Nano Letters最新文献

{"title":"Modulating Ionic Hysteresis to Selective Interaction Mechanism toward Transition from Supercapacitor-Memristor to Supercapacitor-Diode","authors":"Pei Tang, Pengwei Jing, Zhiyuan Luo, Kekang Liu, Wuyang Tan, Qianqian Yao, Zhancai Qiu, Yanghui Liu, Qingyun Dou, Xingbin Yan","doi":"10.1021/acs.nanolett.5c00596","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c00596","url":null,"abstract":"The emerging ion-confined transport supercapacitors, including supercapacitor-diodes (CAPodes) and supercapacitor-memristors (CAPistors), offer potential for neuromorphic computing, brain–computer interface, signal propagation, and logic operations. This study reports a novel transition from CAPistor to CAPode via electrochemical cycling of a ZIF-7 electrode. X-ray absorption fine structure (XAFS) and electrochemical analyses reveal a shift from “ionic hysteresis” to “ionic selective interaction” in an alkaline electrolyte, elucidating the evolution of ionic devices. The CAPodes exhibit high rectification ratios, long cycling stability, and effective current blocking in reverse bias. Additionally, they are demonstrated in ionic logic circuits (“AND” and “OR” gates), with comparisons to traditional electronic diodes. This work advances the development of functional supercapacitors and iontronic devices for future capacitive computing architectures.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"320 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143661066","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}

{"title":"Correction to “Twist-Dependent Semiconductor-to-Metal Transition in Epitaxial Bilayer α-Antimonene”","authors":"Peiyao Xiao, Ji Li, Douxing Pan, Yongkai Li, Kejun Yu, Xu Zhang, Lu Qiao, Xianglin Peng, Lin Hu, Dongfei Wang, Zhiwei Wang, Wende Xiao, Yugui Yao","doi":"10.1021/acs.nanolett.5c01362","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c01362","url":null,"abstract":"The corrections of our original paper involve a typographical error and an addition to Figure 5. On page 3168, paragraph 1, line 2 of the original paper, the calculated lattice constants should be corrected to “<i>a</i>₁ = 21.81 Å and <i>b</i>₁ = 19.11 Å”. The same typographical error also occurs on page 3, paragraph 1, line 1 of the Supporting Information. The corrected version is as follows “The lattice constants of the supercell used in the DFT calculations for the 39°-twisted bilayer α-Sb were <i>a</i>₁ = 21.81 Å and <i>b</i>₁ = 19.11 Å with an angle of 89° between the <i>a</i>₁- and <i>b</i>₁-lattice vectors.” Figure 5. Measured d<i>I</i>/d<i>V</i> spectra and calculated band structures of monolayer and bilayer α-Sb. (a) d<i>I</i>/d<i>V</i> spectra of the monolayer, AB-stacked bilayer and 39°-twisted bilayer α-Sb. (b) Zoom-in STS near the Fermi level. The black, red and blue lines are assigned to the monolayer, AB-stacked bilayer and 39°-twisted bilayer α-Sb, respectively. The Brillouin zone and calculated band structures of the (c) monolayer, (d) AB-stacked bilayer and (e) 39°-twisted bilayer α-Sb, respectively. The size of the blue and red dots represents the weight of the p_<i>x</i>+p_<i>y</i> and p_<i>z</i> orbitals. We have also added illustrations of the Brillouin zone to Figure 5c–e. The corrected Figure 5 is shown below. We sincerely apologize for any inconvenience caused by these corrections. These corrections do not alter any discussion or conclusion in the paper. The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acs.nanolett.5c01362. Temperature 10 K with initial twisted angle of 30° within 1ns for quasi-stable test of 39°-twisted bilayer α-Sb (AVI) Temperature 50 K with initial twisted angle of 50° within 1ns for quasi-stable test of 39°-twisted bilayer α-Sb (AVI) Correction\u0000to “Twist-Dependent Semiconductor-to-Metal\u0000Transition in Epitaxial Bilayer α‑Antimonene” <span> 0 </span><span> views </span> <span> 0 </span><span> shares </span> <span> 0 </span><span> downloads </span> Most electronic Supporting Information files are available without a subscription to ACS Web Editions. Such files may be downloaded by article for research use (if there is a public use license linked to the relevant article, that license may permit other uses). Permission may be obtained from ACS for other uses through requests via the RightsLink permission system: http://pubs.acs.org/page/copyright/permissions.html. This article has not yet been cited by other publications.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"70 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143661070","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}

