Nano Letters最新文献_第3页

Deriving Material Properties from Feedback Error Signals in Scanning Tunneling Microscopy

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-02-12 DOI: 10.1021/acs.nanolett.4c06404

Nileema Sharma, James McKenzie, Matthew Toole, Brenden R. Ortiz, Andrea Capa Salinas, Stephen D. Wilson, Xiaolong Liu

{"title":"Deriving Material Properties from Feedback Error Signals in Scanning Tunneling Microscopy","authors":"Nileema Sharma, James McKenzie, Matthew Toole, Brenden R. Ortiz, Andrea Capa Salinas, Stephen D. Wilson, Xiaolong Liu","doi":"10.1021/acs.nanolett.4c06404","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c06404","url":null,"abstract":"Imperfections in measurements, e.g., deviations and broadening, are not devoid of information; rather, they can reveal valuable physical properties and processes. Scanning tunneling microscopy leverages a negative feedback loop to regulate the tunneling current. Practically, current fluctuates around its set point, and such deviations are considered insignificant and ignored. Here, we investigate the information embedded in these deviations. In the constant-current mode with an active feedback loop, we observe an unexpected persistent DC current offset from its set point when the tunneling junction is periodically perturbed. We demonstrate both experimentally and theoretically that such error signals encode local tunneling barrier heights and the square of local differential conductance as a consequence of the interplay between rectification and active feedback compensation. We provide evidence on the generalizability of this phenomenology to other negative feedback systems. This new approach has the potential to broadly impact physical sciences by allowing rapid measurements without lock-in amplifiers.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"10 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143393891","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

Identification and Screening of Trace and Multityped Solvents Using Transpiration-Driven Electrokinetic Generation Principle.

IF 9.6 1区材料科学

Nano Letters Pub Date : 2025-02-12 Epub Date: 2025-01-30 DOI: 10.1021/acs.nanolett.4c05840

Wenli Gao, Mengfei Yu, Leitao Cao, Piao Wen, Yi Sun, Jing Ren, Shengjie Ling

{"title":"Identification and Screening of Trace and Multityped Solvents Using Transpiration-Driven Electrokinetic Generation Principle.","authors":"Wenli Gao, Mengfei Yu, Leitao Cao, Piao Wen, Yi Sun, Jing Ren, Shengjie Ling","doi":"10.1021/acs.nanolett.4c05840","DOIUrl":"10.1021/acs.nanolett.4c05840","url":null,"abstract":"Transpiration-driven electrokinetic power generators (TEPGs) hold promising potential for intelligent chemical sensing applications, enabling the efficient identification and screening of organic solvents. Here, we report a novel TEPG-based chemical sensor using MoS2-doped cellulose filter paper for efficient detection of poplar solvents like water, alcohols, and methanol. TEPGs operate by leveraging capillary-driven transpiration to induce solvent flow through porous materials, leading to ion migration and the formation of electrical double layers (EDLs) at the solid-liquid interfaces. This process generates a potential difference, enabling the conversion of the mechanical transpiration energy into electrical signals. Integrated with machine learning algorithms and IoT technologies, the sensor achieves real-time classification of the solvents. This TEPG-CS system offers enhanced sensitivity, reliability, and operational adaptability, overcoming the limitations of the traditional detection methods. This work has broad potential for environmental monitoring, industrial applications, and biomedical fields, offering another pathway for advanced solvent detection and classification systems.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":" ","pages":"2396-2403"},"PeriodicalIF":9.6,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143062140","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

Superhydrophobic Luminescent Pixel Array Based on Perovskite Quantum Dots for Outdoor Displays.

IF 9.6 1区材料科学

Nano Letters Pub Date : 2025-02-12 Epub Date: 2025-01-31 DOI: 10.1021/acs.nanolett.4c06610

Ziyi Chen, Jun Chen, Teng Ma, Weishu Guo, Xiaojing Li, Jiancheng Lai, Haibo Zeng, Zhenhua Li

引用次数: 0

Revisiting the Facet Control in the Growth of Au Nanobipyramids.

