Nano Letters最新文献

Annealing Effects on Cu Migration in the Colloidal Synthesis of Pd-Chalcogenides Nanoheterostructures. 退火对钯硫族化合物纳米异质结构胶体合成中Cu迁移的影响。

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-07-31 DOI: 10.1021/acs.nanolett.5c02469

Suvodeep Sen,Niraj Nitish Patil,Ankita Bora,Manoj Palabathuni,Temilade Esther Adegoke,Kevin M Ryan,Kevin Rossi,Shalini Singh

{"title":"Annealing Effects on Cu Migration in the Colloidal Synthesis of Pd-Chalcogenides Nanoheterostructures.","authors":"Suvodeep Sen,Niraj Nitish Patil,Ankita Bora,Manoj Palabathuni,Temilade Esther Adegoke,Kevin M Ryan,Kevin Rossi,Shalini Singh","doi":"10.1021/acs.nanolett.5c02469","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c02469","url":null,"abstract":"Heterostructuring nanocrystals into a modular metal-semiconductor configuration enables tunable and novel functionalities. Such combinations at the nanoscale equip hybrid structures with unique electronic, optical, and catalytic properties unobserved in single-phase materials. Here, we report the hot-injection synthesis of Pd-Cu3Pd13S6.65Te0.35 nanoheterostructures (NHCs) from PdCu nanoalloy seeds. First, the growth of Pd-rich chalcogenide nanocrystals was initiated over the preformed PdCu surface through simultaneous sulfidation and tellurization, followed by their transformation into Pd-Cu3Pd13S6.65Te0.35 NHCs. By strategically employing moderate-temperature annealing, we achieved the complete migration of Cu+ due to the higher reactivity of Cu in comparison to Pd at that temperature, establishing a novel mechanistic relationship between cation mobility and temperature. This strategy enables controlled semiconductor domain formation and targeted metal migration. The NHCs showed efficient and stable electrocatalytic hydrogen evolution with low Tafel values in acidic media, outperforming conventional nanoelectrocatalysts. Computational analysis identified the active sites responsible for the observed catalytic performance.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"25 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144748147","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

IF 9.1 1区材料科学

Nano Letters Pub Date : 2025-07-30

Xia Chen, Jingyu Guan, Yong Zheng*, Ruifeng Chen, Minghui Lv, Yan Yan, Min Chen, Mingkai Liu*, Xinlong Tian* and Liqun Ye*,

引用次数: 0

IF 9.1 1区材料科学

Nano Letters Pub Date : 2025-07-30

Fan Yi, Shenghao Jin, Boxiang Wang* and Changying Zhao*,

引用次数: 0

IF 9.1 1区材料科学

Nano Letters Pub Date : 2025-07-30

Xingyu Yang, Chantal Hareau and Mathieu Mivelle*,

引用次数: 0

IF 9.1 1区材料科学

Nano Letters Pub Date : 2025-07-30

Wenbin Tu, Yonghui Zhao, Jiyuan Xue, Yuan Tian, Yuhao Hong, Jian-Feng Li, Na Liu, Chuying Ouyang, Haitang Zhang*, Ziyang Ning*, Li Zhang*, Yu Qiao* and Shi-Gang Sun,

引用次数: 0

IF 9.1 1区材料科学

Nano Letters Pub Date : 2025-07-30

Zi-Han Guo, Chao Yan, Jia-Qi He, Ke Lv, Kenji Watanabe, Takashi Taniguchi, Ya-Ning Ren* and Lin He*,

引用次数: 0

Programmed Assembly of IrAu12 Nanoclusters into Dimers and Trimers: Electron Microscopy Observation and Spectroscopic Characterization. 程序组装成二聚体和三聚体的IrAu12纳米簇：电子显微镜观察和光谱表征。

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-07-30 DOI: 10.1021/acs.nanolett.5c02770

Yuto Fukumoto,Shinjiro Takano,Yosuke Asami,Haru Hirai,Koji Harano,Tatsuya Tsukuda

