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Water-soluble hexagonal BaAl2O4 as sacrificial layer for freestanding crystalline membranes and flexible devices. 水溶性六方BaAl2O4作为独立晶体膜和柔性器件的牺牲层。
IF 41.2 1区 材料科学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2026-01-29 DOI: 10.1038/s41563-026-02486-w
Mengcheng Li,Chao Lu,Yuqian Wang,Haoyang Cheng,Jinling Zhou,Jiachang Bi,Lei Gao,Qinghua Zhang,Nan Liu,Pengyu Liu,Lu Wang,Caiyong Li,Jiayi Song,Xiangyu Lyu,Mingtong Zhu,Jin Liu,Faran Zhou,Ailing Ji,Jimin Zhao,Peng Jiang,Na Li,Liang Si,Yanwei Cao,Peigang Li,Lin Gu,Pu Yu,Guangyu Zhang,Zexian Cao,Nianpeng Lu
Freestanding functional membranes open a promising avenue to the fabrication of flexible electronic devices. To date, research has mainly focused on perovskite-like oxides with pseudocubic structures. Investigation of freestanding hexagonal oxide materials is severely restricted due to the lack of a proper sacrificial layer. Here we present our discovery of water-soluble crystalline hexagonal BaAl2O4, which can serve as an excellent sacrificial layer for obtaining membranes with six-fold or three-fold symmetry. Remarkably, BaAl2O4 can rapidly dissolve in water (<1 min), but is stable in air, O2 and NH3, even at very high temperatures, thus allowing in situ or ex situ growth of high-quality materials for integrated devices. To demonstrate the generic nature of this sacrificial layer, we tested a large collection of oxide and nitride films, including YMnO3 (0001), LiCoO2 (0001), α-Fe2O3 (0001), In2O3 (111), NiO (111), β-Ga2O3 ( 2 ¯ 01 ) and TiN (111). Furthermore, integrated devices based on such crystalline membranes demonstrate a substantially improved performance.
独立式功能膜为柔性电子器件的制造开辟了一条充满希望的道路。迄今为止,研究主要集中在具有伪晶结构的类钙钛矿氧化物上。由于缺乏合适的牺牲层,严重限制了独立六方氧化物材料的研究。在这里,我们发现了一种水溶性的六方晶体BaAl2O4,它可以作为一种优良的牺牲层,用于获得六重或三重对称的膜。值得注意的是,BaAl2O4可以在水中快速溶解(<1 min),但在空气、O2和NH3中稳定,即使在非常高的温度下也是如此,因此可以原位或非原位生长用于集成器件的高质量材料。为了证明这种牺牲层的普遍性,我们测试了大量的氧化物和氮化物薄膜,包括YMnO3(0001)、LiCoO2(0001)、α-Fe2O3(0001)、In2O3(111)、NiO(111)、β-Ga2O3(2¯01)和TiN(111)。此外,基于这种晶体膜的集成器件表现出显著改善的性能。
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引用次数: 0
Collective photon emission and ferroelectric exciton ordering near Mott insulating state in WSe2/WS2 heterobilayers. WSe2/WS2异质层中Mott绝缘态附近的集体光子发射和铁电激子有序。
IF 41.2 1区 材料科学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2026-01-29 DOI: 10.1038/s41563-025-02476-4
Luka Matej Devenica,Zach Hadjri,Jan Kumlin,Daniel Suárez-Forero,Runtong Li,Klevis Domi,Bosai Lyu,Weijie Li,Ludivine Fausten,Valeria Vento,Nicolas Ubrig,Song Liu,James Hone,Kenji Watanabe,Takashi Taniguchi,Thomas Pohl,Ajit Srivastava
Spontaneous symmetry breaking, driven by competing interactions and quantum fluctuations, is fundamental to understanding ordered electronic phases. Although electrically neutral, optical excitations like excitons can interact through their dipole moment, raising the possibility of optically active ordered phases. The effects of spontaneous ordering on optical properties remains underexplored. The excitonic Mott insulating state recently observed in semiconducting moiré crystals may help clarify this question. Here we present evidence for an in-plane ferroelectric phase of dipolar moiré excitons driven by strong exciton-exciton interactions. We reveal a speed-up of photon emission at late times and low densities in excitonic decay. This counterintuitive behaviour is attributed to collective radiance, linked to the transition between disordered and symmetry-broken ferroelectric phases of moiré excitons. Our findings provide evidence for strong dipolar intersite interactions in moiré lattices, demonstrate collective photon emission as a probe for moiré quantum materials and a path for exploring cooperative optical phenomena in strongly correlated systems.