IF 9.6 1区材料科学

Nano Letters Pub Date : 2025-02-12 Epub Date: 2025-01-31 DOI: 10.1021/acs.nanolett.4c05695

Liping Huang, An Su, Qian Wang, Jie Huang, Hongyu Chen

引用次数: 0

Dense Liquid Precursor in Mineral Crystallization: Spinodal Morphology and High Viscosity Evidenced by Electron Imaging.

IF 9.6 1区材料科学

Nano Letters Pub Date : 2025-02-12 Epub Date: 2025-01-31 DOI: 10.1021/acs.nanolett.4c05556

Jade Raimbault, Corinne Chevallard, Driss Ihiawakrim, Vinavadini Ramnarain, Ovidiu Ersen, Frédéric Gobeaux, David Carriere

引用次数: 0

Chiral Guided Mode Resonance with Independently Controllable Quality Factor and Circular Dichroism.

IF 9.6 1区材料科学

Nano Letters Pub Date : 2025-02-12 Epub Date: 2025-01-31 DOI: 10.1021/acs.nanolett.4c06157

Zhancheng Li, Shiwang Yu, Guangzhou Geng, Jiaqi Cheng, Wenwei Liu, Yuebian Zhang, Junjie Li, Hua Cheng, Shuqi Chen

引用次数: 0

Undercoordinated Two-Dimensional Pt Nanoring Stabilized by a Ring-on-Sheet Nanoheterostructure for Highly Efficient Alkaline Hydrogen Evolution Reaction

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-02-12 DOI: 10.1021/acs.nanolett.4c05833

Chen Ma, Weiwei Chen, Yanjie Wu, Wenbin Wang, Lei Xu, Changsheng Chen, Long Zheng, Gang Wang, Peng Han, Ping Gu, Xiao Wang, Ye Zhu, Zhiyuan Zeng, Hongyan He, Qiyuan He, Zhihai Ke, Dong Su, Ye Chen

{"title":"Undercoordinated Two-Dimensional Pt Nanoring Stabilized by a Ring-on-Sheet Nanoheterostructure for Highly Efficient Alkaline Hydrogen Evolution Reaction","authors":"Chen Ma, Weiwei Chen, Yanjie Wu, Wenbin Wang, Lei Xu, Changsheng Chen, Long Zheng, Gang Wang, Peng Han, Ping Gu, Xiao Wang, Ye Zhu, Zhiyuan Zeng, Hongyan He, Qiyuan He, Zhihai Ke, Dong Su, Ye Chen","doi":"10.1021/acs.nanolett.4c05833","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c05833","url":null,"abstract":"Platinum (Pt) is a state-of-the-art electrocatalyst for green hydrogen production in alkaline electrolytes. The delicate design and fabrication of two-dimensional (2D) Pt nanocatalysts can significantly enhance atomic utilization efficiency, while further improving intrinsic catalytic performance by modulating the density of surface active sites. However, the high surface energy and morphology complexity of 2D nanostructures often result in poor structural stability under the working conditions. Here, we report the synthesis of a 2D ring-on-sheet nanoheterostructure featuring abundant low-coordination Pt sites in which a defect-rich Pt nanoring is stabilized by an ultrathin 2D rhodium (Rh) support. The Rh@Pt nanoring exhibits remarkably enhanced activity and stability in an electrocatalytic hydrogen evolution reaction in alkaline media compared to defect-free Rh@Pt core–shell nanoplates and commercial Pt/C. This work provides new insights for the design and synthesis of 2D nanoheterostructures with abundant surface active sites for efficient and durable electrocatalysis.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"3 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143393893","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

Lithium Deposition Mechanism under Different Thermal Conditions Unraveled via an Optimized Phase Field Model.

IF 9.6 1区材料科学

Nano Letters Pub Date : 2025-02-12 Epub Date: 2025-01-31 DOI: 10.1021/acs.nanolett.4c06505

Guowei Tang, Libo Men, Yilin Wang, Rong Xu, Yucan Peng

引用次数: 0

On-Chip Cascaded Metasurfaces for Visible Wavelength Division Multiplexing and Color-Routing Meta-Display.

