Nano Letters最新文献_第5页

Competing Ferroelectric Polarization and Defect Migration Induced Resistive Switching in β′-In2Se3

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-02-10 DOI: 10.1021/acs.nanolett.4c06314

Yinfeng Long, Saiyu Bu, Han Chen, Kai Liu, Xin Zhou, Shiyu Zhang, Xiaotian Zhang, Teng Zhang, Changxin Chen, Wugang Liao, Kian Ping Loh, Lin Wang

{"title":"Competing Ferroelectric Polarization and Defect Migration Induced Resistive Switching in β′-In2Se3","authors":"Yinfeng Long, Saiyu Bu, Han Chen, Kai Liu, Xin Zhou, Shiyu Zhang, Xiaotian Zhang, Teng Zhang, Changxin Chen, Wugang Liao, Kian Ping Loh, Lin Wang","doi":"10.1021/acs.nanolett.4c06314","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c06314","url":null,"abstract":"Layered β′-In2Se3 has garnered significant attention due to its intriguing multiferroic properties. Until now, most studies have focused on a material-level understanding, with limited exploration of device-level properties. This work systematically investigates the in-plane resistive switching behavior of β′-In2Se3. Besides resistive switching resulting from ferroelectric polarization reversal, the critical role of defect migration is unveiled in determining the overall electrical characteristics of β′-In2Se3 devices. Specifically, we elucidate the contribution of electric-field-induced Se vacancy migration to resistive switching through time-dependent current evolution, in situ electric force microscopy, and density functional theory calculations. By considering the interplay between free carriers, bound charges, and mobile defects, a comprehensive physical picture of the complex resistive switching behavior of β′-In2Se3 devices is established. This work provides crucial insights into understanding and manipulating the resistive switching behavior of 2D vdW ferroelectric devices.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"169 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143385289","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

Crystallinity of Cerium Oxide Dictates Reactivity of Platinum Catalysts

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-02-10 DOI: 10.1021/acs.nanolett.5c00189

Nan Zhang, Jiankang Zhao, Jie Wei, Hongliang Li, Wenlong Wu, Xu Li, Jingyue Liu, Jie Zeng

{"title":"Crystallinity of Cerium Oxide Dictates Reactivity of Platinum Catalysts","authors":"Nan Zhang, Jiankang Zhao, Jie Wei, Hongliang Li, Wenlong Wu, Xu Li, Jingyue Liu, Jie Zeng","doi":"10.1021/acs.nanolett.5c00189","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c00189","url":null,"abstract":"The reactivity of supported metal catalysts can be influenced by the nature of supports, which synergistically activate reactant molecules with metal sites. The investigation of the crystalline effect of CeO2 remains unclear because of the easy formation of fluorite-structure CeO2. Here, we successfully synthesized CeOx clusters with distinct crystallinity and established that the crystalline nature of CeOx clusters dictates the reactivity of the Pt/CeOx catalysts for CO oxidation. Specifically, Pt clusters supported on crystalline CeOx exhibited a specific CO conversion rate approximately 15-fold higher than those on amorphous CeOx at temperatures of 120 to 140 °C. Detailed experimental investigations and simulations revealed that the enhanced CO oxidation reactivity originates from the higher mobility of lattice oxygen and more labile oxygen species on crystalline CeOx nanoclusters. This work deepens our understanding of crystallinity-dependent redox properties of nanoscale oxide supports and opens new routes for designing better metal catalysts for targeted reactions.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"51 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143375773","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

Revisiting the Interface Dynamics of MXene/Rubber Elastomers: Multiscale Mechanistic Insights into Collaborative Bonding for Robust Self-Healing Sensors

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-02-10 DOI: 10.1021/acs.nanolett.4c04547

Lixian Song, Dong Liu, Huan Zhang, Yang Wang, Bo Zhao, Wenbin Kang, Yutian Zhu, Yanying Wei, Yingze Song

{"title":"Revisiting the Interface Dynamics of MXene/Rubber Elastomers: Multiscale Mechanistic Insights into Collaborative Bonding for Robust Self-Healing Sensors","authors":"Lixian Song, Dong Liu, Huan Zhang, Yang Wang, Bo Zhao, Wenbin Kang, Yutian Zhu, Yanying Wei, Yingze Song","doi":"10.1021/acs.nanolett.4c04547","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c04547","url":null,"abstract":"Sophisticated flexible strain sensors based on MXene/rubber with self-healing capabilities are poised to transform future deformable electronics by restoring impaired performance after repeated deformation. Despite their potential, integrating excellent self-healing properties with superior mechanical strength in a single system remains a significant challenge due to simplistic interface architectures with weak bonds and limited understanding of MXene/rubber interface dynamics. To address this, a novel metal coordination bonding scheme has been developed, synergizing with dynamic hydrogen bonding to enhance interface bonding strength, enabling both outstanding mechanical and self-healing properties. Using in situ synchrotron radiation techniques, a multiscale investigation of MXene/rubber interface dynamics provides valuable insights, linking bonding strength to mechanical performance. These findings not only deepen our understanding of interface evolution in deformable electrodes but also offer a promising path for designing advanced self-healable strain sensors with superior mechanical properties.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"134 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143375637","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