{"title":"Deep Learning-Assisted SERS for Therapeutic Drug Monitoring of Clozapine in Serum on Plasmonic Metasurfaces","authors":"Peng Zheng, Steve Semancik, Ishan Barman","doi":"10.1021/acs.nanolett.5c00391","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c00391","url":null,"abstract":"Clozapine is widely regarded as one of the most effective therapeutics for treatment-resistant schizophrenia. Despite its proven efficacy, the therapeutic use of clozapine is complicated by its narrow therapeutic index, which necessitates rapid and precise therapeutic drug monitoring (TDM) to optimize patient outcomes and minimize adverse effects. However, conventional techniques, such as high-performance liquid chromatography, are limited by their high costs, complex instrumentation, and long turnaround times. Herein, we propose a novel approach that integrates artificial neural networks (ANNs) with surface-enhanced Raman spectroscopy (SERS) on a plasmonic metasurface for rapid TDM of clozapine and its two primary metabolites, norclozapine and clozapine-N-oxide, in human serum. The ANN-SERS strategy enables accurate classification and robust concentration prediction of the three analytes. We envision that the integrated ANN-SERS framework could deliver a scalable biomedical diagnostic and therapeutic tool for studying a wide variety of chemical and biological molecules in clinical settings.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"26 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143661065","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}

{"title":"Tuning Internal Stress in Metals with Bimodal Particles for Exceptional Strength and Ductility","authors":"Guodong Zhang, Yukai Xiong, Bingkun Zou, Bo Cui, Xiao Zhou, Qiubao Ouyang, Xu Zhang, Di Zhang, Zan Li, Y. Morris Wang","doi":"10.1021/acs.nanolett.5c00162","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c00162","url":null,"abstract":"Microstructural heterogeneity and associated nonuniform internal stress in metallic materials are crucial for achieving excellent mechanical properties. However, general methods for controlling such heterogeneity remain scarce. Metal matrix composites are intrinsically heterogeneous materials with tunable microstructures. Here, we developed a micron/nano-bimodal reinforcement structure that optimizes internal stress distribution, which not only reduces local stress concentration at interfaces but also facilitates the extensive activation of nonpreferential slip systems in alloys. As a result, the representative Al2024 alloy exhibits an extraordinary true tensile strength of ∼750 MPa and impressive ductility (with elongation-to-failure exceeding 10%). Stress delocalization at interfaces and strong local dislocation interactions are synchronously prompted through internal stress tuning at the nanoscale, with the optimized size of fine particles being ∼1/10 of coarse reinforcing particles, contributing to sustained dislocation accumulation and, consequently, large tensile ductility.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"214 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143666518","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}

{"title":"Nanofiber Aerogel with Rigidity-Flexibility Synergy","authors":"Chunmei Li, Yuan Wang, Junze Guo, Yihao Yuan, Di Hu, Qun Zhou, Wei Liu, Jiawei Liu, Xueping Zhang, Peng Wang","doi":"10.1021/acs.nanolett.4c06384","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c06384","url":null,"abstract":"In aerogel-based thermal insulation materials, the challenge of balancing mechanical properties (rigidity and flexibility) while enhancing thermal performance under extreme temperature and humidity conditions persists. This study introduces an innovative biomimetic aerogel design combining features of shell-like layered architecture and loofah porous microstructures. We developed polyimide/polyvinylidene fluoride (PI/PVDF) nanofiber aerogels with excellent thermal insulation and mechanical properties. The material can withstand compressive loads up to 1500 times its weight with axial rigidity, while maintaining radial flexibility under 80% strain, thereby achieving a harmonious balance between structural rigidity and flexibility. The inclusion of hydrophobic PVDF nanofibers ensures the material maintains low thermal conductivity and structural integrity, even under extreme humidity and temperature changes. This multifeature fusion biomimetic aerogel shows great potential for aerospace applications, such as spacecraft thermal protection systems, effectively shielding components from thermal and mechanical stress during re-entry and space missions.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"3 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143666517","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}

