Materials Horizons最新文献_第4页

Tuning Rashba–Dresselhaus effect with ferroelectric polarization at asymmetric heterostructural interface† 在非对称异质结构界面上用铁电极化调节Rashba-Dresselhaus效应。

IF 13.3 2区材料科学

Materials Horizons Pub Date : 2023-10-24 DOI: 10.1039/D3MH00635B

Bangmin Zhang, Chunhua Tang, Ping Yang and Jingsheng Chen

{"title":"Tuning Rashba–Dresselhaus effect with ferroelectric polarization at asymmetric heterostructural interface†","authors":"Bangmin Zhang, Chunhua Tang, Ping Yang and Jingsheng Chen","doi":"10.1039/D3MH00635B","DOIUrl":"10.1039/D3MH00635B","url":null,"abstract":"The spin–orbit interaction (SOI) plays an essential role in materials properties, and controlling its intensity has great potential in the design of materials. In this work, asymmetric [(La0.7Sr0.3MnO3)8/(BaTiO3)t/(SrTiO3)2]8 superlattices were fabricated on (001) SrTiO3 substrate with SrO or TiO2 termination, labelled as SrO-SL and TiO2-SL, respectively. The in-plane angular magnetoresistance of the superlattices shows a combination of two- and four-fold symmetry components. The coefficient of two-fold symmetry component has opposite sign with current I along [100] and [110] directions for TiO2-SL, while it has the same sign for SrO-SL. Detailed study shows that the asymmetric cation inter-mixing and ferroelectricity-modulated electronic charge transfer induce asymmetric electronic potential for SrO-SL with dominating Rashba SOI, and symmetric electronic potential for TiO2-SL with dominating Dresselhaus SOI induced by BaTiO3. This work shows that the Rashba and Dresselhaus SOIs are sensitive to the ferroelectric polarization in the asymmetric structure.","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" 1","pages":" 262-270"},"PeriodicalIF":13.3,"publicationDate":"2023-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71475597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Mechanochromic and ionic conductive cholesteric liquid crystal elastomers for biomechanical monitoring and human–machine interaction† 用于生物力学监测和人机交互的机械变色和离子导电胆甾醇液晶弹性体。

IF 13.3 2区材料科学

Materials Horizons Pub Date : 2023-10-20 DOI: 10.1039/D3MH01386C

Jiazhe Ma, Yanzhao Yang, Xuan Zhang, Pan Xue, Cristian Valenzuela, Yuan Liu, Ling Wang and Wei Feng

{"title":"Mechanochromic and ionic conductive cholesteric liquid crystal elastomers for biomechanical monitoring and human–machine interaction†","authors":"Jiazhe Ma, Yanzhao Yang, Xuan Zhang, Pan Xue, Cristian Valenzuela, Yuan Liu, Ling Wang and Wei Feng","doi":"10.1039/D3MH01386C","DOIUrl":"10.1039/D3MH01386C","url":null,"abstract":"Cholesteric liquid crystal elastomers (CLCEs) that combine rubbery elasticity with structural colour from self-assembled helical nanostructures are of paramount importance for diverse applications such as biomimetic skins, adaptive optics and soft robotics. Despite great advances, it is challenging to integrate electrical sensing and colour-changing characteristics in a single CLCE system. Here, we report the design and synthesis of an ionic conductive cholesteric liquid crystal elastomer (iCLCE) through in situ Michael addition and free-radical photopolymerization of CLCE precursors on silane-functionalized polymer ionic liquid networks, in which robust covalent chemical bonding was formed at the interface. Thanks to superior mechanochromism and ionic conductivity, the resulting iCLCEs exhibit dynamic colour-changing and electrical sensing functions in a wide range upon mechanical stretching, and can be used for biomechanical monitoring during joint bending. Importantly, a capacitive elastomeric sensor can be constructed through facilely stacking iCLCEs, where the optical and electrical dual-signal reporting performance allows intuitive visual localization of pressure intensity and distribution. Moreover, proof-of-concept application of the iCLCEs has been demonstrated with human-interactive systems. The research disclosed herein can provide new insights into the development of bioinspired somatosensory materials for emerging applications in diverse fields such as human–machine interaction, prostheses and intelligent robots.","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" 1","pages":" 217-226"},"PeriodicalIF":13.3,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71409666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Contact efficiency optimization for tribovoltaic nanogenerators† 摩擦光伏纳米发电机的接触效率优化。

