Nanoscale Horizons最新文献_第7页

IF 8 2区材料科学

Nanoscale Horizons Pub Date : 2024-10-29 DOI: 10.1039/D4NH00390J

Vigneshwaran Chandrasekaran, Christopher R. DeLaney, Cong Tai Trinh, David Parobek, Christopher A. Lane, Jian-Xin Zhu, Xiangzhi Li, Huan Zhao, Marshall A. Campbell, Laura Martin, Edward F. Wyckoff, Andrew C. Jones, Matthew M. Schneider, John Watt, Michael T. Pettes, Sergei A. Ivanov, Andrei Piryatinski, David H. Dunlap and Han Htoon

{"title":"Correlated excitonic signatures of individual van der Waals NiPS3 antiferromagnet nanoflakes†","authors":"Vigneshwaran Chandrasekaran, Christopher R. DeLaney, Cong Tai Trinh, David Parobek, Christopher A. Lane, Jian-Xin Zhu, Xiangzhi Li, Huan Zhao, Marshall A. Campbell, Laura Martin, Edward F. Wyckoff, Andrew C. Jones, Matthew M. Schneider, John Watt, Michael T. Pettes, Sergei A. Ivanov, Andrei Piryatinski, David H. Dunlap and Han Htoon","doi":"10.1039/D4NH00390J","DOIUrl":"10.1039/D4NH00390J","url":null,"abstract":"Composite quasi-particles with emergent functionalities in spintronic and quantum information science can be realized in correlated materials due to entangled charge, spin, orbital, and lattice degrees of freedom. Here we show that by reducing the lateral dimension of correlated antiferromagnet NiPS3 flakes to tens of nanometers and thickness to less than ten nanometers, we can switch-off the bulk spin–orbit entangled exciton in the near-infrared (1.47 eV) and activate visible-range (1.8–2.2 eV) transitions. These ultra-sharp lines (<120 μeV at 4.2 K) share the spin-correlated nature of the bulk exciton by displaying a strong linear polarization below Néel temperature. Furthermore, exciton photoluminescence lineshape analysis indicates a polaronic character VIA coupling with at-least 3 phonon modes and a comb-like Stark effect through discretization of charges in each layer. These findings augment the knowledge on the many-body nature of excitonic quasi-particles in correlated antiferromagnets and also establish the nanoscale correlated antiferromagnets as a promising platform for integrated magneto-optic devices.","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 1","pages":" 150-157"},"PeriodicalIF":8.0,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/nh/d4nh00390j?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142566503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

The well-defined three-dimensional matrix of a micro-sized silicon/carbon composite promoting lithium-ion transportation† 微型硅碳复合材料的三维矩阵定义明确，可促进锂离子运输。

IF 8 2区材料科学

Nanoscale Horizons Pub Date : 2024-10-29 DOI: 10.1039/D4NH00349G

Denghui Wang, Minghao Ma, Wenqiang Xu, Yingjie Ma, Lidong Li and Xianglong Li

{"title":"The well-defined three-dimensional matrix of a micro-sized silicon/carbon composite promoting lithium-ion transportation†","authors":"Denghui Wang, Minghao Ma, Wenqiang Xu, Yingjie Ma, Lidong Li and Xianglong Li","doi":"10.1039/D4NH00349G","DOIUrl":"10.1039/D4NH00349G","url":null,"abstract":"Micro-sized silicon is a promising anode material due to its high theoretical capacity and low cost. However, its bulk particle size poses a challenge during electrochemical cycling, and the long ion/electron transport paths within it limit the rate capability. Herein, we propose a structural engineering approach for establishing a well-defined three-dimensional (3D) micro-sized silicon/carbon matrix to achieve efficient omnidirectional ionic and electronic conductivity within micro-sized silicon and effectively mitigate the volume changes. The prepared materials, comprising ordered two-dimensional porous silicon nanosheets, offer direct two-dimensional electrolyte transport channels aligned parallel to the layer plane and porous channels oriented perpendicular to the layer plane. These well-defined omnidirectional pathways enable more efficient electrolyte mass transport than the disordered paths within the traditional 3D porous silicon anodes. A robust carbon shell, securely bonded to silicon through dual covalent bonding, effectively shields these pathways, buffering the volume changes and offering an electronically conductive 3D carbon network.","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 1","pages":" 172-178"},"PeriodicalIF":8.0,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142612948","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}

引用次数: 0

Polymer-confined synthesis of gram-scale high-entropy perovskite fluoride nanocubes for improved electrocatalytic reduction of nitrate to ammonia† 聚合物封闭合成克级高熵过氧化物氟化物纳米立方体，用于改进硝酸盐到氨的电催化还原。

IF 8 2区材料科学

Nanoscale Horizons Pub Date : 2024-10-25 DOI: 10.1039/D4NH00341A

Guohao Xue, Tianlu Wang, Hele Guo, Nan Zhang, Claire J. Carmalt, Johan Hofkens, Feili Lai and Tianxi Liu