{"title":"In Situ Grain Boundary Engineering Enabling Ultralong Stable Cycling Garnet-Based Solid-State Electrolytes","authors":"Zichang You, Chujun Zheng, Jiaxin Wu, Huayan Huang, Chengshuai Bao, Yan Lu, Zhaoyin Wen","doi":"10.1021/acs.nanolett.4c05482","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c05482","url":null,"abstract":"Solid-state lithium metal batteries (SSLMBs) are promising next-generation energy storage due to their high safety and energy density, but lithium dendrite growth in solid electrolytes hinders their application. We propose an in situ grain boundary (GB) modification strategy using LiTaO₃ (LTO) reacting with Ta-doped garnet electrolyte to form a pseudocrystal Li₃TaO₄/Zr₃O (LZT) phase at GBs. The LZT phase reduces electronic conductivity, inhibits abnormal grain growth, strengthens GBs bonding, and enhances fracture toughness, effectively suppressing dendrite formation. The modified electrolyte (2LTaO) achieves an ultralow electronic conductivity of 8.58 × 10^–9 S cm^–1. Symmetrical Li | 2LTaO | Li cells demonstrate a high critical current density of 2.2 mA cm^–2 and stable cycling for 12,000 h at 0.3 mA cm^–2. Full cells exhibit excellent cycling stability and rate performance. This strategy provides a promising approach for the development of high-performance SSLMBs.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"16 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143661069","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}

{"title":"Direct Imaging of the Organic-Inorganic Interfacial Transformation.","authors":"Tianjiao Hong, Pengfei Tian, Fuzhen Xuan","doi":"10.1021/acs.nanolett.4c06631","DOIUrl":"10.1021/acs.nanolett.4c06631","url":null,"abstract":"<p><p>The organic-inorganic interfacial nanostructures between fillers and the matrix play a crucial role in the performance of polymer composites. Here we propose an <i>in situ</i> cryogenic transmission electron microscope technique (cryo-TEM) approach to directly observe the organic-inorganic interfacial transformation in a toluene diisocyanate (TDI)-based polyurethane composite during its synthesis process. Elliptical protrusions growing radially outward from the filler surface, which serve as the critical intermediate nanostructures of the interface layer, are observed by <i>in situ</i> cryo-TEM, indicating that the interface layer is formed through a curing reaction of the prepolymer molecules anchored on the filler surface. Both decreasing filler sizes and adding coupling agents can enhance the interfacial interactions. The addition of 0.05 wt % coupling agent increases the interface thickness from 83.93 to 129.31 nm and improves the fracture toughness of the composite by 75.1%. These findings provide new insights for rationally designing interfacial nanostructures and high-performance polymer composites.</p>","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":" ","pages":"4408-4415"},"PeriodicalIF":9.6,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143595859","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}

