface. Interestingly, the alloyed interface in the lateral HS also dramatically improves the electronic properties, resulting in an on-off ratio of 10⁸ in the fabricated field effect transistor, which is two orders of magnitude higher than their individual counterpart. These results on lateral HS are significant, and they pave the way to synthesize other different HSs for future electronic devices and integrated circuits.</div></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"31 ","pages":"Article 100638"},"PeriodicalIF":8.2,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144170448","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}

{"title":"Microstructure evolution and stability of directionally solidified superalloys with varying γ′ phase forming elements","authors":"Yunpeng Fan ,&nbsp;Xinbao Zhao ,&nbsp;Lijie Qiao ,&nbsp;Yang Song ,&nbsp;Yu Zhou ,&nbsp;Yuan Cheng ,&nbsp;Shuli Zeng ,&nbsp;Quanzhao Yue ,&nbsp;Wanshun Xia ,&nbsp;Yuefeng Gu ,&nbsp;Ze Zhang","doi":"10.1016/j.mtnano.2025.100637","DOIUrl":"10.1016/j.mtnano.2025.100637","url":null,"abstract":"<div><div>The microstructure evolution and stability of the directionally solidified superalloys with various contents of γ′ phase forming elements were investigated. The increase of mass fraction of γ′ phase forming elements from Al: 5 %, Ti: 1 % to Al: 6 %, Ti:2 % dramatically increased the area fraction of eutectic and the inhomogeneity. However, the segregation ratio decreased with the increase of γ′ phase forming elements, owing to the discharge of W and Mo. After heat treatments, the addition of γ′ phase forming elements led to the formation of a four-layer layered structure, and the inhomogeneity could not be eliminated. The increased contents of γ′ phase forming elements were detrimental to the structural stability, promoted the coarsening of the γ′ phase, and increased the mismatch stress between the two phases in the dendrite.</div></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"30 ","pages":"Article 100637"},"PeriodicalIF":8.2,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144106692","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}