Nano Letters最新文献_第3页

Engineering High-Entropy Tetrahedrite Cu–Zn–Sb–Ag–Bi–S Nanocrystals via Sequential Cation Exchange as Efficient Catalysts for Hydrogen Evolution Reactions 高熵四面体Cu-Zn-Sb-Ag-Bi-S纳米晶序序阳离子交换作为析氢反应的高效催化剂

IF 10.8 1区材料科学

Nano Letters Pub Date : 2026-10-19 DOI: 10.1021/acs.nanolett.6c03077

Ankita Bora,Suvodeep Sen,Niraj Nitish Patil,Temilade Esther Edgoke,Kevin M. Ryan,Shalini Singh

{"title":"Engineering High-Entropy Tetrahedrite Cu–Zn–Sb–Ag–Bi–S Nanocrystals via Sequential Cation Exchange as Efficient Catalysts for Hydrogen Evolution Reactions","authors":"Ankita Bora,Suvodeep Sen,Niraj Nitish Patil,Temilade Esther Edgoke,Kevin M. Ryan,Shalini Singh","doi":"10.1021/acs.nanolett.6c03077","DOIUrl":"https://doi.org/10.1021/acs.nanolett.6c03077","url":null,"abstract":"High-entropy chalcogenides represent an emerging class of functional materials with immense potential in broad applications. To date, colloidal high-entropy nanocrystals (NCs) have predominantly been accessed via co-nucleation of precursors or simultaneous incorporation of multiple cations. While effective, these approaches lack a mechanistic understanding of NC synthesis. Here, we report the colloidal synthesis of high-entropy Cu–Zn–Sb–Ag–Bi–S NCs in the tetrahedrite phase, employing a sequential, low-temperature cation-exchange strategy, starting from a Cu–Zn–Sb–S tetrahedrite template. Subsequent sequential cation exchanges preserve the crystal phase while enabling precise control over morphology. This bottom-up approach circumvents the need for high-temperature synthesis, while allowing isolation and characterization of intermediate states, providing important mechanistic insight into the evolution of high-entropy NCs. The nanocrystals served as hydrogen evolution reaction electrocatalysts with less negative cathodic potentials. This work introduces the high-entropy tetrahedrite phase, paving the way for entropy-stabilized chalcogenides for energy conversion applications.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"73 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2026-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149218948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Physics-Consistent Generative Hologram Design for Multifocal Femtosecond Laser Fabrication 多焦飞秒激光制造的物理一致性生成全息图设计

IF 10.8 1区材料科学

Nano Letters Pub Date : 2026-10-19 DOI: 10.1021/acs.nanolett.6c03779

Bowen Chen,Hao Wu,Xiaoxu Rao,Wenji Yang,Zeye Li,Jincheng Ni,Jiawen Li,Dong Wu,Yanlei Hu,Chaowei Wang

{"title":"Physics-Consistent Generative Hologram Design for Multifocal Femtosecond Laser Fabrication","authors":"Bowen Chen,Hao Wu,Xiaoxu Rao,Wenji Yang,Zeye Li,Jincheng Ni,Jiawen Li,Dong Wu,Yanlei Hu,Chaowei Wang","doi":"10.1021/acs.nanolett.6c03779","DOIUrl":"https://doi.org/10.1021/acs.nanolett.6c03779","url":null,"abstract":"Multifocal phase holography offers a route to parallel femtosecond laser micro- and nanofabrication, but conventional weighted Gerchberg–Saxton (GSW) phase retrieval requires target-specific iterations and does not jointly optimize the optical quantities governing exposure quality. Here we introduce PhyFlow, a physics-consistent invertible flow model that generates phase-only multifocal holograms from target multifocal patterns in a single inverse pass. A multiscale invertible backbone learns target-to-phase correspondence, while differentiable Fourier optics constraints optimize diffraction efficiency, focal uniformity, and target-shape preservation. Across focal numbers and array scales, PhyFlow matches or surpasses GSW in energy concentration, focal balance, and shape fidelity while reducing per-hologram generation time by 98.8%. Optical-field measurements and femtosecond laser writing further show improved dot-area consistency, narrower line width distributions, and fewer nontarget written features. PhyFlow therefore connects rapid learned hologram generation with physically optimized fields and more uniform parallel fabrication.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"414 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2026-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149218888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Squaring the Hexagon: Multiply Twinned Plasmonic Magnesium Nanocubes 六边形的平方：倍增双等离子体镁纳米立方体

