Beilstein Journal of Nanotechnology最新文献_第2页

Interconnection morphology effects on the radio frequency response of carbon nanotube sponges. 互连形态对碳纳米管海绵射频响应的影响。

IF 2.7 4区材料科学

Beilstein Journal of Nanotechnology Pub Date : 2026-02-17 eCollection Date: 2026-01-01 DOI: 10.3762/bjnano.17.23

Manuela Scarselli, Javad Rezvani, Zeno Zuccari, Mattia Scagliotti, Simone Tocci

{"title":"Interconnection morphology effects on the radio frequency response of carbon nanotube sponges.","authors":"Manuela Scarselli, Javad Rezvani, Zeno Zuccari, Mattia Scagliotti, Simone Tocci","doi":"10.3762/bjnano.17.23","DOIUrl":"https://doi.org/10.3762/bjnano.17.23","url":null,"abstract":"In this work, the high-frequency response of a multiwalled carbon nanotube (MWCNT) film grown on a silicon substrate is compared with that of MWCNT sponges (CNSs). Different from the CNT film, CNSs are a self-standing material that can operate in the absence of a supporting substrate, showing high flexibility, light weight, and mechanical robustness. We tested our synthesized CNSs as active material for the production of antennas working in the radio frequency (RF) range to determine whether CNT sponges present, in addition to practical advantages over CNT films, also an actual performance gain. The antenna built from CNSs shows an enhanced response gain compared with that of the MWCNT film, with both antennas having a maximum positioned around 4.8 GHz. After identifying the best CNT-based sample, the experiment focused on improving the CNS antenna's response. In particular, we observed that the response of S 11 = -22.6 dB around 4.8 GHz from the CNS antenna improved after a mild treatment with ethanol, reaching S11 = -32.6 dB measured after 10 min of waiting. This observed effect is studied in detail with scanning electron microscopy and Raman spectroscopy, which point to significant modifications of the CNS's inner morphology after the treatment. Signal reception tests simulating real-world operation conditions were also carried out at two different distances to evaluate the practical application of the CNS as RF antennas. The ethanol treatment was also applied for these tests, and an increase in the response up to 45% was found for the two studied positions.","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"343-351"},"PeriodicalIF":2.7,"publicationDate":"2026-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12927487/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147281970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Beam shaping techniques for pulsed laser ablation in liquids: Unlocking tunable control of nanoparticle synthesis in liquids. 液体中脉冲激光烧蚀的光束整形技术：解锁液体中纳米颗粒合成的可调控制。

IF 2.7 4区材料科学

Beilstein Journal of Nanotechnology Pub Date : 2026-02-16 eCollection Date: 2026-01-01 DOI: 10.3762/bjnano.17.22

Sergio Molina-Prados, Nadezhda M Bulgakova, Alexander V Bulgakov, Jesus Lancis, Gladys Mínguez Vega, Carlos Doñate-Buendia

{"title":"Beam shaping techniques for pulsed laser ablation in liquids: Unlocking tunable control of nanoparticle synthesis in liquids.","authors":"Sergio Molina-Prados, Nadezhda M Bulgakova, Alexander V Bulgakov, Jesus Lancis, Gladys Mínguez Vega, Carlos Doñate-Buendia","doi":"10.3762/bjnano.17.22","DOIUrl":"https://doi.org/10.3762/bjnano.17.22","url":null,"abstract":"Nanoparticle synthesis via pulsed laser ablation in liquids has gained prominence as a versatile and environmentally friendly approach for producing ligand-free colloids with controlled composition, size, and morphology. While pulsed laser ablation in liquids offers unparalleled advantages in terms of nanoparticle purity and material versatility, enhancing the size control and productivity require modifications of the standard pulsed laser ablation in liquids technique, such as the incorporation of beam shaping techniques. Recent developments in spatial and temporal beam shaping have demonstrated their potential to revolutionise pulsed laser ablation in liquids by enabling more precise energy deposition and modified nanoparticle production dynamics. This review highlights the critical role of beam shaping, encompassing spatial shaping of the beam to influence laser-material interaction and temporal modification to optimise pulse duration and energy delivery. The current advancements in beam shaping techniques, their impact on the nanoparticle characteristics, and their broader implications for scaling pulsed laser ablation in liquids to meet industrial demands are highlighted, offering a comprehensive perspective on the future of this dynamic field.","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"309-342"},"PeriodicalIF":2.7,"publicationDate":"2026-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12927492/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147281922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Calculation of the dynamic stiffness of a cantilever under torsional oscillation. 悬臂梁在扭转振动作用下的动刚度计算。

