Nano Letters最新文献_第8页

In Situ Transmission Electron Microscopy of Plasma-Driven Nanoparticle Synthesis in Solution 等离子体驱动纳米颗粒在溶液中合成的原位透射电镜研究

IF 9.1 1区材料科学

Nano Letters Pub Date : 2026-10-14 Epub Date: 2026-09-29 DOI: 10.1021/acs.nanolett.6c03033

Jae Hyun Nam, Daan Hein Alsem, Peter J. Bruggeman

引用次数: 0

Enhanced Circular Dichroism in 3D Helical-Shaped Chiral Plasmonic Metamaterials Assembled from Colloidal Nanocrystals 由胶体纳米晶体组装的三维螺旋形手性等离子体超材料的圆二色性增强

IF 9.1 1区材料科学

Nano Letters Pub Date : 2026-10-14 Epub Date: 2026-09-29 DOI: 10.1021/acs.nanolett.6c03346

Hsiang-Ting Lin, Christine Huang, Jonah J. Ng, Christopher B. Murray, Cherie R. Kagan

{"title":"Enhanced Circular Dichroism in 3D Helical-Shaped Chiral Plasmonic Metamaterials Assembled from Colloidal Nanocrystals","authors":"Hsiang-Ting Lin, Christine Huang, Jonah J. Ng, Christopher B. Murray, Cherie R. Kagan","doi":"10.1021/acs.nanolett.6c03346","DOIUrl":"https://doi.org/10.1021/acs.nanolett.6c03346","url":null,"abstract":"Circular dichroism (CD) in plasmonic metamaterials canbe strengthenedby engineering three-dimensional (3D) chiral geometry and electromagneticcoupling. We report 3D helical-shaped plasmonic metamaterials assembledfrom colloidal Au nanocrystal/bulk Au bilayer heterostructures. Arraysof planar spiral patterns defined by nanoimprint lithography are transformedinto 3D helical metamaterials through strain-driven, out-of-planefolding induced by ligand exchange and annealing. Compared with multiple-short-arm(4C) references having the same total arm length, single-helical (1H)structures exhibit stronger differential transmittance between left-and right-handed circularly polarized light (ΔT). Adding a second helical arm to form double-helical (2H) structuresfurther increases ΔT to nearly 70% in the mid-infraredrange. Electromagnetic simulations reveal that intra-meta-atom coupling,antenna loading, and mode hybridization reshape the resonances andamplify CD beyond the response of isolated components. This work demonstratesthat 3D helical architectures can significantly strengthen plasmonicCD responses and provides a scalable nanocrystal-based platform fordesigning compact mid-infrared chiroptical devices.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"26 40","pages":"13913–13920"},"PeriodicalIF":9.1,"publicationDate":"2026-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149173940","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

Termination-Controlled Fractional Spin Modes at Organic Topological Spin–Chain Interfaces 有机拓扑自旋链界面末端控制的分数自旋模式

IF 9.1 1区材料科学

Nano Letters Pub Date : 2026-10-14 Epub Date: 2026-10-05 DOI: 10.1021/acs.nanolett.6c02280

Khalid N. Anindya, Hong Guo

{"title":"Termination-Controlled Fractional Spin Modes at Organic Topological Spin–Chain Interfaces","authors":"Khalid N. Anindya, Hong Guo","doi":"10.1021/acs.nanolett.6c02280","DOIUrl":"10.1021/acs.nanolett.6c02280","url":null,"abstract":"Organic radical chains provide anatomically preciseplatform forrealizing interacting quantum spin nanostructures, but controllingthe local fate of fractional boundary degrees of freedom at internalinterfaces remains challenging. Here, we investigate interfaces betweena dimerized spin-1/2 sector and a Hund-coupled effective Haldane spin-1sector within a trioxoazatriangulene-based parent chain. Althoughthe constituent fractional boundary moments are individually established,their many-body response at the heterojunction depends sensitivelyon the bond-level termination registry. In one geometry, adjoiningspin-1/2-like boundary contributions locally compensate and quenchthe interfacial response, whereas a parity-shifted registry leavesan uncompensated localized spin-1/2-like mode. Two such internal modesof a finite embedded Haldane domain hybridize with an approximatelyexponentially decreasing splitting. The active and quenched junctionstherefore exhibit distinct local low-energy spin responses. Theseresults identify termination parity and bond-level interface registryas practical control parameters for activating, locally quenching,and coupling fractional spin modes in organic quantum spin nanostructures.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"26 40","pages":"13746–13752"},"PeriodicalIF":9.1,"publicationDate":"2026-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149088173","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

