Nature Materials最新文献_第10页

Coherent optical spin Hall transport for polaritonics at room temperature 室温下极化子的相干光自旋霍尔传输

IF 37.2 1区材料科学

Nature Materials Pub Date : 2024-10-22 DOI: 10.1038/s41563-024-02028-2

Ying Shi, Yusong Gan, Yuzhong Chen, Yubin Wang, Sanjib Ghosh, Alexey Kavokin, Qihua Xiong

{"title":"Coherent optical spin Hall transport for polaritonics at room temperature","authors":"Ying Shi, Yusong Gan, Yuzhong Chen, Yubin Wang, Sanjib Ghosh, Alexey Kavokin, Qihua Xiong","doi":"10.1038/s41563-024-02028-2","DOIUrl":"10.1038/s41563-024-02028-2","url":null,"abstract":"Spin or valley degrees of freedom hold promise for next-generation spintronics. Nonetheless, the macroscopic coherent spin current formations are still hindered by rapid dephasing due to electron scattering, specifically at room temperature. Exciton polaritons offer excellent platforms for spin-optronic devices via the optical spin Hall effect. However, this effect could neither be unequivocally observed at room temperature nor be exploited for practical spintronic devices due to the presence of strong thermal fluctuations or large linear spin splitting. Here we report the observation of room-temperature optical spin Hall effect of exciton polaritons, with the spin current flow over 60 μm in a formamidinium lead bromide perovskite microcavity. We provide direct evidence of long-range coherence in the flow of polaritons and the spin current carried by them. Leveraging the spin Hall transport of polaritons, we further demonstrate two polaritonic devices, namely, a NOT gate and a spin-polarized beamsplitter, advancing the frontier of room-temperature polaritonics in perovskite microcavities. The optical spin Hall transport of exciton polaritons at room temperature is reported in a perovskite microcavity, which enables them to realize polariton spintronic devices such as a spin-polarized beamsplitter and a polariton spin inverter.","PeriodicalId":19058,"journal":{"name":"Nature Materials","volume":"24 1","pages":"56-62"},"PeriodicalIF":37.2,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142452611","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

Perovskite microcavities spin the light 透镜微腔使光线旋转

IF 37.2 1区材料科学

Nature Materials Pub Date : 2024-10-22 DOI: 10.1038/s41563-024-02012-w

Alberto Amo

引用次数: 0

Colossal room-temperature non-reciprocal Hall effect 巨大的室温非互惠霍尔效应

IF 37.2 1区材料科学

Nature Materials Pub Date : 2024-10-21 DOI: 10.1038/s41563-024-02015-7

Lujin Min, Yang Zhang, Zhijian Xie, Sai Venkata Gayathri Ayyagari, Leixin Miao, Yugo Onishi, Seng Huat Lee, Yu Wang, Nasim Alem, Liang Fu, Zhiqiang Mao

{"title":"Colossal room-temperature non-reciprocal Hall effect","authors":"Lujin Min, Yang Zhang, Zhijian Xie, Sai Venkata Gayathri Ayyagari, Leixin Miao, Yugo Onishi, Seng Huat Lee, Yu Wang, Nasim Alem, Liang Fu, Zhiqiang Mao","doi":"10.1038/s41563-024-02015-7","DOIUrl":"10.1038/s41563-024-02015-7","url":null,"abstract":"Non-reciprocal charge transport has gained significant attention due to its potential in exploring quantum symmetry and its promising applications. Traditionally, non-reciprocal transport has been observed in the longitudinal direction, with non-reciprocal resistance being a small fraction of the ohmic resistance. Here we report a transverse non-reciprocal transport phenomenon featuring a quadratic current–voltage characteristic and divergent non-reciprocity, termed the non-reciprocal Hall effect. This effect is observed in microscale Hall devices fabricated from platinum (Pt) deposited by a focused ion beam on silicon substrates. The transverse non-reciprocal Hall effect arises from the geometrically asymmetric scattering of textured Pt nanoparticles within the focused-ion-beam-deposited Pt structures. Notably, the non-reciprocal Hall effect generated in focused-ion-beam-deposited Pt electrodes can propagate to adjacent conductors such as Au and NbP through Hall current injection. Additionally, this pronounced non-reciprocal Hall effect facilitates broadband frequency mixing. These findings not only validate the non-reciprocal Hall effect concept but also open avenues for its application in terahertz communication, imaging and energy harvesting. Non-reciprocal charge transport has potential for applications but is usually weak. Here the authors report a room-temperature divergent non-reciprocal Hall effect in devices made of Pt deposited on Si substrates.","PeriodicalId":19058,"journal":{"name":"Nature Materials","volume":"23 12","pages":"1671-1677"},"PeriodicalIF":37.2,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142451846","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