IF 10.8 1区材料科学

Nano Letters Pub Date : 2026-10-19 DOI: 10.1021/acs.nanolett.6c04201

Christina Boukouvala,Andrey Ten,Vladimir Lomonosov,Emilie Ringe

{"title":"Squaring the Hexagon: Multiply Twinned Plasmonic Magnesium Nanocubes","authors":"Christina Boukouvala,Andrey Ten,Vladimir Lomonosov,Emilie Ringe","doi":"10.1021/acs.nanolett.6c04201","DOIUrl":"https://doi.org/10.1021/acs.nanolett.6c04201","url":null,"abstract":"Magnesium, a promising alternative for sustainable nanophotonics, crystallizes in a hexagonal close-packed (HCP) system, unlike the face-centered cubic (FCC) structures of gold, silver, copper, and aluminum. We report the high-yield colloidal synthesis of an unexpected shape in an HCP system: cubes. Nanocubes with narrow size distributions were produced from colloidal reduction of a magnesium precursor in the presence of a sodium salt nucleating agent. Electron microscopy and diffraction reveal multiple twinning leading to the formation of six single-crystal units within the nanocubes. A self-limiting, sub-10 nm passivating oxide layer protects the metallic core against further oxidation in air and organic solvents. Strong, multimode plasmonic responses were observed using bulk extinction spectroscopy, single-particle scattering correlated with electron microscopy, and electron energy loss spectroscopy; experimental results were corroborated by numerical simulations. These findings expand the crystallographic boundaries of non-FCC plasmonics and establish magnesium nanocubes as versatile building blocks for nanophotonic applications.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"10 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2026-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149218891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Ultralow-ThresholdNIR AgAuSe Colloidal Quantum DotLaser 超低阈值红外AgAuSe胶体量子点激光器

IF 10.8 1区材料科学

Nano Letters Pub Date : 2026-10-17 DOI: 10.1021/acs.nanolett.6c04105

Ziyan Zhang,Yuhua Chen,Hongchao Yang,Yejun Zhang,Jiang Jiang,Yuliang Zhao,Xingwang Zhang,Qiangbin Wang

引用次数: 0

Plasmonic Couplingwithin Atomically Precise NanoclusterDimers for Engineering Hot-Carrier Generation and Molecular Activation 用于工程热载流子生成和分子活化的原子精密纳米簇二聚体中的等离子体耦合

IF 10.8 1区材料科学

Nano Letters Pub Date : 2026-10-17 DOI: 10.1021/acs.nanolett.6c03672

Khushboo Bhardwaj,Samir Kumar Nayak,Pramod K. Verma,Sharma S. R. K. C. Yamijala

{"title":"Plasmonic Coupling\u0000within Atomically Precise Nanocluster\u0000Dimers for Engineering Hot-Carrier Generation and Molecular Activation","authors":"Khushboo Bhardwaj,Samir Kumar Nayak,Pramod K. Verma,Sharma S. R. K. C. Yamijala","doi":"10.1021/acs.nanolett.6c03672","DOIUrl":"https://doi.org/10.1021/acs.nanolett.6c03672","url":null,"abstract":"Abstract Activating the exceptionally strong N≡N bond remains a fundamental challenge due to the chemical inertness of molecular nitrogen (N2). Plasmonic nanoclusters offer a promising approach by generating localized electromagnetic fields and energetic hot carriers that can drive bond activation under ambient conditions. Here, we combine real-time time-dependent density functional theory with Ehrenfest molecular dynamics to reveal how plasmonic coupling between tetrahedral Ag20 nanoclusters governs N2 activation and dissociation. Systematic variation of the intercluster separation shows that a 6 Å nanogap maximizes near-field enhancement and hot-electron transfer to the adsorbed N2, accompanied by N–N activation. Consequently, N2 dissociation is achieved at incident field strengths as low as 0.5 V Å–1, whereas larger-gap dimers exhibit substantially lower activity. Similarly, isolated N2 remains intact under comparable conditions. These findings establish nanogap engineering as an effective strategy for optimizing plasmon-driven N2 activation and provide design principles for developing efficient plasmonic catalysts.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"52 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149210017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Polarization-Dependent Topological Phase Reconstructionvia Multipolarization-Controlled Dzyaloshinskii–Moriya Interaction 基于多极化控制的Dzyaloshinskii-Moriya相互作用的极化相关拓扑相位重建