IF 2.7 4区材料科学

Beilstein Journal of Nanotechnology Pub Date : 2026-02-13 eCollection Date: 2026-01-01 DOI: 10.3762/bjnano.17.21

Keita Nishida, Yuuki Yasui, Yoshiaki Sugimoto

引用次数: 0

Fast vortex dynamics and relaxation times in NbRe-based heterostructures. nbr基异质结构的快速涡动力学和弛豫时间。

IF 2.7 4区材料科学

Beilstein Journal of Nanotechnology Pub Date : 2026-02-12 eCollection Date: 2026-01-01 DOI: 10.3762/bjnano.17.20

Francesco De Chiara, Zahra Makhdoumi Kakhaki, Francesco Avitabile, Francesco Colangelo, Abhishek Kumar, Carmine Attanasio, Carla Cirillo

{"title":"Fast vortex dynamics and relaxation times in NbRe-based heterostructures.","authors":"Francesco De Chiara, Zahra Makhdoumi Kakhaki, Francesco Avitabile, Francesco Colangelo, Abhishek Kumar, Carmine Attanasio, Carla Cirillo","doi":"10.3762/bjnano.17.20","DOIUrl":"https://doi.org/10.3762/bjnano.17.20","url":null,"abstract":"An in-depth analysis of Abrikosov vortex dynamics and flux-flow instabilities was performed in NbRe/Au and NbRe/Py bilayers to compare superconducting/normal metal (S/N) and superconducting/ferromagnetic (S/F) heterostructures based on the same superconducting layer. The heterostructures, fabricated by sputtering, were characterized through electrical transport measurements. The I-V characteristics show that, in the NbRe/Py bilayer, vortices reach higher critical velocities than those observed in the NbRe/Au structure. The analysis of the flux-flow instability within the Larkin-Ovchinnikov framework allows one to extract the quasiparticle energy relaxation time. For external magnetic field values for which edge barrier pinning is dominant and thermal effects are negligible, the relaxation times are about 150 ps and 24 ps for NbRe/Au and NbRe/Py bilayers, respectively. These results indicate that NbRe/Py bilayers, having a relaxation time one order of magnitude smaller than values reported in NbRe microbridges, have great potential for the realization of devices where fast relaxation processes are required.","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"292-302"},"PeriodicalIF":2.7,"publicationDate":"2026-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12908328/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146211941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advancing nanolithography: a comprehensive review of materials for local anodic oxidation with AFM. 纳米光刻技术的发展：AFM局部阳极氧化材料的综合综述。

IF 2.7 4区材料科学

Beilstein Journal of Nanotechnology Pub Date : 2026-02-09 eCollection Date: 2026-01-01 DOI: 10.3762/bjnano.17.19

Matteo Lorenzoni

{"title":"Advancing nanolithography: a comprehensive review of materials for local anodic oxidation with AFM.","authors":"Matteo Lorenzoni","doi":"10.3762/bjnano.17.19","DOIUrl":"https://doi.org/10.3762/bjnano.17.19","url":null,"abstract":"Local anodic oxidation (LAO), also known as local oxidation nanolithography or oxidation scanning probe lithography has emerged as a versatile technique for nanoscale patterning, leveraging the precision of scanning probe microscopy, relying specifically on atomic force microscopy. This review explores the materials utilized in LAO experiments, including semiconductors, metals, insulators, two-dimensional (2D) materials, and emerging heterostructures. Semiconductors such as silicon and silicon carbide remain foundational due to their controllable oxidation kinetics, while metals like titanium and aluminum offer opportunities for plasmonic and optical applications. 2D materials, including graphene, graphene oxide, and transition metal dichalcogenides, demonstrate unique oxidation behaviors, enabling high-resolution applications in electronics and quantum devices. Recent advancements, such as electrode-free LAO, have expanded the range of applicable materials and improved the precision and scalability of the process. This paper also aims to provide a comprehensive understanding of material selection in LAO and its implications for advancing nanotechnology.","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"275-291"},"PeriodicalIF":2.7,"publicationDate":"2026-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12908326/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146211986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Durable antimicrobial activity of fabrics functionalized with zeolite ion-exchanged nanomaterials against Staphylococcus aureus and Escherichia coli. 沸石离子交换纳米材料功能化织物抗金黄色葡萄球菌和大肠杆菌的持久抗菌活性。

IF 2.7 4区材料科学

Beilstein Journal of Nanotechnology Pub Date : 2026-02-06 eCollection Date: 2026-01-01 DOI: 10.3762/bjnano.17.18

Perla Sánchez-López, Kendra Ramirez Acosta, Sergio Fuentes Moyado, Ruben Dario Cadena-Nava, Elena Smolentseva