Designing flexible mechanical metamaterials with complex functionalities 设计具有复杂功能的柔性机械超材料

IF 37.2 1区材料科学

Nature Materials Pub Date : 2024-10-17 DOI: 10.1038/s41563-024-02022-8

Gary P. T. Choi

引用次数: 0

Substantial oxygen loss and chemical expansion in lithium-rich layered oxides at moderate delithiation 富锂层状氧化物在中度脱锂时的大量氧损耗和化学膨胀

IF 37.2 1区材料科学

Nature Materials Pub Date : 2024-10-17 DOI: 10.1038/s41563-024-02032-6

Peter M. Csernica, Kit McColl, Grace M. Busse, Kipil Lim, Diego F. Rivera, David A. Shapiro, M. Saiful Islam, William C. Chueh

{"title":"Substantial oxygen loss and chemical expansion in lithium-rich layered oxides at moderate delithiation","authors":"Peter M. Csernica, Kit McColl, Grace M. Busse, Kipil Lim, Diego F. Rivera, David A. Shapiro, M. Saiful Islam, William C. Chueh","doi":"10.1038/s41563-024-02032-6","DOIUrl":"10.1038/s41563-024-02032-6","url":null,"abstract":"Delithiation of layered oxide electrodes triggers irreversible oxygen loss, one of the primary degradation modes in lithium-ion batteries. However, the delithiation-dependent mechanisms of oxygen loss remain poorly understood. Here we investigate the oxygen non-stoichiometry in Li1.18–xNi0.21Mn0.53Co0.08O2–δ electrodes as a function of Li content by using cycling protocols with long open-circuit voltage steps at varying states of charge. Surprisingly, we observe substantial oxygen loss even at moderate delithiation, corresponding to 2.5, 4.0 and 7.6 ml O2 per gram of Li1.18–xNi0.21Mn0.53Co0.08O2–δ after resting at upper capacity cut-offs of 135, 200 and 265 mAh g−1 for 100 h. Our observations suggest an intrinsic oxygen instability consistent with predictions of high oxygen activity at intermediate potentials versus Li/Li+. In addition, we observe a large chemical expansion coefficient with respect to oxygen non-stoichiometry, which is about three times greater than those of classical oxygen-deficient materials such as fluorite and perovskite oxides. Our work challenges the conventional wisdom that deep delithiation is a necessary condition for oxygen loss in layered oxide electrodes and highlights the importance of calendar ageing for investigating oxygen stability. Li-rich oxides were found to slowly release considerable quantities of oxygen at varying states of charge. These observations point to the intrinsic instability of oxygen in partially charged oxides and highlight the need for degradation studies.","PeriodicalId":19058,"journal":{"name":"Nature Materials","volume":"24 1","pages":"92-100"},"PeriodicalIF":37.2,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142440844","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

Author Correction: Non-equilibrium pathways to emergent polar supertextures 作者更正：通向新兴极地超纹理的非平衡途径

IF 37.2 1区材料科学

Nature Materials Pub Date : 2024-10-14 DOI: 10.1038/s41563-024-02044-2

Vladimir A. Stoica, Tiannan Yang, Sujit Das, Yue Cao, Huaiyu (Hugo) Wang, Yuya Kubota, Cheng Dai, Hari Padma, Yusuke Sato, Anudeep Mangu, Quynh L. Nguyen, Zhan Zhang, Disha Talreja, Marc E. Zajac, Donald A. Walko, Anthony D. DiChiara, Shigeki Owada, Kohei Miyanishi, Kenji Tamasaku, Takahiro Sato, James M. Glownia, Vincent Esposito, Silke Nelson, Matthias C. Hoffmann, Richard D. Schaller, Aaron M. Lindenberg, Lane W. Martin, Ramamoorthy Ramesh, Iwao Matsuda, Diling Zhu, Long-Q. Chen, Haidan Wen, Venkatraman Gopalan, John W. Freeland

引用次数: 0

Tunable spin–orbit physics in van der Waals heterostructures 范德华异质结构中的可调谐自旋轨道物理学

IF 37.2 1区材料科学

Nature Materials Pub Date : 2024-10-09 DOI: 10.1038/s41563-024-02018-4

Mikhail I. Katsnelson

引用次数: 0

Jamming of nephron-forming niches in the developing mouse kidney creates cyclical mechanical stresses 发育中的小鼠肾脏中肾小球形成龛位的干扰会产生周期性机械应力

IF 37.2 1区材料科学

Nature Materials Pub Date : 2024-10-09 DOI: 10.1038/s41563-024-02019-3

Louis S. Prahl, Jiageng Liu, John M. Viola, Aria Zheyuan Huang, Trevor J. Chan, Gabriela Hayward-Lara, Catherine M. Porter, Chenjun Shi, Jitao Zhang, Alex J. Hughes