Proximitized Topological Insulator Charge Island Fabricated via In Situ Multi-Angle Stencil Lithography 用原位多角度模板光刻技术制备近似拓扑绝缘体电荷岛

IF 9.1 1区材料科学

Nano Letters Pub Date : 2026-10-14 Epub Date: 2026-10-05 DOI: 10.1021/acs.nanolett.6c02350

Benedikt Frohn, Tobias Schmitt, Vanessa Serrano, Anne Schmidt, Michael Schleenvoigt, Albert Hertel, Benjamin Bennemann, Abdur Rehman Jalil, Detlev Grützmacher, Peter Schüffelgen

{"title":"Proximitized Topological Insulator Charge Island Fabricated via In Situ Multi-Angle Stencil Lithography","authors":"Benedikt Frohn, Tobias Schmitt, Vanessa Serrano, Anne Schmidt, Michael Schleenvoigt, Albert Hertel, Benjamin Bennemann, Abdur Rehman Jalil, Detlev Grützmacher, Peter Schüffelgen","doi":"10.1021/acs.nanolett.6c02350","DOIUrl":"10.1021/acs.nanolett.6c02350","url":null,"abstract":"Hybrid superconductor–topological insulator (TI)nanostructuresconstitute a promising material platform for exploring proximity-inducedsuperconductivity in systems with topologically protected surfacestates. A key obstacle has been the realization of clean and well-controlledsuperconductor–TI interfaces, as TI surfaces rapidly degradeunder ambient conditions. Here, we introduce a fully in situ, multi-angle stencil lithography technique that enables the fabricationof proximitized charge islands in TIs. The approach combines selectivearea growth of (Bi,Sb)2Te3 nanoribbons withangle-controlled deposition of diffusion barriers, superconductingAl, and ultrathin oxide tunnel barriers, allowing scalable fabricationof hybrid nanostructures without post-growth processing. Low-temperaturetransport measurements reveal robust Coulomb blockade and a pronouncedsuppression of low-energy conductance, which vanishes with a magneticfield, consistent with proximity-induced superconductivity in theisland. These results establish a versatile nanofabrication platformthat enables access to previously unexplored TI-based hybrid quantumdevices and opens new routes for investigating superconductivity intopological nanostructures.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"26 40","pages":"13753–13758"},"PeriodicalIF":9.1,"publicationDate":"2026-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149088175","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

Narrow-Line-Width Electroluminescence in Monolayer WSe2 Enabled by a Sub-5 nm Au/Pt Nanogap 用低于5纳米Au/Pt纳米隙实现单层wse2的窄线宽电致发光

IF 9.1 1区材料科学

Nano Letters Pub Date : 2026-10-14 Epub Date: 2026-10-03 DOI: 10.1021/acs.nanolett.6c03133

Shurong Miao, I. K. M. Reaz Rahman, Aditya Nirmale, Inha Kim, Dorottya Urmossy, Thomas P. Darlington, Harishankar Jayakumar, Seiichiro Izawa, Archana Raja, Daryl C. Chrzan, Yutaka Majima, Ali Javey