{"title":"Polymer-confined synthesis of gram-scale high-entropy perovskite fluoride nanocubes for improved electrocatalytic reduction of nitrate to ammonia†","authors":"Guohao Xue, Tianlu Wang, Hele Guo, Nan Zhang, Claire J. Carmalt, Johan Hofkens, Feili Lai and Tianxi Liu","doi":"10.1039/D4NH00341A","DOIUrl":"10.1039/D4NH00341A","url":null,"abstract":"High-entropy perovskite fluoride (HEPF) has gradually attracted attention in the field of electrocatalysis due to its unique properties. Although traditional co-precipitation methods can efficiently produce HEPF, the resulting catalysts often lack regular morphology and tend to aggregate extensively. Here, nanocubic K(CuMgCoZnNi)F3 HEPF (HEPF-2) was successfully prepared on a gram-scale by a polyvinylpyrrolidone (PVP)-confined nucleation strategy. Benefiting from its large electrochemically active surface area and well-exposed active sites, the HEPF-2 demonstrates dramatically enhanced electrocatalytic activity in electrocatalytic nitrate reduction to ammonia, leading to an improved ammonia yield rate (7.031 mg h−1 mgcat.−1), a high faradaic efficiency (92.8%), and excellent long-term stability, outperforming the irregular HEPF nanoparticles (HEPF-0) prepared without the assistance of PVP. Our work presents an efficient and facile method to synthesize perovskite fluorides with a well-defined structure, showing great promise in the field of high-performance electrocatalysis.","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 1","pages":" 135-141"},"PeriodicalIF":8.0,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/nh/d4nh00341a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142491268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Understanding the relationship between nanosheet thickness and piezoresistivity in graphene strain sensors† 了解石墨烯应变传感器中纳米片厚度与压阻系数之间的关系。

IF 8 2区材料科学

Nanoscale Horizons Pub Date : 2024-10-23 DOI: 10.1039/D4NH90072C

Sara Domenici

引用次数: 0

Semiconductor nanowire heterodimensional structures toward advanced optoelectronic devices 面向先进光电设备的半导体纳米线异维结构。

IF 8 2区材料科学

Nanoscale Horizons Pub Date : 2024-10-22 DOI: 10.1039/D4NH00385C

Xin Yan, Yao Li and Xia Zhang

引用次数: 0

Electric field-assisted resonance frequency tuning in free standing nanomechanical devices for application in multistate switching using a phase change material† 利用相变材料在多态开关中应用独立纳米机械装置的电场辅助共振频率调谐。

IF 8 2区材料科学

Nanoscale Horizons Pub Date : 2024-10-22 DOI: 10.1039/D4NH00463A

Durgesh Banswar, Jay Krishna Anand, Syed A. Bukhari, Sonika Singh, Rahul Prajesh, Hemant Kumar, S. K. Makineni and Ankur Goswami

{"title":"Electric field-assisted resonance frequency tuning in free standing nanomechanical devices for application in multistate switching using a phase change material†","authors":"Durgesh Banswar, Jay Krishna Anand, Syed A. Bukhari, Sonika Singh, Rahul Prajesh, Hemant Kumar, S. K. Makineni and Ankur Goswami","doi":"10.1039/D4NH00463A","DOIUrl":"10.1039/D4NH00463A","url":null,"abstract":"VO2 possesses a unique property of solid-state phase transition near room temperature wherein it transforms from monoclinic (M1) to tetragonal phase (R) that alters its physical properties, such as resistivity, mechanical modulus, and lattice strain, at an ultrafast time scale known as MIT. Such a phenomenon offers a distinct advantage to use VO2 in switching applications using heat flux as a stimulus. However, such alteration in properties can also be triggered under an electric field (E), which is known as E-MIT. A nanomechanical resonator coated with VO2 recently received traction where the resonance behavior can be modulated by taking advantage of its phase transition. Herein, we demonstrate that by fabricating a microstring of 400 μm (L) × 5 μm (W) × 240 nm (t) of suspended SiNx coated with VO2, the frequency (fr) of the resonator can be modulated by applying an electric field. We show that at room temperature, the fr of the microstring can be either reduced (by 0.5% at 15 V mm−1) or enhanced (by 2.2% at 25 V mm−1) or can be varied in a cycle under E-field. Using theoretical models, we establish the simulated results and explain the processes behind it, which demonstrate excellent mechanical tuning properties of the VO2-based microstring resonator, making it an attractive and alternative option for highly efficient MEMS-based switches and neuromorphic devices.","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 3","pages":" 549-560"},"PeriodicalIF":8.0,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142581258","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}