IF 13.3 2区材料科学

Materials Horizons Pub Date : 2023-10-19 DOI: 10.1039/D3MH01369C

Zhihao Zhao, Jiayue Zhang, Wenyan Qiao, Linglin Zhou, Ziting Guo, Xinyuan Li, Zhong Lin Wang and Jie Wang

{"title":"Contact efficiency optimization for tribovoltaic nanogenerators†","authors":"Zhihao Zhao, Jiayue Zhang, Wenyan Qiao, Linglin Zhou, Ziting Guo, Xinyuan Li, Zhong Lin Wang and Jie Wang","doi":"10.1039/D3MH01369C","DOIUrl":"10.1039/D3MH01369C","url":null,"abstract":"Energy harvesters based on the tribovoltaic effect that can convert mechanical energy into electricity offer a potential solution for the energy supply of decentralized sensors. However, a substantial disparity in output current, exceeding 106 times, exists between micro- and macro-contact tribovoltaic nanogenerators (TVNGs). To tackle this challenge, we develop a quantification method to determine the effective contact efficiency of conventional large-scale TVNGs, revealing a mere 0.038% for a TVNG of 1 cm2. Thus, we implement an optimization strategy by contact interface design resulting in a remarkable 65-fold increase in effective contact efficiency, reaching 2.45%. This enhancement leads to a current density of 23 A m−2 and a record-high charge density of 660 mC m−2 for the TVNG based on Cu and p-type silicon. Our study reveals that increasing the effective contact efficiency will not only address the existing disparities but also have the potential to significantly enhance the output current in future advancements of large-scale TVNGs.","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" 12","pages":" 5962-5968"},"PeriodicalIF":13.3,"publicationDate":"2023-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2023/mh/d3mh01369c?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54227025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A macroporous carbon nanoframe for hosting Mott–Schottky Fe–Co/Mo2C sites as an outstanding bi-functional oxygen electrocatalyst† 一种大孔碳纳米框架，用于承载Mott-Schottky Fe-Co/Mo2C位点，作为一种出色的双功能氧电催化剂。

IF 13.3 2区材料科学

Materials Horizons Pub Date : 2023-10-18 DOI: 10.1039/D3MH01237A

Jie Hong, Lei Zhang, Qiliang Zhu, Ziang Du, Yingtang Zhou, Thomas Wågberg and Guangzhi Hu

{"title":"A macroporous carbon nanoframe for hosting Mott–Schottky Fe–Co/Mo2C sites as an outstanding bi-functional oxygen electrocatalyst†","authors":"Jie Hong, Lei Zhang, Qiliang Zhu, Ziang Du, Yingtang Zhou, Thomas Wågberg and Guangzhi Hu","doi":"10.1039/D3MH01237A","DOIUrl":"10.1039/D3MH01237A","url":null,"abstract":"Simultaneously optimizing the d-band center of the catalyst and the mass/charge transport processes during the oxygen catalytic reaction is an essential but arduous task in the pursuit of creating effective and long-lasting bifunctional oxygen catalysts. In this study, a Fe–Co/Mo2C@N-doped carbon macroporous nanoframe was successfully synthesized via a facile “conformal coating and coordination capture” pyrolysis strategy. As expected, the resulting heterogeneous electrocatalyst exhibited excellent reversible oxygen electrocatalytic performance in an alkaline medium, as demonstrated by the small potential gap of 0.635 V between the operating potential of 1.507 V at 10 mA cm−2 for the oxygen evolution reaction and the half-wave potential of 0.872 V towards the oxygen reduction reaction. Additionally, the developed Zn–air battery employing the macroporous nanoframe heterostructure displayed an impressive peak power density of 218 mW cm−2, a noteworthy specific capacity of 694 mA h gZn−1, and remarkable charging/discharging cycle durability. Theoretical calculations confirmed that the built-in electric field between the Fe–Co alloy and Mo2C semiconductor could induce advantageous charge transport and redistribution at the heterointerface, contributing to the optimization of the d-band center of the nanohybrid and ultimately leading to a reduction in the reaction energy barrier during catalytic processes. The exquisite macroporous nanoframe facilitated the rapid transport of ions and charges, as well as the smooth access of oxygen to the internal active site. Thus, the presented unique electronic structure regulation and macroporous structure design show promising potential for the development of robust bifunctional oxygen electrodes.","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" 12","pages":" 5969-5982"},"PeriodicalIF":13.3,"publicationDate":"2023-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54227023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Retraction: Progressive p-channel vertical transistors fabricated using electrodeposited copper oxide designed with grain boundary tunability 收缩：使用具有晶界可调性的电沉积氧化铜制造的渐进p沟道垂直晶体管。