{"title":"Jamming of nephron-forming niches in the developing mouse kidney creates cyclical mechanical stresses","authors":"Louis S. Prahl, Jiageng Liu, John M. Viola, Aria Zheyuan Huang, Trevor J. Chan, Gabriela Hayward-Lara, Catherine M. Porter, Chenjun Shi, Jitao Zhang, Alex J. Hughes","doi":"10.1038/s41563-024-02019-3","DOIUrl":"10.1038/s41563-024-02019-3","url":null,"abstract":"Urinary collecting tubules form during kidney embryogenesis through the branching of the ureteric bud epithelium. A travelling mesenchyme niche of nephron progenitor cells caps each branching ureteric bud tip. These ‘tip domain’ niches pack more closely over developmental time and their number relates to nephron endowment at birth. Yet, how the crowded tissue environment impacts niche number and cell decision-making remains unclear. Here, through experiments and mathematical modelling, we show that niche packing conforms to physical limitations imposed by kidney curvature. We relate packing geometries to rigidity theory to predict a stiffening transition starting at embryonic day 15 in the mouse, validated by micromechanical analysis. Using a method to estimate tip domain ‘ages’ relative to their most recent branch events, we find that new niches overcome mechanical resistance as they branch and displace neighbours. This creates rhythmic mechanical stress in the niche. These findings expand our understanding of kidney development and inform engineering strategies for synthetic regenerative tissues. Geometric packing of tubules in the developing kidney urinary collecting system leads to tissue stiffening and rhythmic mechanical stresses local to nephron-forming niches that synchronize with tubule branching.","PeriodicalId":19058,"journal":{"name":"Nature Materials","volume":"23 11","pages":"1582-1591"},"PeriodicalIF":37.2,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142385133","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

Publisher Correction: Helical peptide structure improves conductivity and stability of solid electrolytes 出版商更正：螺旋肽结构提高了固体电解质的导电性和稳定性

IF 37.2 1区材料科学

Nature Materials Pub Date : 2024-10-07 DOI: 10.1038/s41563-024-02040-6

Yingying Chen, Tianrui Xue, Chen Chen, Seongon Jang, Paul V. Braun, Jianjun Cheng, Christopher M. Evans

引用次数: 0

Reaction-driven restructuring of defective PtSe2 into ultrastable catalyst for the oxygen reduction reaction 反应驱动缺陷硒化铂重组为超稳定氧还原反应催化剂

IF 37.2 1区材料科学

Nature Materials Pub Date : 2024-10-07 DOI: 10.1038/s41563-024-02020-w

Wenhan Niu, Srimanta Pakhira, Guangming Cheng, Fang Zhao, Nan Yao, Jose L. Mendoza-Cortes, Bruce E. Koel

{"title":"Reaction-driven restructuring of defective PtSe2 into ultrastable catalyst for the oxygen reduction reaction","authors":"Wenhan Niu, Srimanta Pakhira, Guangming Cheng, Fang Zhao, Nan Yao, Jose L. Mendoza-Cortes, Bruce E. Koel","doi":"10.1038/s41563-024-02020-w","DOIUrl":"10.1038/s41563-024-02020-w","url":null,"abstract":"PtM (M = S, Se, Te) dichalcogenides are promising two-dimensional materials for electronics, optoelectronics and gas sensors due to their high air stability, tunable bandgap and high carrier mobility. However, their potential as electrocatalysts for the oxygen reduction reaction (ORR) is often underestimated due to their semiconducting properties and limited surface area from van der Waals stacking. Here we show an approach for synthesizing a highly efficient and stable ORR catalyst by restructuring defective platinum diselenide (DEF-PtSe2) through electrochemical cycling in an O2-saturated electrolyte. After 42,000 cycles, DEF-PtSe2 exhibited 1.3 times higher specific activity and 2.6 times higher mass activity compared with a commercial Pt/C electrocatalyst. Even after 126,000 cycles, it maintained superior ORR performance with minimal decay. Quantum mechanical calculations using hybrid density functional theory reveal that the improved performance is due to the synergistic contributions from Pt nanoparticles and the apical active sites on the DEF-PtSe2 surface. This work highlights the potential of DEF-PtSe2 as a durable electrocatalyst for ORR, offering insights into PtM dichalcogenide electrochemistry and the design of advanced catalysts. Defective platinum diselenide can serve as a highly efficient and stable catalyst for the oxygen reduction reaction outperforming commercial Pt/C catalysts, which is achieved by a restructuring approach via electrochemical cycling.","PeriodicalId":19058,"journal":{"name":"Nature Materials","volume":"23 12","pages":"1704-1711"},"PeriodicalIF":37.2,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142383656","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