由相互竞争的相互作用和量子涨落驱动的自发对称性破缺是理解有序电子相的基础。虽然电中性,但像激子这样的光学激发可以通过它们的偶极矩相互作用,从而提高了光学活性有序相的可能性。自发有序对光学性质的影响仍未得到充分的研究。最近在半导体莫尔维尔晶体中观察到的激子莫特绝缘状态可能有助于澄清这个问题。在这里,我们提出了由强激子-激子相互作用驱动的偶极莫尔激子平面内铁电相的证据。我们揭示了光子发射在晚时间和低密度的激子衰变中的加速。这种违反直觉的行为归因于集体辐射,与无序和对称破碎的莫尔激子铁电相之间的转变有关。我们的研究结果为莫尔晶格中强偶极位间相互作用提供了证据,证明了集体光子发射是莫尔晶格量子材料的探针,并为探索强相关系统中的合作光学现象提供了途径。
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引用次数: 0
Scalable manufacture of nearly pure-phase metallic MoS2 nanosheets. 近纯相金属二硫化钼纳米片的规模化制造。
IF 41.2 1区 材料科学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2026-01-29 DOI: 10.1038/s41563-026-02480-2
Ziwei Jeffrey Yang,Zhuangnan Li,Leyi Loh,James Moloney,John Walmsley,Jiahang Li,Yuan Chen,Lixin Liu,Han Zang,Han Yan,Soumya Sarkar,Jason Day,Yan Wang,Manish Chhowalla
Metallic, two-dimensional molybdenum disulfide (MoS2) nanosheets show promise for energy storage and catalysis applications. However, current chemical exfoliation methods require more than 48 h to produce milligrams of material, and result in an impure mixture of metallic (1T/1T', approximately 50%-70%) and semiconducting (2H) phases. Here we demonstrate large-scale and rapid (>600 g h-1) production of nearly pure-phase metallic two-dimensional MoS2 nanosheets using microwave irradiation. Atomic-resolution imaging and X-ray photoelectron spectroscopy show nearly 100% metallic phase in the basal plane. This high purity leads to a large exchange current density (0.175 ± 0.030 mA cm-2) and low Tafel slopes (39-47 mV dec-1) for hydrogen evolution reaction. In supercapacitors and lithium-sulfur pouch-cell batteries, the resulting nanosheets enable a high volumetric capacitance of 753.0 ± 3.6 F cm-3 and a specific capacity of 1,245 ± 16 mAh g-1 (electrolyte-to-sulfur ratio, 2 µl mg-1), respectively. Our method provides a practical pathway for producing high-quality metallic two-dimensional materials for high-performance energy devices.
金属二维二硫化钼(MoS2)纳米片在能量存储和催化应用方面具有广阔的前景。然而,目前的化学剥离方法需要超过48小时才能产生数毫克的材料,并且会产生金属(1T/1T’,约50%-70%)和半导体(2H)相的不纯混合物。在这里,我们展示了大规模和快速(>600 g h-1)生产近纯相金属二维二硫化钼纳米片使用微波辐射。原子分辨率成像和x射线光电子能谱显示基面上接近100%的金属相。这种高纯度导致了大的交换电流密度(0.175±0.030 mA cm-2)和低的Tafel斜率(39-47 mV dec1)。在超级电容器和锂硫袋电池中,所得到的纳米片分别具有753.0±3.6 F cm-3的高体积电容和1,245±16 mAh g-1的比容量(电解硫比为2 μ l mg-1)。我们的方法为生产高性能能源器件的高质量金属二维材料提供了一条实用途径。
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引用次数: 0
Unexpected strong paramagnetism of hydrogels containing carbon–oxygen double bonds induced by calcium cations 含有碳氧双键的水凝胶的意外强顺磁性由钙离子诱导
IF 41.2 1区 材料科学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2026-01-28 DOI: 10.1038/s41563-025-02477-3
Ruoyang Chen, Yue-Yu Zhang, Xing Huang, Liping Wang, Lei Zhang, Chao Song, Lixiong Dai, Min Zhang, Jun Wang, Yong Jian, Weiyuan Xu, Hui Dong, Bingquan Peng, Shuqiang He, Shanshan Liang, Fangfang Dai, Qihui Fan, Fangfu Ye, Xin Zhang, Feng Zhang, Haiping Fang
Hydrogels do not have observable responses to external magnetic fields as they are conventionally thought to be diamagnetic. These materials require additives for magnetic control, limiting biomedical applications due to potential side effects. Here we show that calcium cations can induce strong paramagnetism of hydrogels rich in groups containing carbon–oxygen double bonds, including alginate, carboxymethyl chitosan, polyacrylamide and N-isopropyl acrylamide. Both experiments and computations reveal that the ubiquitous presence of net magnetic moments, the key to paramagnetism, is induced by the unexpected coupling of a single calcium cation and one carbonyl group under large calcium cation excess conditions. The paramagnetic phenomenon is also observed in the endogenous biomolecule sodium hyaluronate with calcium cations. We further demonstrate the applications of the strongly paramagnetic alginate-calcium hydrogel as a contrast agent in magnetic resonance imaging and a carrier in magnetic drug delivery. Our findings provide insights into the origin of magnetism and advance magnetism-related biomedical innovations.