IF 13.3 2区材料科学

Materials Horizons Pub Date : 2023-10-18 DOI: 10.1039/D3MH90059B

Sung Hyeon Jung, Ji Sook Yang, Young Been Kim, Nishad G. Deshpande, Dong Su Kim, Ji Hoon Choi, Hee Won Suh, Hak Hyeon Lee and Hyung Koun Cho

引用次数: 0

Interactive deformable electroluminescent devices enabled by an adaptable hydrogel system with optical/photothermal/mechanical tunability† 通过具有光学/光热/机械可调谐性的适应性水凝胶系统实现的交互式可变形电致发光器件。

IF 13.3 2区材料科学

Materials Horizons Pub Date : 2023-10-18 DOI: 10.1039/D3MH01412F

Zaili Hou, Songshan Zeng, Kuangyu Shen, Patrick R. Healey, Holly J. Schipper, Luqi Zhang, Miranda Zhang, Michael D. Jones and Luyi Sun

{"title":"Interactive deformable electroluminescent devices enabled by an adaptable hydrogel system with optical/photothermal/mechanical tunability†","authors":"Zaili Hou, Songshan Zeng, Kuangyu Shen, Patrick R. Healey, Holly J. Schipper, Luqi Zhang, Miranda Zhang, Michael D. Jones and Luyi Sun","doi":"10.1039/D3MH01412F","DOIUrl":"10.1039/D3MH01412F","url":null,"abstract":"Deformable electroluminescent devices (DELDs) with mechanical adaptability are promising for new applications in smart soft electronics. However, current DELDs still present some limitations, including having stimuli-insensitive electroluminescence (EL), untunable mechanical properties, and a lack of versatile stimuli response properties. Herein, a facile approach for fabricating in situ interactive and multi-stimuli responsive DELDs with optical/photothermal/mechanical tunability was proposed. A polyvinyl alcohol (PVA)/polydopamine (PDA)/graphene oxide (GO) adaptable hydrogel exhibiting optical/photothermal/mechanical tunability was used as the top ionic conductor (TIC). The TIC can transform from a viscoelastic state to an elastic state via a special freezing-salting out-rehydration (FSR) process. Meanwhile, it endows the DELDs with a photothermal response and thickness-dependent light shielding properties, allowing them to dynamically demonstrate “on” or “off” or “gradually change” EL response to various mechanical/photothermal stimuli. Thereafter, the DELDs with a viscoelastic TIC can be utilized as pressure-responsive EL devices and laser-engravable EL devices. The DELDs with an elastic TIC can withstand both linear and out-of-plane deformation, enabling the designs of various interactive EL devices/sensors to monitor linear sliders, human finger bending, and pneumatically controllable bulging. This work offers new opportunities for developing next-generation EL-responsive devices with widespread application based on adaptable hydrogel systems.","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" 12","pages":" 5931-5941"},"PeriodicalIF":13.3,"publicationDate":"2023-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49687726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Retraction: Ambipolar operation of progressively designed symmetric bidirectional transistors fabricated using single-channel vertical transistor and electrochemically prepared copper oxide 缩回：使用单沟道垂直晶体管和电化学制备的氧化铜制造的渐进设计的对称双向晶体管的双极性操作。

IF 13.3 2区材料科学

Materials Horizons Pub Date : 2023-10-18 DOI: 10.1039/D3MH90060F

Sung Hyeon Jung, Ji Sook Yang and Hyung Koun Cho

引用次数: 0

Anomalous thermal activation of green upconversion luminescence in Yb/Er/ZnGdO self-assembled microflowers for high-sensitivity temperature detection† Yb/Er/ZnGdO自组装微池中绿色上转换发光的异常热激活用于高灵敏度温度检测。

IF 13.3 2区材料科学

Materials Horizons Pub Date : 2023-10-18 DOI: 10.1039/D3MH01360J

Wei Zheng, Aifeng He, Hong Ma, Jianhua Chen, Bo Jing, Yan Li, Xiaogang Yu, Chunqiang Cao and Baoyu Sun