{"title":"Durable antimicrobial activity of fabrics functionalized with zeolite ion-exchanged nanomaterials against Staphylococcus aureus and Escherichia coli.","authors":"Perla Sánchez-López, Kendra Ramirez Acosta, Sergio Fuentes Moyado, Ruben Dario Cadena-Nava, Elena Smolentseva","doi":"10.3762/bjnano.17.18","DOIUrl":"10.3762/bjnano.17.18","url":null,"abstract":"Nanoparticle-based functionalization has emerged as an effective strategy to enhance the antimicrobial properties of textiles. In this study, silver (Ag+), copper (Cu2+), and zinc (Zn2+) cations are ion-exchanged with Y-type zeolite (CBV-600) and subsequently applied to cotton fabrics using the pad-dry-cure method, with an acrylic resin serving as binder. The resulting functionalized fabrics, containing metal cation concentrations of 1.0-1.5 atom % are evaluated regarding their antimicrobial activity against Staphylococcus aureus (Gram-positive) and Escherichia coli (Gram-negative), as well as regarding their physicochemical and mechanical properties. Scanning electron microscopy confirms the uniform distribution and successful incorporation of nanomaterials onto the fabric surfaces. Antimicrobial tests reveal significant inhibition of bacterial growth, with silver-based materials demonstrating superior efficacy. Importantly, the antimicrobial effect persists after five washing cycles, demonstrating the durability of the functionalization. This method demonstrates a simple and industry-compatible approach for producing durable antimicrobial cotton fabrics.","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"262-274"},"PeriodicalIF":2.7,"publicationDate":"2026-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12884551/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146155901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multilayered hyperbolic Au/TiO₂ nanostructures for enhancing the nonlinear response around the epsilon-near-zero point. 多层双曲型Au/TiO2纳米结构在epsilon-近零附近增强非线性响应。

IF 2.7 4区材料科学

Beilstein Journal of Nanotechnology Pub Date : 2026-02-05 eCollection Date: 2026-01-01 DOI: 10.3762/bjnano.17.17

Fernando Arturo Araiza-Sixtos, Mauricio Gomez-Robles, Rafael Salas-Montiel, Raúl Rangel-Rojo

{"title":"Multilayered hyperbolic Au/TiO2 nanostructures for enhancing the nonlinear response around the epsilon-near-zero point.","authors":"Fernando Arturo Araiza-Sixtos, Mauricio Gomez-Robles, Rafael Salas-Montiel, Raúl Rangel-Rojo","doi":"10.3762/bjnano.17.17","DOIUrl":"10.3762/bjnano.17.17","url":null,"abstract":"In this work, we present the design, fabrication, and study of the optical properties of multilayered metal-dielectric Au/TiO2 structures. The samples were fabricated using Joule effect evaporation for gold and electron beam evaporation for titanium dioxide. Their structure was designed to have an epsilon-near-zero (ENZ) point at different wavelengths around 800 nm, in order to study their nonlinear response as a function of the resonance conditions around the ENZ point. The characterization of the linear properties of the samples was done using spectrophotometry and spectral ellipsometry. We studied the nonlinear response with the z-scan technique at different incident irradiances using a Ti:sapphire femtosecond laser, enabling us to characterize both the refractive and absorptive contributions to the nonlinear response. Due to the high pulse repetition rate inherent to Ti:sapphire systems and the presence of linear absorption in the samples, cumulative pulse-to-pulse thermal effects may be present. A modified version of the z-scan technique that allowed us to separate the electronic from the thermal contribution was used. A clear enhancement of the nonlinear response was observed for the sample with an ENZ point around the laser wavelength 800 nm with a nonlinear refractive index of n 2 = 0.103 ± 0.006 cm2·GW-1, a value that is comparable to other ENZ materials in literature.","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"251-261"},"PeriodicalIF":2.7,"publicationDate":"2026-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12884553/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146155831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparative study on 3D morphologies of delignified, single tracheids and fibers of five wood species. 五种木材去木质素、单管胞和纤维三维形态的比较研究。

IF 2.7 4区材料科学

Beilstein Journal of Nanotechnology Pub Date : 2026-02-04 eCollection Date: 2026-01-01 DOI: 10.3762/bjnano.17.16

Helen Gorges, Felicitas von Usslar, Cordt Zollfrank, Silja Flenner, Imke Greving, Martin Müller, Clemens F Schaber, Chuchu Li, Stanislav N Gorb