IF 10.8 1区材料科学

Nano Letters Pub Date : 2026-10-16 DOI: 10.1021/acs.nanolett.6c04207

Haoming Su,Xiong-Xiong Xue,Yee Sin Ang,Ke-Qiu Chen,Li-Ming Tang

引用次数: 0

Toward Two-DimensionalMoS2 Electrets withModulated Fluorescence 具有调制荧光的二维mos2驻极体

IF 10.8 1区材料科学

Nano Letters Pub Date : 2026-10-16 DOI: 10.1021/acs.nanolett.6c03760

Eugenio Lunedei,Andrea Liscio,Francesco Borgatti,Edoardo Chini,Pasquale D’Angelo,Fiorenza Esposito,Niccolò Borghi,Matteo Mannini,Denis Gentili,Luca Seravalli,Massimiliano Cavallini

{"title":"Toward Two-Dimensional\u0000MoS2 Electrets with\u0000Modulated Fluorescence","authors":"Eugenio Lunedei,Andrea Liscio,Francesco Borgatti,Edoardo Chini,Pasquale D’Angelo,Fiorenza Esposito,Niccolò Borghi,Matteo Mannini,Denis Gentili,Luca Seravalli,Massimiliano Cavallini","doi":"10.1021/acs.nanolett.6c03760","DOIUrl":"https://doi.org/10.1021/acs.nanolett.6c03760","url":null,"abstract":"Abstract We show how spatially controlled sulfur vacancy engineering enables monolayer MoS2 to act as an electret, storing quasi-permanent electrostatic charge within a single atomic layer and modulating its emission properties. Sulfur vacancies are created by stamp-assisted, electrode-free electrochemical nanolithography, yielding tunable defect densities from 1010 to 1013 cm–2. The vacancy domains act as electron traps, resulting in surface charge density up to 1 μC cm–2, with charge retention exceeding 300 days under ambient conditions. Kelvin probe and electric force microscopies reveal electrostatic patterns replicating the lithographic motif. These domains also define a colocalized exciton-quenching regions in fluorescence microimages. They modulate the exciton fluorescence lifetime recorded at room temperature from tens of nanoseconds to a few hundred picoseconds by enhanced nonradiative exciton deactivation and induce a different balancing between excitons and trion emission via free electron draining from the untreated zones of the crystal.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"13 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149210019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Third-HarmonicGeneration in Crumpled Silicon Nanomembranes 卷曲硅纳米膜中的第三代谐波

IF 10.8 1区材料科学

Nano Letters Pub Date : 2026-10-16 DOI: 10.1021/acs.nanolett.6c04060

Gwanjin Lee,Ajit K. Katiyar,Jong-Hyun Ahn,Hyunmin Kim,JaeDong Lee

{"title":"Third-Harmonic\u0000Generation in Crumpled Silicon Nanomembranes","authors":"Gwanjin Lee,Ajit K. Katiyar,Jong-Hyun Ahn,Hyunmin Kim,JaeDong Lee","doi":"10.1021/acs.nanolett.6c04060","DOIUrl":"https://doi.org/10.1021/acs.nanolett.6c04060","url":null,"abstract":"Abstract Silicon nanomembranes provide mechanically compliant devices for strain engineering. Here, we investigate third-harmonic generation in flat and crumpled silicon nanomembranes of 15 and 35 nm using polarization-resolved third-harmonic generation microscopy with ab initio calculations. In flat silicon nanomembranes, the measured polarization dependence is reproduced by the calculated third-order susceptibility, identifying the intrinsic nonlinear response of silicon. In crumpled silicon nanomembranes, local strain variations between valleys and apexes generate distinct polarization-dependent responses. Uniaxial strain along the [110] direction breaks electronic structure symmetry and induces anisotropy between X- and Y-polarized components, while the real and imaginary parts of the third-order susceptibility exhibit quadratic strain dependence. Morphology-induced redistribution of the local optical field further modifies the response in crumpled geometry, and a finite-difference time-domain-based local-field correction substantially improves agreement with the experiment. Therefore, the third-harmonic response of crumpled silicon nanomembranes is controlled by both strain-induced electronic structure modification and morphology-induced local optical-field redistribution.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"1 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149210020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Wrinkled PdMetallene: Synergistic Geometric and ElectronicEngineering for High-Performance Bioorthogonal Catalysis 皱褶pdmetoene：高性能生物正交催化的协同几何和电子工程

