Nano Letters最新文献_第8页

Oriented Alignment of CsPbBr₃ Single-Crystal Arrays for Flexible X-ray Imaging. 用于灵活 X 射线成像的 CsPbBr3 单晶阵列定向排列。

IF 9.6 1区材料科学

Nano Letters Pub Date : 2024-09-18 Epub Date: 2024-09-03 DOI: 10.1021/acs.nanolett.4c03651

Jianglei Zhang, Weijun Li, Yifan Yang, Yuhong He, Zigao Tang, Haotong Wei, Junhu Zhang, Bai Yang

{"title":"Oriented Alignment of CsPbBr3 Single-Crystal Arrays for Flexible X-ray Imaging.","authors":"Jianglei Zhang, Weijun Li, Yifan Yang, Yuhong He, Zigao Tang, Haotong Wei, Junhu Zhang, Bai Yang","doi":"10.1021/acs.nanolett.4c03651","DOIUrl":"10.1021/acs.nanolett.4c03651","url":null,"abstract":"The utilization of perovskite materials in flexible optoelectronics is experiencing distinct diversification including X-ray detection applications. Here, we report the oriented alignment of cesium lead bromide (CsPbBr3) single-crystal arrays on flexible polydimethylsiloxane (PDMS) substrates. By precisely confining the crystallization process within spatially delimited precursor droplets, we achieve a well-oriented crystal alignment through the spontaneous rotation of the CsPbBr3 microcuboids. This approach allows for precise control over the microcuboid morphologies by varying the growth temperature. We design flexible X-ray detector arrays by seamlessly integrating CsPbBr3 microcuboids with electrode arrays. The flexible X-ray detector can output a high sensitivity of 1.97 × 105 μC·Gyair-1·cm-2 and a low detection limit of 89 nGyair·s-1 after the surface passivation process. The excellent mechanical properties, outstanding X-ray detection capabilities, and high pixel uniformity are also demonstrated in conformal X-ray imaging of curved surfaces.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":null,"pages":null},"PeriodicalIF":9.6,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142118319","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

Self-Driven Graphene Photodetector Arrays Enabled by Plasmon-Induced Asymmetric Electric Field. 利用等离子体诱导的不对称电场实现自驱动石墨烯光电探测器阵列。

IF 9.6 1区材料科学

Nano Letters Pub Date : 2024-09-18 Epub Date: 2024-09-03 DOI: 10.1021/acs.nanolett.4c03269

Li Zhang, Ximiao Wang, Zebo Zheng, Chen Zhang, Huajian Zheng, Chuan Liu, Huanjun Chen, Mengye Wang

{"title":"Self-Driven Graphene Photodetector Arrays Enabled by Plasmon-Induced Asymmetric Electric Field.","authors":"Li Zhang, Ximiao Wang, Zebo Zheng, Chen Zhang, Huajian Zheng, Chuan Liu, Huanjun Chen, Mengye Wang","doi":"10.1021/acs.nanolett.4c03269","DOIUrl":"10.1021/acs.nanolett.4c03269","url":null,"abstract":"Gap surface plasmon (GSP) modes enhance graphene photodetectors (GPDs)' performance by confining the incident light within nanogaps, giving rise to strong light absorption. Here, we propose an asymmetric plasmonic nanostructure array on planar graphene comprising stripe- and triangle-shaped sharp tip arrays. Upon light excitation, the noncentrosymmetric metallic nanostructures show strong light-matter interactions with localized field close to the surface of tips, causing an asymmetric electric field. These features can accelerate the hot electron generation in graphene, forming a directional diffusion current. Accordingly, the artificial GPDs exhibit a wavelength-dependence behavior covering the wavelength range from 0.8 to 1.6 μm, with three photoresponse maxima corresponding to the nanostructures' resonances. Additionally, the polarization-dependent GPDs can realize a responsivity of ∼25 mA/W and a noise equivalent power of ∼0.44 nW/Hz1/2 at zero bias when excited at the resonance of 1.4 μm. Overall, our study offers a new strategy for preparing compact and multifrequency infrared GPDs.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":null,"pages":null},"PeriodicalIF":9.6,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142118354","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

Dominant Scattering Mechanisms in Limiting the Electron Mobility of Scandium Nitride. 限制氮化钪电子迁移率的主要散射机制

IF 9.6 1区材料科学

Nano Letters Pub Date : 2024-09-18 Epub Date: 2024-09-06 DOI: 10.1021/acs.nanolett.4c02920