Theory of Thermopolarization Effect

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-02-10 DOI: 10.1021/acs.nanolett.4c05870

Yugo Onishi, Hiroki Isobe, Atsuo Shitade, Naoto Nagaosa

引用次数: 0

Connection Length Controlled Sound Speed and Thermal Conductivity of Hybrid Metalcone Films

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-02-10 DOI: 10.1021/acs.nanolett.4c03741

Md Shafkat Bin Hoque, Rachel A. Nye, Saman Zare, Stephanie Atkinson, Siyao Wang, Andrew H. Jones, John T. Gaskins, Gregory N. Parsons, Patrick E. Hopkins

引用次数: 0

A Green-Modification Strategy for High-Performance Bamboo-Based Composites via Persimmon Lacquer and Iron Ion Complexation

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-02-10 DOI: 10.1021/acs.nanolett.4c04936

Xiaoyan Li, Wencheng Lei, Fei Rao, Yongjie Bao, Shoujun Liao, Yuyue Zhang, Neng Li, Yahui Zhang, Yuhe Chen

{"title":"A Green-Modification Strategy for High-Performance Bamboo-Based Composites via Persimmon Lacquer and Iron Ion Complexation","authors":"Xiaoyan Li, Wencheng Lei, Fei Rao, Yongjie Bao, Shoujun Liao, Yuyue Zhang, Neng Li, Yahui Zhang, Yuhe Chen","doi":"10.1021/acs.nanolett.4c04936","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c04936","url":null,"abstract":"Natural bamboo-based fiber composites offer unique advantages in terms of renewability and eco-friendliness. However, challenges such as dimensional stability in outdoor applications must be addressed. This study reports a straightforward method to impregnate oriented bamboo fiber mats with natural persimmon lacquer and ferrous sulfate to fabricate bamboo scrimber composite. The tannic acid from the persimmon lacquer formed complexes with iron ions, enhancing the water resistance of the bamboo scrimber composite, though slightly negatively impacting its mechanical properties. These complexes promoted a denser carbon structure, and the resulting metal oxides act as smoke inhibitors, reducing the total smoke production rate by 62.43%. Furthermore, the bamboo scrimber composite exhibited excellent mildew resistance, hydrophobicity, and color stability, making it suitable for outdoor flooring and furniture applications. The findings provide a green processing strategy to prepare high-performance bamboo-based fiber composites for outdoor construction and furniture use.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"41 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143385287","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

Emergent Magnetic Skyrmions in a Topological Weyl Nodal Ring Semimetal

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-02-10 DOI: 10.1021/acs.nanolett.4c06259

Hang Li, Bei Ding, Feng Zhou, Jie Chen, Linxuan Song, Wenyun Yang, Yong-Chang Lau, Jinbo Yang, Yue Li, Yong Jiang, Wenhong Wang

{"title":"Emergent Magnetic Skyrmions in a Topological Weyl Nodal Ring Semimetal","authors":"Hang Li, Bei Ding, Feng Zhou, Jie Chen, Linxuan Song, Wenyun Yang, Yong-Chang Lau, Jinbo Yang, Yue Li, Yong Jiang, Wenhong Wang","doi":"10.1021/acs.nanolett.4c06259","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c06259","url":null,"abstract":"Topological magnetic materials are expected to show multiple transport responses because of their unusual bulk electronic topology in momentum space and their topological spin texture in real space. However, such multiple topological properties-hosting materials are rare in nature. In this work, we unambiguously reveal the emergence of magnetic skyrmions in Mn5Ge3 single crystal through detailed electrical transport and Lorentz transmission electron microscopy (L-TEM) combined with ab initio calculations. We demonstrate that Mn5Ge3 is a topological ferromagnet with multiple nodal rings in its electronic structure. Importantly, L-TEM experiments further reveal that the magnetic skyrmions appear in the (001) plane when an appropriate magnetic field is applied along the [001] direction. Skyrmion-induced topological Hall resistivity as large as ∼972 nΩ cm is also observed over a wide temperature-magnetic field region. These prove Mn5Ge3 as a rare magnetic topological nodal-ring semimetal with great significance to explore novel topological multifunctionality, which facilitate the development of spintronics.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"162 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143375636","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