IF 10.8 1区材料科学

Nano Letters Pub Date : 2026-10-16 DOI: 10.1021/acs.nanolett.6c03180

Yiming Ma,Yanjie Zhang,Yanjun Ji,Huan Wang,Anjun Song,Ying Wang,Fang Pu,Jinsong Ren,Xiaogang Qu

{"title":"Wrinkled Pd\u0000Metallene: Synergistic Geometric and Electronic\u0000Engineering for High-Performance Bioorthogonal Catalysis","authors":"Yiming Ma,Yanjie Zhang,Yanjun Ji,Huan Wang,Anjun Song,Ying Wang,Fang Pu,Jinsong Ren,Xiaogang Qu","doi":"10.1021/acs.nanolett.6c03180","DOIUrl":"https://doi.org/10.1021/acs.nanolett.6c03180","url":null,"abstract":"Abstract Palladium-mediated bioorthogonal catalysis enables in situ activation of therapeutic and diagnostic agents within living systems, yet developing high-efficacy catalysts remains challenging. Herein, we report a wrinkled Pd metallene catalyst (Pd ML) in which nanoscale wrinkling generates abundant active sites and induces lattice strain, thereby optimizing the electronic and geometric configurations of the catalytic centers for high-performance bioorthogonal catalysis. The Pd MLs exhibit substantially enhanced catalytic activity compared to Pd nanoparticles and their wrinkle-free counterpart, flat Pd metallene. Theoretical calculations reveal that the wrinkle-induced lattice strain shifts the d-band center of Pd downward, thereby facilitating the bioorthogonal reaction. Following functionalization with the AS1411 aptamer, the Pd MLs enable targeted activation of an antitumor prodrug and realize efficient tumor suppression both in vitro and in vivo. This work represents the first example of enhancing bioorthogonal catalysis via synergistic geometric and electronic engineering, establishing a rational paradigm for the development of high-performance bioorthogonal catalysts.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"11 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149210482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

BioinspiredSelf-Powered Polarization-Adaptive VisualSensors Enabled by PbS Quantum-Dots/Oriented ReSe2 Heterojunctions 由PbS量子点/定向ReSe2异质结实现的生物启发自供电偏振自适应视觉传感器

IF 10.8 1区材料科学

Nano Letters Pub Date : 2026-10-15 DOI: 10.1021/acs.nanolett.6c04436

Yongxing Zhu,Haifeng Hu,Ye Tao,Peipei Chen,Jingyao Bian,Ya Lin,Xiaoning Zhao,Zhongqiang Wang,Weiguo Chu,Haiyang Xu,Yichun Liu

{"title":"Bioinspired\u0000Self-Powered Polarization-Adaptive Visual\u0000Sensors Enabled by PbS Quantum-Dots/Oriented ReSe2 Heterojunctions","authors":"Yongxing Zhu,Haifeng Hu,Ye Tao,Peipei Chen,Jingyao Bian,Ya Lin,Xiaoning Zhao,Zhongqiang Wang,Weiguo Chu,Haiyang Xu,Yichun Liu","doi":"10.1021/acs.nanolett.6c04436","DOIUrl":"https://doi.org/10.1021/acs.nanolett.6c04436","url":null,"abstract":"Abstract Polarization-sensitive visual adaptation, the biological capability to autonomously adjust to dynamic polarized light stimuli, is a highly desirable feature for next-generation intelligent vision systems. Integrating polarized light detection and adaptive processing into a single hardware device effectively overcomes the traditional bottlenecks of artificial vision, namely, the reliance on bulky optical components and the latency caused by separated sensing and computing. Here, we report a bioinspired, self-powered, polarization-adaptive visual system based on a PbS quantum-dots (QDs)/oriented ReSe2 heterojunction. Interfacial charge trapping enables adaptive behavior, while oriented etching enhances polarization-dependent photocurrent anisotropy. Under 980 nm illumination in self-powered mode, the device achieves a photocurrent anisotropy ratio of ∼8. It further demonstrates autonomous polarization adjustment, broadband spectral responsivity, and polarization-synergistic functionalities. This work establishes a compact hardware platform for multidimensional perception and adaptive processing in intelligent vision systems.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"52 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2026-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149210084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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