Sourav Rudra, Dheemahi Rao, Samuel Poncé, Bivas Saha

{"title":"Dominant Scattering Mechanisms in Limiting the Electron Mobility of Scandium Nitride.","authors":"Sourav Rudra, Dheemahi Rao, Samuel Poncé, Bivas Saha","doi":"10.1021/acs.nanolett.4c02920","DOIUrl":"10.1021/acs.nanolett.4c02920","url":null,"abstract":"Electron mobility in nitride semiconductors is limited by electron-phonon, defect, grain-boundary, and dislocation scatterings. Scandium nitride (ScN), an emerging rocksalt indirect bandgap semiconductor, exhibits varying electron mobilities depending on growth conditions. Since achieving high mobility is crucial for ScN's device applications, a microscopic understanding of different scattering mechanisms is extremely important. Utilizing the ab initio Boltzmann transport formalism and experimental measurements, here we show the hierarchy of various scattering processes in restricting the electron mobility of ScN. Calculations unveil that though Fröhlich interactions set an intrinsic upper bound for ScN's electron mobility of ∼524 cm2/V·s at room temperature, ionized-impurity and grain-boundary scatterings significantly reduce mobility. The experimental temperature dependence of mobilities is captured well considering both nitrogen-vacancy and oxygen-substitutional impurities with appropriate ratios, and room-temperature doping dependency agrees well with the empirical Caughey-Thomas model. Furthermore, we suggest modulation doping and polar-discontinuity doping to reduce ionized-impurity scattering in achieving a high-mobility ScN for device applications.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":null,"pages":null},"PeriodicalIF":9.6,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142138607","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

Purcell Enhancement and Spin Spectroscopy of Silicon Vacancy Centers in Silicon Carbide Using an Ultrasmall Mode-Volume Plasmonic Cavity. 利用超小模量等离子腔对碳化硅中的硅空位中心进行珀塞尔增强和自旋光谱分析

IF 9.6 1区材料科学

Nano Letters Pub Date : 2024-09-18 Epub Date: 2024-09-09 DOI: 10.1021/acs.nanolett.4c03233

Jae-Pil So, Jialun Luo, Jaehong Choi, Brendan McCullian, Gregory D Fuchs

引用次数: 0

Well-Dispersed Manganese-Oxo Clusters as Anode Materials for High-Performance Lithium Ion Batteries. 分散良好的锰氧团簇作为高性能锂离子电池的负极材料。

IF 9.6 1区材料科学

Nano Letters Pub Date : 2024-09-18 Epub Date: 2024-09-04 DOI: 10.1021/acs.nanolett.4c02887

Bitong Zhang, Tianyu Qiu, Yingqi Li, Yang Li, Feiyang Yu, Hongliang Dong, Yong-Hui Wang, Yang-Guang Li, Hua-Qiao Tan

{"title":"Well-Dispersed Manganese-Oxo Clusters as Anode Materials for High-Performance Lithium Ion Batteries.","authors":"Bitong Zhang, Tianyu Qiu, Yingqi Li, Yang Li, Feiyang Yu, Hongliang Dong, Yong-Hui Wang, Yang-Guang Li, Hua-Qiao Tan","doi":"10.1021/acs.nanolett.4c02887","DOIUrl":"10.1021/acs.nanolett.4c02887","url":null,"abstract":"Metal-oxo clusters show great promise in lithium ion battery applications as anode materials by virtue of their native nature of well-defined nanostructures and multielectron redox activities. However, their intrinsic unsatisfactory electrical conductivity and tendency to aggregation make them difficult to fully utilize. Herein, a well-dispersed Mn12O12(CH3COO)16(H2O)4 (denoted as Mn12) cluster is constructed by rationally adopting carbon dots (CDs) with nanosize and high conductivity as stabilizers. Thanks to the fully exposed redox sites of Mn12 clusters and additional interfacial energy storage mechanism, the optimized Mn12/CDs-1:20 anode delivers a high specific capacity of 1643 mAh g-1 at 0.2 A g-1 (0.25 C) and exhibits outstanding rate and cycling capabilities. This paper provides a green and efficient paradigm to synthesize well-dispersed manganese-oxo clusters for the first time and builds a new platform for cluster-based energy storage.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":null,"pages":null},"PeriodicalIF":9.6,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142124198","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