Lensless Polarimetric Imaging and Encryption Enabled by Te/ReSe2 van der Waals Heterostructure Polarization-Sensitive Photodetector

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-02-10 DOI: 10.1021/acs.nanolett.4c06629

Meifei Chen, Ziqiao Wu, Zhanxiong Qiu, Junhao Peng, Wei Gao, Mengmeng Yang, Le Huang, Jiandong Yao, Yu Zhao, Zhaoqiang Zheng, Yao Ni, Jingbo Li

{"title":"Lensless Polarimetric Imaging and Encryption Enabled by Te/ReSe2 van der Waals Heterostructure Polarization-Sensitive Photodetector","authors":"Meifei Chen, Ziqiao Wu, Zhanxiong Qiu, Junhao Peng, Wei Gao, Mengmeng Yang, Le Huang, Jiandong Yao, Yu Zhao, Zhaoqiang Zheng, Yao Ni, Jingbo Li","doi":"10.1021/acs.nanolett.4c06629","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c06629","url":null,"abstract":"Polarimetric imaging and encryption improve target recognition precision and information security, enhancing image sensors’ perceptual acuity and interference resilience. However, the miniaturization of sensing systems faces challenges due to the complex integration of dispersive optical components such as polarizers. To address this, we propose a polarization-sensitive photodetector using a Te/ReSe2 van der Waals heterostructure. This design leverages type-II band alignment for efficient photocarrier segregation. The anisotropic crystal orientations of ReSe2 and Te layers integrate photon absorption with photocarrier extraction, boosting the functionality. The Te/ReSe2 device offers a broad spectral photoresponse (300–965 nm), a high polarization ratio of 8.9, and a fast response time of 55.4/55.7 μs at 635 nm. These properties enable high-resolution polarimetric imaging and precise image processing. This study provides a blueprint for developing miniaturized polarization-sensitive photodetectors and advancing lensless polarimetric optoelectronics.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"13 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143375635","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

Engineering Titanium Dioxide/Titanocene-Polysulfide Interface for Flexible, Optical-Modulated, and Thermal-Tolerant Multilevel Memristor 用于柔性、光学调制和耐热多级晶闸管的二氧化钛/二茂钛-多硫化物工程界面

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-02-07 DOI: 10.1021/acs.nanolett.4c05786

Panke Zhou, Xi Lin, Yiqun Gao, Xiaoli Lin, Tao Zeng, Haohong Li, Xiong Chen, Huidong Zheng

{"title":"Engineering Titanium Dioxide/Titanocene-Polysulfide Interface for Flexible, Optical-Modulated, and Thermal-Tolerant Multilevel Memristor","authors":"Panke Zhou, Xi Lin, Yiqun Gao, Xiaoli Lin, Tao Zeng, Haohong Li, Xiong Chen, Huidong Zheng","doi":"10.1021/acs.nanolett.4c05786","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c05786","url":null,"abstract":"Multifunctional memristors with a high memory density, low power consumption, flexibility, programmability, and environmental robustness are essential for next-generation memories. In this work, a titanocene-polysulfide complex (Cp2TiS5) with strong S···S interactions and hydrogen bonds was synthesized and integrated with TiO2 to create a novel Cu/TiO2/Cp2TiS5/Ag memristor. This device shows bipolar nonvolatile memory performance with a remarkable ON/OFF ratio (104.8), low switching voltages (VSET, −0.16 V; VRESET, +0.15 V), and low power consumption (2.7 × 10–4 μW). It exhibits multilevel memory behavior, flexibility, optical modulation (VSET decreases from −1.35 to −0.17 V with decreasing irradiation wavelength), and thermal tolerance (up to 200 °C). The electron-rich Cp2TiS5 layer protects the Ag-CFs, while TiO2’s oxygen vacancies and unsaturated Ti atoms interact with sulfur from Cp2TiS5, lowering the Schottky barrier and facilitating charge transport. This work offers promising opportunities in flexible memristive devices for neuromorphic computing under extreme conditions.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"64 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143367425","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

Light Weight Organic Composites with High Thermal Management Capability

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-02-07 DOI: 10.1021/acs.nanolett.4c04601

Yingying Guo, Kang Xu, Yandong Wang, Zhenbang Zhang, Ping Gong, Jianxiang Zhang, Linhong Li, Rongjie Yang, Yue Qin, Xingye Wang, Boda Zhu, Tao Cai, Cheng-Te Lin, Kazuhito Nishimura, Maohua Li, Nan Jiang, Jinhong Yu

引用次数: 0