水凝胶对外部磁场没有可观察到的响应,因为它们通常被认为是抗磁性的。这些材料需要磁性控制添加剂,由于潜在的副作用,限制了生物医学应用。本研究表明,钙离子可以诱导富碳氧双键基团的水凝胶具有强顺磁性,包括海藻酸盐、羧甲基壳聚糖、聚丙烯酰胺和n -异丙基丙烯酰胺。实验和计算都表明,在大量钙离子过剩的条件下,单个钙离子和一个羰基的意外耦合引起了普遍存在的净磁矩,这是顺磁性的关键。带钙离子的内源性生物分子透明质酸钠也存在顺磁现象。我们进一步展示了强顺磁性海藻酸钙水凝胶作为磁共振成像造影剂和磁性药物递送载体的应用。我们的发现提供了对磁性起源的见解,并推进了与磁性相关的生物医学创新。
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引用次数: 0
Revealing key structures for reversible sulfur redox in amorphous polymeric sulfur 揭示非晶聚合物硫中可逆硫氧化还原的关键结构
IF 41.2 1区 材料科学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2026-01-28 DOI: 10.1038/s41563-026-02484-y
Nan Wang, Shen Wang, Yu Zheng, Dacheng Kuai, Seungmin Lee, Sha Tan, Dean Yen, Hui Zhong, Sanjit Ghose, Yonghua Du, Perla Balbuena, Ping Liu, Enyuan Hu
Amorphous polymeric sulfur cathodes, such as sulfurized polyacrylonitrile (SPAN), enable high-energy lithium–sulfur batteries without cobalt or nickel, leveraging abundant sulfur. However, the limited in situ understanding of their synthesis and electrochemistry has impeded targeted optimization. Here we integrate operando high-energy total scattering with sulfur K-edge X-ray absorption spectroscopy to monitor SPAN’s formation and cycling in real time. Our results show that S–C bond formation halts further fusion of cyclized polyacrylonitrile, fostering π–π stacking and a transition from long-chain to short-chain sulfur—critical for reversible sulfur redox. These features synergistically minimize polysulfide dissolution and charge-transfer resistance, enabling optimized SPAN to achieve high capacity retention over 1,000 cycles. Operando X-ray absorption spectroscopy reveals that residual protons drive thiol–thione tautomerism, with lithium replacement during the first discharge causing ~20% irreversible capacity loss. To enhance performance, minimizing –NH groups and expanding pyridine networks are key. These findings transform SPAN optimization from empirical tuning to mechanism‑guided engineering and point the way towards sulfur loadings and energy densities competitive with state‑of‑the‑art Li‑ion cathodes.