{"title":"Narrow-Line-Width Electroluminescence in Monolayer WSe2 Enabled by a Sub-5 nm Au/Pt Nanogap","authors":"Shurong Miao, I. K. M. Reaz Rahman, Aditya Nirmale, Inha Kim, Dorottya Urmossy, Thomas P. Darlington, Harishankar Jayakumar, Seiichiro Izawa, Archana Raja, Daryl C. Chrzan, Yutaka Majima, Ali Javey","doi":"10.1021/acs.nanolett.6c03133","DOIUrl":"10.1021/acs.nanolett.6c03133","url":null,"abstract":"Spectrally isolated,electrically driven emission fromlocalizedstates in two-dimensional semiconductors remains challenging in scalableplanar devices. Here, we report narrow-line-width alternating-currentelectroluminescence (ACEL) from localized states in monolayer WSe2 using a lithographically defined sub-5 nm Au/Pt nanogap onSiO2/Si at 3.5 K. The curved nanogap geometry producesa nonuniform strain landscape and regions of enhanced electric fieldthat may influence the local electronic environment. Under square-wavegate excitation, the device exhibits a spectrally isolated ACEL lineat 1.652 eV with an apparent fitted line width of approximately 2meV, in contrast to broad, multipeak photoluminescence from the samedevice. Spectral decomposition identifies dominant ZPL-like and weakerred-shifted sideband-like contributions. This nanogap architectureprovides a scalable planar platform for narrow-line-width, electricallydriven localized emission in two-dimensional materials.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"26 40","pages":"13862–13870"},"PeriodicalIF":9.1,"publicationDate":"2026-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149088198","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

Tunable NonlinearLandscapes in Graphene NanoelectromechanicalSystems 石墨烯纳米机电系统中的可调谐非线性景观

IF 10.8 1区材料科学

Nano Letters Pub Date : 2026-10-14 DOI: 10.1021/acs.nanolett.6c03319

Ateesh K. Rathi,Rajan Singh,Javed A. Mondal,Arnab Sarkar,Ryan J. T. Nicholl,Kirill I. Bolotin,Saikat Ghosh

引用次数: 0

Weyl-Transition-Driven Giant Reversible Orbital Hall Conductivity 韦尔跃迁驱动的巨大可逆轨道霍尔电导率

IF 9.1 1区材料科学

Nano Letters Pub Date : 2026-10-14 Epub Date: 2026-09-29 DOI: 10.1021/acs.nanolett.6c04069

Bo Zhao, Hao Wang, Wei Ren, Hongbin Zhang

引用次数: 0

Transfer Medium Design for Fabrication of Graphene Barrier Films 制备石墨烯势垒膜的传递介质设计

IF 9.1 1区材料科学

Nano Letters Pub Date : 2026-10-14 Epub Date: 2026-09-30 DOI: 10.1021/acs.nanolett.6c03009

Mingpeng Shang, Li Yin, Saiyu Bu, Zhaoning Hu, Bingbing Guo, Hongyang Li, Yixuan Zhao, Junhao Liao, Hongjie Gao, Chaofan Zhou, Yuqing Kuai, Qi Lu, Zelong Li, Fan Liang, Haotian Wu, Zhiying Xu, Ge Chen, Wenzhe Zhang, Yanru Li, Lingmiao Ma, Zhuofeng Shi, Fangfang Li, Anbang Zhu, Xiaokai Hu, Pengzhan Sun, Qin Xie, Jianbo Yin, Kaicheng Jia, Luzhao Sun, Hailin Peng, Li Lin, Zhongfan Liu

{"title":"Transfer Medium Design for Fabrication of Graphene Barrier Films","authors":"Mingpeng Shang, Li Yin, Saiyu Bu, Zhaoning Hu, Bingbing Guo, Hongyang Li, Yixuan Zhao, Junhao Liao, Hongjie Gao, Chaofan Zhou, Yuqing Kuai, Qi Lu, Zelong Li, Fan Liang, Haotian Wu, Zhiying Xu, Ge Chen, Wenzhe Zhang, Yanru Li, Lingmiao Ma, Zhuofeng Shi, Fangfang Li, Anbang Zhu, Xiaokai Hu, Pengzhan Sun, Qin Xie, Jianbo Yin, Kaicheng Jia, Luzhao Sun, Hailin Peng, Li Lin, Zhongfan Liu","doi":"10.1021/acs.nanolett.6c03009","DOIUrl":"https://doi.org/10.1021/acs.nanolett.6c03009","url":null,"abstract":"Theoretically,defect-free monolayer graphene grown bychemicalvapor deposition can block nearly all gases and moisture, making ita promising material for large-scale flexible encapsulation in futurephotonic and electronic applications. However, the lack of reliabletransfer and fabrication methods that suppress the formation of transfer-inducedcracks and interlayer transport of water molecules in stacked graphenefilms severely limits the barrier performance of current graphene-basedbarrier films. In this work, we employed a dopant-incorporated polyvinylidenedifluoride with a concentration gradient as a transfer medium to suppresscrack formation during transfer through conformal graphene–polymercontact and to dope graphene, thereby hindering water diffusion throughenhanced water–graphene interactions. Consequently, the as-fabricatedbarrier film achieved an ultralow water vapor transmission rate valueof 9.3 × 10–5 g m–2 day–1. In addition, a home-built roll-to-roll transfersystem for continuous fabrication of graphene barrier films demonstratesthe scalability of this strategy and its potential for large-scaleflexible and transparent encapsulation.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"26 40","pages":"13819–13828"},"PeriodicalIF":9.1,"publicationDate":"2026-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149174033","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