IF 9.6 1区材料科学

Nano Letters Pub Date : 2025-02-12 Epub Date: 2025-01-30 DOI: 10.1021/acs.nanolett.4c05946

Runlong Rao, Yangyang Shi, Zejing Wang, Shuai Wan, Zhongyang Li

{"title":"On-Chip Cascaded Metasurfaces for Visible Wavelength Division Multiplexing and Color-Routing Meta-Display.","authors":"Runlong Rao, Yangyang Shi, Zejing Wang, Shuai Wan, Zhongyang Li","doi":"10.1021/acs.nanolett.4c05946","DOIUrl":"10.1021/acs.nanolett.4c05946","url":null,"abstract":"Integrating metasurfaces on-chip offers a promising strategy for modulating and extracting guided waves, suggesting tremendous applications in compact wearable devices. However, despite the full acquisition of on-chip manipulation of optical parameters, including phase, amplitude, and polarization, the functionality of on-chip metasurfaces remains limited by the lack of wavelength selectivity. Here, an on-chip approach to differentiate wavelength components is proposed in the visible regime for wavelength division multiplexing (WDM). Through horizontally cascading on-chip meta-atoms with structural dimension variation and optimization, different wavelength components propagating along the waveguide would be selectively extracted, realizing meta-demultiplexing functionality. More intriguingly, color nanoprinting images or holographic displays can be correspondingly enabled. This approach surpasses conventional free-space meta-devices in terms of exhibiting improved wavelength-selective allocation and eliminating the energy waste caused by spatial multiplexing. We envision that such an on-chip cascading strategy paves the way for next-generation WDM devices in photonic integrated circuits and wearable miniature meta-displays.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":" ","pages":"2452-2458"},"PeriodicalIF":9.6,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143062177","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

Electrochemical Removal of Se(IV) from Wastewater Using RuO₂-Based Catalysts.

IF 9.6 1区材料科学

Nano Letters Pub Date : 2025-02-12 Epub Date: 2025-01-30 DOI: 10.1021/acs.nanolett.4c06344

Shaoyun Hao, Yuge Feng, Duo Wang, Jinwon Cho, Chang Qiu, Tae-Ung Wi, Ziang Xu, Zhou Yu, Chase Sellers, Shiqiang Zou, Anubhav Jain, Haotian Wang

{"title":"Electrochemical Removal of Se(IV) from Wastewater Using RuO2-Based Catalysts.","authors":"Shaoyun Hao, Yuge Feng, Duo Wang, Jinwon Cho, Chang Qiu, Tae-Ung Wi, Ziang Xu, Zhou Yu, Chase Sellers, Shiqiang Zou, Anubhav Jain, Haotian Wang","doi":"10.1021/acs.nanolett.4c06344","DOIUrl":"10.1021/acs.nanolett.4c06344","url":null,"abstract":"The removal of selenite (SeO32-) from water is challenging due to the risk of secondary pollutants. To address this, we developed RuO2-based nanocatalysts on the titanium plate (RuO2/TP) for direct electrochemical reduction of Se(IV) to elemental selenium [Se(0)]. Optimizing Sn doping in RuO2 nanoparticles to induce charge redistribution enabled the Ru0.9Sn0.1Ox/TP catalyst to achieve ∼90% Se(IV) removal across concentrations of 0.1, 1, and 10 mM at -2 mA cm-2 over 8 h, outperforming undoped RuO2/TP. Furthermore, Ru0.9Sn0.1Ox/TP also maintained ∼90% removal efficiency in 1 mM of Se(IV) solutions containing competitive anions (0.5 M Cl-, 0.1 M SO42-, 0.01 M NO3-, and their mixtures), demonstrating suitability for complex wastewater treatment. Importantly, the catalysts were recyclable, with no observable contamination introduced into the solution. Density functional theory (DFT) calculations suggest that Sn doping effectively reduces the energy barrier for the reduction of Se(IV) to Se(0).","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":" ","pages":"2547-2553"},"PeriodicalIF":9.6,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143062550","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