{"title":"Optimizing Excited Charge Dynamics in Layered Halide Perovskites through Compositional Engineering","authors":"Pabitra Kumar Nayak, Dibyajyoti Ghosh","doi":"10.1021/acs.nanolett.5c01223","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c01223","url":null,"abstract":"Dion-Jacobson phase multilayered halide perovskites (MLHPs) improve carrier transport and optoelectronic performance thanks to their shorter interlayer distance, long carrier lifetimes, and minimized nonradiative losses. However, limited atomistic insights into dynamic structure–property relationships hinder rational design efforts to further boost their performance. Here, we employ nonadiabatic molecular dynamics, time-domain density functional theory, and unsupervised machine learning to uncover the impact of A-cation mixing on controlling the excited carrier dynamics and recombination processes in MLHPs. Mixing smaller-sized Cs with methylammonium in MLHP weakens electron–phonon interactions, suppresses the nonradiative losses, and slows down intraband hot electron relaxations. On the contrary, larger-sized guanidinium incorporation accelerates nonradiative relaxations. The mutual information analyses reveal the importance of interlayer distances, intra- and interoctahedral angle dynamics, and A-cation motion in extending the excited carrier lifetime by mitigating nonradiative losses in MLHPs. Our work provides a guideline for strategically choosing A-cations to boost the optoelectronic performance of layered halide perovskites.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"124 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143660671","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}

{"title":"Facet-Selective Growth of Dots-on-Plate II-VI Heterostructures for Efficient Photocatalytic Hydrogen Evolution.","authors":"Xuefei Li, Feiyue Ge, Chi Zhang, Jiaxin Wei, Ying Wang, Ya-Min Li, Xinrui Zhu, Wei Zhang, Xue-Jun Wu, Li Zhai, Bin Zhai","doi":"10.1021/acs.nanolett.5c00432","DOIUrl":"10.1021/acs.nanolett.5c00432","url":null,"abstract":"<p><p>High-level control over the surface and interface of II-VI heterostructures is crucial for enhancing charge separation and optimizing active sites, thus improving photocatalytic performance. However, due to variations in surface energy and atomic arrangement among different crystal facets, achieving selective growth of specific facets remains a significant challenge. Herein, we have achieved the selective growth of CdSe or ZnSe dots on the lateral facets or basal facets of two-dimensional CdS or ZnS nanoplates by carefully selecting Se source precursors with different reaction activities. The lateral-ZnSe/CdS exhibit enhanced activity for photocatalytic hydrogen evolution compared to that of basal-ZnSe/CdS, attributed to the high exposure ratio of the basal facets and the effective modulation of photoinduced electron-hole pairs at the lateral-ZnSe/CdS interfaces. This work expands the structural diversity of II-VI heterostructures and also provides a viable strategy to enhance their photocatalytic performance by tailoring the surface and interface structures.</p>","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":" ","pages":"4560-4567"},"PeriodicalIF":9.6,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143595940","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}

{"title":"Molecular–Cellular Two-Pronged Reprogramming of Inflammatory Soft-Tissue Interface with an Immunosuppressive Pure DNA Hydrogel","authors":"Minjuan Zhong, Lili Zhang, Zhiqiang Wang, Wenya Dang, Hong Chen, Ting Li, Yanlan Liu, Weihong Tan","doi":"10.1021/acs.nanolett.4c05340","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c05340","url":null,"abstract":"Effective modulation of persistent inflammation is crucial for chronic wound healing. However, the interaction cascade between inflammatory factors and immune cells at the soft-tissue wound interface poses an incredible challenge for this purpose. Here, we report an immunosuppressive pure DNA hydrogel (Is-pDNAgel) that reprograms inflammatory responses from both molecular and cellular dimensions. Specifically, high-density negative charges enable Is-pDNAgel to efficiently scavenge free chemokines, mitigating neutrophil and macrophage infiltration. Moreover, its immunosuppressive domain synergistically acts on activated residual immune cells and suppresses multiple proinflammatory signaling pathways, thereby creating a positive circuit to boost anti-inflammatory efficacy. Is-pDNAgel can further facilitate migration and proliferation of endogenous endothelial cells owing to its intrinsic extracellular matrix-mimicking structure, promoting re-epithelialization and neovascularization for tissue regeneration without additional bioactive components. Such an “all-in-one” hydrogel outperforms a commercial dressing to accelerate the healing of chronic wounds in a diabetic mouse model, offering a valuable tool for developing regenerative medicine.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"56 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143661068","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}