Rational Design of Quasi-1D Multicore-Shell MnSe@N-Doped Carbon Nanorods as High-Performance Anode Material for Sodium-Ion Batteries. 合理设计作为钠离子电池高性能负极材料的准一维多孔壳 MnSe@N 掺杂碳纳米棒

IF 9.6 1区材料科学

Nano Letters Pub Date : 2024-09-18 Epub Date: 2024-09-05 DOI: 10.1021/acs.nanolett.4c01408

Lei Wang, Fei Huang, Xinmei Song, Jiayi Li, Guoyin Zhu, Zhong Jin, Zhihui Dai

{"title":"Rational Design of Quasi-1D Multicore-Shell MnSe@N-Doped Carbon Nanorods as High-Performance Anode Material for Sodium-Ion Batteries.","authors":"Lei Wang, Fei Huang, Xinmei Song, Jiayi Li, Guoyin Zhu, Zhong Jin, Zhihui Dai","doi":"10.1021/acs.nanolett.4c01408","DOIUrl":"10.1021/acs.nanolett.4c01408","url":null,"abstract":"Sodium-ion batteries (SIBs) are considered one of the promising candidates for energy storage devices due to the low cost and low redox potential of sodium. However, their implementation is hindered by sluggish kinetics and rapid capacity decay caused by inferior conductivity, lattice deterioration, and volume changes of conversion-type anode materials. Herein, we report the design of a multicore-shell anode material based on manganese selenide (MnSe) nanoparticle encapsulated N-doped carbon (MnSe@NC) nanorods. Benefiting from the conductive multicore-shell structure, the MnSe@NC anodes displayed prominent rate capability (152.7 mA h g-1 at 5 A g-1) and long lifespan (132.7 mA h g-1 after 2000 cycles at 5 A g-1), verifying the essence of reasonable anode construction for high-performance SIBs. Systematic in situ microscopic and spectroscopic methods revealed a highly reversible conversion reaction mechanism of MnSe@NC. Our study proposes a promising route toward developing advanced transition metal selenide anodes and comprehending electrochemical reaction mechanisms toward high-performance SIBs.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":null,"pages":null},"PeriodicalIF":9.6,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142131187","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

Ultrasteep Slope Cryogenic FETs Based on Bilayer Graphene. 基于双层石墨烯的超深斜低温场效应晶体管。

IF 9.6 1区材料科学

Nano Letters Pub Date : 2024-09-18 Epub Date: 2024-09-04 DOI: 10.1021/acs.nanolett.4c02463

Eike Icking, David Emmerich, Kenji Watanabe, Takashi Taniguchi, Bernd Beschoten, Max C Lemme, Joachim Knoch, Christoph Stampfer

{"title":"Ultrasteep Slope Cryogenic FETs Based on Bilayer Graphene.","authors":"Eike Icking, David Emmerich, Kenji Watanabe, Takashi Taniguchi, Bernd Beschoten, Max C Lemme, Joachim Knoch, Christoph Stampfer","doi":"10.1021/acs.nanolett.4c02463","DOIUrl":"10.1021/acs.nanolett.4c02463","url":null,"abstract":"Cryogenic field-effect transistors (FETs) offer great potential for applications, the most notable example being classical control electronics for quantum information processors. For the latter, on-chip FETs with low power consumption are crucial. This requires operating voltages in the millivolt range, which are only achievable in devices with ultrasteep subthreshold slopes. However, in conventional cryogenic metal-oxide-semiconductor (MOS)FETs based on bulk material, the experimentally achieved inverse subthreshold slopes saturate around a few mV/dec due to disorder and charged defects at the MOS interface. FETs based on two-dimensional materials offer a promising alternative. Here, we show that FETs based on Bernal stacked bilayer graphene encapsulated in hexagonal boron nitride and graphite gates exhibit inverse subthreshold slopes of down to 250 μV/dec at 0.1 K, approaching the Boltzmann limit. This result indicates an effective suppression of band tailing in van der Waals heterostructures without bulk interfaces, leading to superior device performance at cryogenic temperature.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":null,"pages":null},"PeriodicalIF":9.6,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142131189","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

Programming DNA Nanoassemblies into Polyvalent Lysosomal Degraders for Potent Degradation of Pathogenic Membrane Proteins. 将 DNA 纳米组合编程为多价溶酶体降解剂，以有效降解致病性膜蛋白。