引用次数: 0

Lasing in an assembled array of silver nanocubes† 银纳米立方体组装阵列中的激光。

IF 8 2区材料科学

Nanoscale Horizons Pub Date : 2024-10-22 DOI: 10.1039/D4NH00263F

Mindaugas Juodėnas, Nadzeya Khinevich, Gvidas Klyvis, Joel Henzie, Tomas Tamulevičius and Sigitas Tamulevičius

{"title":"Lasing in an assembled array of silver nanocubes†","authors":"Mindaugas Juodėnas, Nadzeya Khinevich, Gvidas Klyvis, Joel Henzie, Tomas Tamulevičius and Sigitas Tamulevičius","doi":"10.1039/D4NH00263F","DOIUrl":"10.1039/D4NH00263F","url":null,"abstract":"We demonstrate a surface lattice resonance (SLR)-based plasmonic nanolaser that leverages bulk production of colloidal nanoparticles and assembly on templates with single particle resolution. SLRs emerge from the hybridization of the plasmonic and photonic modes when nanoparticles are arranged into periodic arrays and this can provide feedback for stimulated emission. It has been shown that perfect arrays are not a strict prerequisite for producing lasing. Here, we propose using high-quality colloids instead. Silver colloidal nanocubes feature excellent plasmonic properties due to their single-crystal nature and low facet roughness. We use capillarity-assisted nanoparticle assembly to produce substrates featuring SLR and comprising single nanocubes. Combined with the laser dye pyrromethene-597, the nanocube array lases at 574 nm with <1.2 nm linewidth, <100 μJ cm−2 lasing threshold, and produces a beam with <1 mrad divergence, despite less-than-perfect arrangement. Such plasmonic nanolasers can be produced on a large-scale and integrated in point-of-care diagnostics, photonic integrated circuits, and optical communications applications.","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 1","pages":" 142-149"},"PeriodicalIF":8.0,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/nh/d4nh00263f?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142520380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Nanoscale Horizons Emerging Investigator Series: Dr Pengzhan Sun, University of Macau, China Nanoscale Horizons Emerging Investigator Series：孙鹏展博士，中国澳门大学。

IF 8 2区材料科学

Nanoscale Horizons Pub Date : 2024-10-15 DOI: 10.1039/D4NH90070G

引用次数: 0

Nanoscale Horizons Emerging Investigator Series: Dr Valentina Castagnola, Italian Institute of Technology, Italy 纳米地平线新兴研究者系列：意大利理工学院的 Valentina Castagnola 博士。

IF 8 2区材料科学

Nanoscale Horizons Pub Date : 2024-10-14 DOI: 10.1039/D4NH90071E

引用次数: 0

A Blautia producta specific gFET-based aptasensor for quantitative monitoring of microbiome quality 基于 gFET 的 Blautia producta 特异性光电传感器，用于定量监测微生物群质量。

IF 8 2区材料科学

Nanoscale Horizons Pub Date : 2024-10-12 DOI: 10.1039/D4NH00281D

Hu Xing, Yiting Zhang, Runliu Li, Hans-Maximilian Ruzicka, Christopher Hain, Jakob Andersson, Anil Bozdogan, Marius Henkel, Uwe Knippschild, Roger Hasler, Christoph Kleber, Wolfgang Knoll, Ann-Kathrin Kissmann and Frank Rosenau

{"title":"A Blautia producta specific gFET-based aptasensor for quantitative monitoring of microbiome quality","authors":"Hu Xing, Yiting Zhang, Runliu Li, Hans-Maximilian Ruzicka, Christopher Hain, Jakob Andersson, Anil Bozdogan, Marius Henkel, Uwe Knippschild, Roger Hasler, Christoph Kleber, Wolfgang Knoll, Ann-Kathrin Kissmann and Frank Rosenau","doi":"10.1039/D4NH00281D","DOIUrl":"10.1039/D4NH00281D","url":null,"abstract":"The use of health-relevant bacteria originating from human microbiomes for the control or therapy of diseases, including neurodegenerative disorders or diabetes, is currently gaining increasing importance in medicine. Directed and successful engineering of microbiomes via probiotic supplementation requires subtle, precise as well as, more importantly, easy, fast and convenient monitoring of its success, e.g., in patients’ gut. Based on a previously described polyclonal SELEX aptamer library evolved against the human gut bacterium Blautia producta, we finally isolated three individual aptamers that proved their performance concerning affinity, specificity and robustness in reliably labeling the target bacterium and in combination with “contaminating” control bacteria. Using biofunctionalization molecules on gFETs, we could specifically quantify 101–106 cells per mL, retrace their number in mixtures and determine aptamer Kd-values around 2 nM. These measurements were possible even in the context of a real human stool sample. Our results qualify gFETs in combination with BL2, BL7 and BL8 aptamers as a promising foundation for the construction of respective sensing devices, which will open new avenues towards developing an intended monitoring technique for probiotic therapy and microbiome engineering approaches.","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 1","pages":" 124-134"},"PeriodicalIF":8.0,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/nh/d4nh00281d?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142453664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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