Time-Integrated Phototransistor Based on Photoactive Gate Engineering for Ultra-Weak Light Detection 基于光活性门工程的时间集成光电晶体管超弱光检测。

IF 9.1 1区材料科学

Nano Letters Pub Date : 2026-10-14 Epub Date: 2026-09-28 DOI: 10.1021/acs.nanolett.6c03153

Yue Cheng, Yaoqiang Zhou, Shaoguang Zhao, Zekai Dong, Zheng Wei, Jian Zhang, Li Tao

引用次数: 0

Reservoir-Inspired Self-Circulating Instantaneous Discharge Triboelectric Nanogenerator (SCID-TENG) with Electrowetting-Enhanced Ultrahigh Power Density under Small Loads for Wireless Energy Delivery of Implantable Devices 水库启发自循环瞬时放电摩擦纳米发电机（SCID-TENG），具有电润湿增强的小负载下超高功率密度，用于可植入设备的无线能量输送

IF 9.1 1区材料科学

Nano Letters Pub Date : 2026-10-14 Epub Date: 2026-10-05 DOI: 10.1021/acs.nanolett.6c03125

Haopeng Shi, Yongkang Jia, Jiayu Ao, Yibai Wang, Maoshuo Chen, Fengyu Miao, Xinlei Chen, Qiumeng Chen, Qingying Ren, Jie Xu, Wei Xu, Wei Li

{"title":"Reservoir-Inspired Self-Circulating Instantaneous Discharge Triboelectric Nanogenerator (SCID-TENG) with Electrowetting-Enhanced Ultrahigh Power Density under Small Loads for Wireless Energy Delivery of Implantable Devices","authors":"Haopeng Shi, Yongkang Jia, Jiayu Ao, Yibai Wang, Maoshuo Chen, Fengyu Miao, Xinlei Chen, Qiumeng Chen, Qingying Ren, Jie Xu, Wei Xu, Wei Li","doi":"10.1021/acs.nanolett.6c03125","DOIUrl":"10.1021/acs.nanolett.6c03125","url":null,"abstract":"Battery-free wireless energy delivery is highly desiredfor implantablemedical devices (IMDs). Although triboelectric nanogenerators (TENGs)show promise, they often face challenges in delivering high powerdensity under small loads, limiting their capability to drive extracorporealtransmitters. Herein, we propose a self-circulating instantaneous-dischargeTENG (SCID-TENG) that decouples charge accumulation from instantaneousrelease. The SCID-TENG delivers 144.6 V and 20.9 W at 1 kΩ whilemaintaining a load-insensitive output from 1 kΩ to 1 MΩ.Integrating electrowetting-assisted charge injection (EWCI) with theSCID-TENG further boosts the output, yielding a peak power densityof 3922 W/m2. With incorporation into a wireless transmissionsystem, the device achieves a subcutaneous peak-to-peak voltage of145.8 V, 1.9 times that before EWCI. The SCID-TENG generates negligibleenergy per pulse, confirming its safety for direct contact. Collectively,this work achieves ultrahigh power density under small loads, providinga viable pathway toward wireless energy delivery of IMDs.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"26 40","pages":"13853–13861"},"PeriodicalIF":9.1,"publicationDate":"2026-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149088409","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