IF 9.6 1区材料科学

Nano Letters Pub Date : 2024-09-18 Epub Date: 2024-09-03 DOI: 10.1021/acs.nanolett.4c03102

Shuyi Yu, Tianhui Shi, Chenbiao Li, Chongyu Xie, Fuan Wang, Xiaoqing Liu

{"title":"Programming DNA Nanoassemblies into Polyvalent Lysosomal Degraders for Potent Degradation of Pathogenic Membrane Proteins.","authors":"Shuyi Yu, Tianhui Shi, Chenbiao Li, Chongyu Xie, Fuan Wang, Xiaoqing Liu","doi":"10.1021/acs.nanolett.4c03102","DOIUrl":"10.1021/acs.nanolett.4c03102","url":null,"abstract":"Lysosome-targeting chimera (LYTAC) shows great promise for protein-based therapeutics by targeted degradation of disease-associated membrane or extracellular proteins, yet its efficiency is constrained by the limited binding affinity between LYTAC reagents and designated proteins. Here, we established a programmable and multivalent LYTAC system by tandem assembly of DNA into a high-affinity protein degrader, a heterodimer aptamer nanostructure targeting both pathogenic membrane protein and lysosome-targeting receptor (insulin-like growth factor 2 receptor, IGF2R) with adjustable spatial distribution or organization pattern. The DNA-based multivalent LYTACs showed enhanced efficacy in removing immune-checkpoint protein programmable death-ligand 1 (PD-L1) and vascular endothelial growth factor receptor 2 (VEGFR2) in tumor cell membrane that respectively motivated a significant increase in T cell activity and a potent effect on cancer cell growth inhibition. With high programmability and versatility, this multivalent LYTAC system holds considerable promise for realizing protein therapeutics with enhanced activity.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":null,"pages":null},"PeriodicalIF":9.6,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142118352","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

Ultrasmall Prussian Blue Nanozyme Attenuates Osteoarthritis by Scavenging Reactive Oxygen Species and Regulating Macrophage Phenotype. 超微普鲁士蓝纳米酶通过清除活性氧和调节巨噬细胞表型缓解骨关节炎

IF 9.6 1区材料科学

Nano Letters Pub Date : 2024-09-18 Epub Date: 2024-09-03 DOI: 10.1021/acs.nanolett.4c03314

Zhiguo Qin, Xiaofei Li, Peng Wang, Qian Liu, Yan Li, Aihua Gu, Qing Jiang, Ning Gu

{"title":"Ultrasmall Prussian Blue Nanozyme Attenuates Osteoarthritis by Scavenging Reactive Oxygen Species and Regulating Macrophage Phenotype.","authors":"Zhiguo Qin, Xiaofei Li, Peng Wang, Qian Liu, Yan Li, Aihua Gu, Qing Jiang, Ning Gu","doi":"10.1021/acs.nanolett.4c03314","DOIUrl":"10.1021/acs.nanolett.4c03314","url":null,"abstract":"Osteoarthritis (OA) is a degenerative joint disease characterized by obscure etiology and unsatisfactory therapeutic outcomes, making the development of new efficient therapies urgent. Superfluous reactive oxygen species (ROS) have historically been considered one of the crucial factors inducing the pathological progression of OA. Ultrasmall Prussian blue nanoparticles (USPBNPs), approximately sub-5 nm in size, are developed by regulating the configuration of polyvinylpyrrolidone chains. USPBNPs display an excellent ROS eliminating capacity and catalase-like activity, capable of decomposing hydrogen peroxide (H2O2) into O2. The anti-inflammatory mechanism of USPBNPs can be attributed to repolarizing macrophages from pro-inflammatory M1 to anti-inflammatory M2 phenotype by decreasing the ROS levels accompanied by O2 improvement. Additionally, USPBNPs exhibit an exciting therapeutic efficiency against OA, comparable to that of hydrocortisone in vivo. This study not only develops a new therapeutic agent for OA but also offers an estimable insight into the application of the nanozyme.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":null,"pages":null},"PeriodicalIF":9.6,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142118357","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

Bioinspired Intelligent Ferrofluid: Old Magnetic Material with New Optical Properties. 生物启发智能铁流体：具有新光学特性的旧磁性材料。

IF 9.6 1区材料科学

Nano Letters Pub Date : 2024-09-18 Epub Date: 2024-09-06 DOI: 10.1021/acs.nanolett.4c03083

Xuesen Zhang, Kai Hou, Yue Long, Kai Song

引用次数: 0