{"title":"Comparative study on 3D morphologies of delignified, single tracheids and fibers of five wood species.","authors":"Helen Gorges, Felicitas von Usslar, Cordt Zollfrank, Silja Flenner, Imke Greving, Martin Müller, Clemens F Schaber, Chuchu Li, Stanislav N Gorb","doi":"10.3762/bjnano.17.16","DOIUrl":"10.3762/bjnano.17.16","url":null,"abstract":"Wood tracheids and fibers exhibit diverse structures and shapes across plant species. The hierarchical structure and composition of cellulose, hemicelluloses, and lignin enables wood to withstand high stress. This structural resilience makes wood a versatile material for applications ranging from construction to advanced composites. However, a detailed understanding of how delignification affects softwood tracheid and hardwood fiber morphology is crucial for predicting material behavior and developing modified wood products. This study investigated the overall structural changes due to delignification, in five wood species, namely, spruce, beech, balsa, Douglas fir, and poplar. It additionally provides detailed morphology of delignified single tracheids and fibers. Scanning electron microscopy was used to compare the morphology between untreated and delignified fibers and tracheids. X-ray tomography enabled us to reconstruct high-resolution 3D models of delignified single tracheids or fibers, providing information on the pit arrangements. Moreover, delignification resulted in facilitated separation of fibers and tracheids and frayed wall appearance. We observed similar tracheid/fiber diameters and wall thicknesses for all five wood species. These findings enhance our understanding of the wood fiber and tracheid structures across species and the effects of delignification. The 3D models provide a valuable resource for (1) understanding interspecies differences of fibers and tracheids, (2) optimizing the use of delignified wood in industrial applications (including bio-based and bio-inspired materials), and (3) physical modeling of wood regarding questions of wood biomechanics and water management.","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"239-250"},"PeriodicalIF":2.7,"publicationDate":"2026-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12884549/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146155780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Gold nanoparticle-decorated reduced graphene oxide as a highly effective catalyst for the selective α,β-dehydrogenation of N-alkyl-4-piperidones. 金纳米粒子修饰的还原氧化石墨烯作为n -烷基-4-哌啶酮选择性α，β-脱氢的高效催化剂。

IF 2.7 4区材料科学

Beilstein Journal of Nanotechnology Pub Date : 2026-01-30 eCollection Date: 2026-01-01 DOI: 10.3762/bjnano.17.15

Brenda Flore Kenyim, Mihir Tzalis, Marilyn Kaul, Robert Oestreich, Aysenur Limon, Chancellin Pecheu Nkepdep, Christoph Janiak

{"title":"Gold nanoparticle-decorated reduced graphene oxide as a highly effective catalyst for the selective α,β-dehydrogenation of N-alkyl-4-piperidones.","authors":"Brenda Flore Kenyim, Mihir Tzalis, Marilyn Kaul, Robert Oestreich, Aysenur Limon, Chancellin Pecheu Nkepdep, Christoph Janiak","doi":"10.3762/bjnano.17.15","DOIUrl":"10.3762/bjnano.17.15","url":null,"abstract":"Gold nanoparticles (AuNPs) supported on reduced graphene oxide (AuNPs/rGO) were demonstrated to be a highly reactive catalyst for the selective α,β-oxidative dehydrogenation (ODH) of N-alkyl-4-piperidones, using N-methyl-, N-ethyl- and N-benzyl-4-piperidone. The substrate N-methyl-4-piperidone represents a pharmaceutically relevant system as its reaction product N-methyl-2,3-dihydropyridin-4(1H)-one is highly valuable (>1000 €·g-1) in contrast to the inexpensive starting material (0.15 €·g-1). Various synthesis methods were employed to prepare AuNPs supported on different carbon materials, including reduced graphene oxide (rGO), activated carbon (AC), and carbon black (CB), to investigate the influence of the carbon support on the catalyst performance. As stabilizing agents for the AuNPs, citrate (Cit) and the polyoxometallate [SiW9O34]10- (SiW9) were used. Among the tested catalysts, the rGO-supported ones, Au-Cit/rGO, Au-SiW9/rGO, and Au@SiW9/rGO exhibited the highest catalytic activity for the selective oxidation reaction despite containing the lowest gold loading. These findings highlight the exceptional performance of rGO as a support for AuNP catalysts and provide valuable insights for designing efficient Au-based systems for the dehydrogenation of β-N-substituted saturated ketones and other fine chemical applications.","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"218-238"},"PeriodicalIF":2.7,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12862619/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146111985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Micro- and nanoscale effects in biological and bioinspired materials and surfaces. 生物材料和表面的微纳米效应。

IF 2.7 4区材料科学

Beilstein Journal of Nanotechnology Pub Date : 2026-01-28 eCollection Date: 2026-01-01 DOI: 10.3762/bjnano.17.14

Thies H Büscher, Rhainer Guillermo Ferreira, Manuela Rebora, Stanislav N Gorb

引用次数: 0