{"title":"Programmed Assembly of IrAu12 Nanoclusters into Dimers and Trimers: Electron Microscopy Observation and Spectroscopic Characterization.","authors":"Yuto Fukumoto,Shinjiro Takano,Yosuke Asami,Haru Hirai,Koji Harano,Tatsuya Tsukuda","doi":"10.1021/acs.nanolett.5c02770","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c02770","url":null,"abstract":"Ligand-protected gold nanoclusters have attracted attention as building blocks for functional materials. In this study, we have demonstrated the programmed assembly of the icosahedral Ir@Au12 nanoclusters into a dimer, a linear trimer, linear oligomers, or a triangular trimer via the reaction between IrAu12 with predefined binding sites and bi- or tridentate isocyanide linkers. The formation of the intended structures was confirmed by high-angle annular dark-field scanning transmission electron microscopy using a newly developed sampling protocol. Statistical analysis of the interparticle distances provided quantitative structure models consistent with the theoretically predicted structures. The linear oligomers exhibited a new absorption peak at ∼480 nm. Theoretical calculations indicated that the electron transfers from the IrAu12 moiety to the linker ligand or another IrAu12 moiety involve the absorption. This study demonstrates that programmed assemblies of Au nanoclusters will provide an opportunity to elucidate how novel collective properties arise through assembly.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"1 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144737438","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

Phase-Shifting Structured Illumination with a Polarization-Encoded Metasurface. 偏振编码超表面相移结构照明。

IF 9.1 1区材料科学

Nano Letters Pub Date : 2025-07-30 Epub Date: 2025-07-17 DOI: 10.1021/acs.nanolett.5c02789

Linzhi Yu, Jesse Pietila, Haobijam Johnson Singh, Humeyra Caglayan

{"title":"Phase-Shifting Structured Illumination with a Polarization-Encoded Metasurface.","authors":"Linzhi Yu, Jesse Pietila, Haobijam Johnson Singh, Humeyra Caglayan","doi":"10.1021/acs.nanolett.5c02789","DOIUrl":"10.1021/acs.nanolett.5c02789","url":null,"abstract":"<p><p>Phase-shifting structured illumination is a powerful technique used across diverse imaging modalities including 3D surface measurement, quantitative phase imaging, and super-resolution microscopy. However, conventional implementations often rely on mechanically or optoelectronically driven complex systems, limiting the compactness, stability, and integration. Here, we present a polarization-controlled dielectric metasurface that generates phase-shifting fringe patterns in the visible spectrum, enabling compact and robust structured light projection. The metasurface encodes distinct phase gratings for orthogonal polarizations, producing fringe patterns with lateral displacements that vary with the transmitted polarization. We experimentally demonstrate high-quality fringe generation and apply the structured illumination in a fringe projection profilometry system for the 3D surface measurement of different objects. The metasurface integrates multiple phase-shifting steps into a single static device, offering a millimeter-scale footprint and compatibility with polarization multiplexing. This approach introduces a compact, passive solution for structured light generation with broad potential in optical metrology and computational imaging.</p>","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":" ","pages":"11696-11702"},"PeriodicalIF":9.1,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144657817","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

Current Crowding in a High-Efficiency Black Phosphorus Light-Emitting Diode Using a Reflective Back Contact. 利用反射背触点的高效黑磷发光二极管中的电流拥挤。

IF 9.1 1区材料科学

Nano Letters Pub Date : 2025-07-30 Epub Date: 2025-07-18 DOI: 10.1021/acs.nanolett.5c01829

Julien Brodeur, Éloïse Rahier, Mathieu Chartray-Pronovost, Étienne Robert, Oussama Moutanabbir, Stéphane Kéna-Cohen

引用次数: 0

IF 9.1 1区材料科学

Nano Letters Pub Date : 2025-07-30

Junyi She, Xin Liu, Haoliang Liu, Hao Yu, Jianyu Wang, Zhiheng Shen, Bing Xiao, Yonghong Cheng, Zongyou Yin* and Guodong Meng*,

引用次数: 0