{"title":"Anomalous thermal activation of green upconversion luminescence in Yb/Er/ZnGdO self-assembled microflowers for high-sensitivity temperature detection†","authors":"Wei Zheng, Aifeng He, Hong Ma, Jianhua Chen, Bo Jing, Yan Li, Xiaogang Yu, Chunqiang Cao and Baoyu Sun","doi":"10.1039/D3MH01360J","DOIUrl":"10.1039/D3MH01360J","url":null,"abstract":"Non-contact optical temperature detection has shown a great promise in biological systems and microfluidics because of its outstanding spatial resolution, superior accuracy, and non-invasive nature. However, the thermal quenching of photoluminescence significantly hinders the practical applications of optical temperature probes. Herein, we report thermally enhanced green upconversion luminescence in Yb/Er/ZnGdO microflowers by a defect-assisted thermal distribution mechanism. A 1.6-fold enhancement in green emission was demonstrated as the temperature increased from 298 K to 558 K. Experimental results and dynamic analysis demonstrated that this behavior of thermally activating green upconversion luminescence originates from the emission loss compensation, which is attributed to thermally-induced energy transfer from defect levels to the green emitting level. In addition, the Yb/Er/ZnGdO microflowers can act as self-referenced radiometric optical thermometers. The ultrahigh absolute sensitivity of 1.61% K−1 and an excellent relative sensitivity of 15.5% K−1 based on the 4F9/2/2H11/2(2) level pair were synchronously achieved at room temperature. These findings provide a novel strategy for surmounting the thermal quenching luminescence, thereby greatly promoting the application of non-contact sensitive radiometric thermometers.","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" 1","pages":" 227-237"},"PeriodicalIF":13.3,"publicationDate":"2023-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71409763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Boosting the output performance of triboelectric nanogenerators via surface engineering and structure designing 通过表面工程和结构设计提高摩擦电纳米发电机的输出性能。

IF 13.3 2区材料科学

Materials Horizons Pub Date : 2023-10-17 DOI: 10.1039/D3MH00614J

Lingang Wu, Pan Xue, Shize Fang, Meng Gao, Xiaojie Yan, Hong Jiang, Yang Liu, Huihui Wang, Hongbin Liu and Bowen Cheng

引用次数: 0

Capping layer enabled controlled fragmentation of two-dimensional materials by cold drawing† 覆盖层可以通过冷拉控制二维材料的碎片。

IF 13.3 2区材料科学

Materials Horizons Pub Date : 2023-10-17 DOI: 10.1039/D3MH00762F

Ming Chen, Dong Li, Yuxin Hou, Mengxi Gu, Qingsheng Zeng, De Ning, Weimin Li, Xue Zheng, Yan Shao, Zhixun Wang, Juan Xia, Chunlei Yang, Lei Wei and Huajian Gao

{"title":"Capping layer enabled controlled fragmentation of two-dimensional materials by cold drawing†","authors":"Ming Chen, Dong Li, Yuxin Hou, Mengxi Gu, Qingsheng Zeng, De Ning, Weimin Li, Xue Zheng, Yan Shao, Zhixun Wang, Juan Xia, Chunlei Yang, Lei Wei and Huajian Gao","doi":"10.1039/D3MH00762F","DOIUrl":"10.1039/D3MH00762F","url":null,"abstract":"Cold drawing, a well-established processing technique in the polymer industry, was recently revisited and discovered as an efficient material structuring method to create ordered patterns in composites consisting of both cold-drawable polymers and brittle target materials. Such a high-yield and low-cost manufacturing technique enables the large-scale fabrication of micro-ribbon structures for a wide range of functional materials, including two-dimensional (2D) layered materials. Compared to the abundant phenomenological results from experiments, however, the underlying mechanisms of this technique are not fully explored. Here, supported by experimental investigation, finite element calculations, and theoretical modeling, we systematically study the effect of a capping layer on the controlled fragmentation of 2D materials deposited on polymer substrates during the cold drawing. The capping layer is found to prevent the premature fracture of the 2D thin films during elastic deformation of the substrate, when a specific requirement proposed by the theoretical model is satisfied. Controlled fragmentation is enabled in the necking stage due to the protective effect of the capping layer, which also influences the size of the resulting fragments. Flexible and stretchable electrodes based on 2D material ribbons are fabricated to demonstrate the effectiveness of the proposed roadmap. This study gives an accurate understanding of interactions between 2D materials, polymer substrates, and capping layers during cold drawing, and offers guidance for potential applications such as flexible electronics.","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" 12","pages":" 5859-5868"},"PeriodicalIF":13.3,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49671774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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