无定形聚合物硫阴极,如硫化聚丙烯腈(SPAN),可以实现不含钴或镍的高能锂硫电池,利用丰富的硫。然而,对它们的合成和电化学的原位理解有限,阻碍了有针对性的优化。本文将operando高能总散射与硫k边x射线吸收光谱相结合,实时监测SPAN的形成和循环。我们的研究结果表明,S-C键的形成阻止了环化聚丙烯腈的进一步融合,促进了π -π堆叠和从长链硫到短链硫的过渡,这是可逆硫氧化还原的关键。这些特性协同减少了多硫化物溶解和电荷转移阻力,使优化的SPAN能够在1000次循环中实现高容量保持。Operando x射线吸收光谱显示,残余质子驱动硫-硫酮互变异构,第一次放电时锂置换导致约20%的不可逆容量损失。为了提高性能,最小化-NH基团和扩展吡啶网络是关键。这些发现将SPAN优化从经验调整转变为机制引导工程,并指出了与最先进的锂离子阴极竞争的硫负荷和能量密度的方法。
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引用次数: 0
Narrowband quantum emitters in hexagonal boron nitride with optically addressable spins. 具有光学寻址自旋的六方氮化硼窄带量子发射体。
IF 41.2 1区 材料科学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2026-01-27 DOI: 10.1038/s41563-025-02458-6
Benjamin Whitefield,Helen Zhi Jie Zeng,James Liddle-Wesolowski,Islay O Robertson,Ádám Ganyecz,Viktor Ivády,Kenji Watanabe,Takashi Taniguchi,Milos Toth,Jean-Philippe Tetienne,Igor Aharonovich,Mehran Kianinia
Electron spins coupled with optical transitions in solids stand out as a promising platform for developing spin-based quantum technologies. Recently, hexagonal boron nitride has emerged as a promising host for optically addressable spin systems. However, controlled generation of isolated single-photon emitters with predetermined spin transitions has remained elusive. Here we report on a single-step thermal processing of hexagonal boron nitride flakes that produces high-density, narrowband quantum emitters with optically active spin transitions, with over 25% of the emitters exhibiting a clear signature of an optical spin read-out at room temperature. The generated spin defect complexes exhibit both S = 1 and S = 1/2 transitions, which are explained by charge transfer from strongly to weakly coupled spin pairs. Our work advances the understanding of spin complexes in hexagonal boron nitride and paves the way for single spin-photon interfaces in layered materials with applications in quantum sensing and information processing.
固体中的电子自旋与光学跃迁相结合,是开发基于自旋的量子技术的一个有前途的平台。最近,六方氮化硼已成为光学寻址自旋系统的一个有前途的宿主。然而,控制产生具有预定自旋跃迁的孤立单光子发射器仍然是难以捉摸的。在这里,我们报告了六方氮化硼片的单步热处理,产生具有光学活性自旋跃迁的高密度窄带量子发射体,超过25%的发射体在室温下表现出明显的光学自旋读出特征。生成的自旋缺陷配合物表现为S = 1和S = 1/2跃迁,这可以用强耦合自旋对向弱耦合自旋对的电荷转移来解释。我们的工作促进了对六方氮化硼自旋配合物的理解,并为层状材料中的单自旋光子界面在量子传感和信息处理中的应用铺平了道路。
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引用次数: 0
Intertwined orders in a quantum-entangled metal 在量子纠缠的金属中缠绕的顺序
IF 41.2 1区 材料科学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2026-01-27 DOI: 10.1038/s41563-025-02475-5
Junyoung Kwon, Jaehwon Kim, Gwansuk Oh, Seyoung Jin, Kwangrae Kim, Hoon Kim, Seunghyeok Ha, Hyun-Woo J. Kim, GiBaik Sim, Björn Wehinger, Gaston Garbarino, Nour Maraytta, Michael Merz, Matthieu Le Tacon, Christoph J. Sahle, Alessandro Longo, Jungho Kim, Ara Go, Gil Young Cho, Beom Hyun Kim, B. J. Kim
Entanglement underpins quantum computing and information processing, yet its quantitative characterization in correlated materials remains an outstanding challenge. Here we report a highly entangled electronic phase near a quantum metal–insulator transition identified by resonant inelastic X-ray scattering interferometry. Entanglement extending across atomic sites generates distinct interference patterns that are accurately captured by theoretical modelling, enabling quantitative reconstruction of the entanglement spectrum and microscopic resolution of the underlying quantum states. In the pyrochlore iridate Nd2Ir2O7, pronounced quantum fluctuations of spin, orbital and charge persist within the long-range ‘all-in-all-out’ antiferromagnetic order. The observed entanglement signatures indicate the coexistence of multiple symmetry-breaking orders, supported by complementary Raman spectroscopy investigations. A two-magnon bound state appears below the lowest single-magnon excitation energy, which together with split phonon modes indicates a cubic symmetry breaking of magnetic origin coexisting with the all-in-all-out order. These findings establish a quantitative framework linking quantum entanglement to emergent unconventional orders.
纠缠是量子计算和信息处理的基础,但其在相关材料中的定量表征仍然是一个突出的挑战。在这里,我们报告了一个高度纠缠的电子相在量子金属-绝缘体跃迁附近,通过共振非弹性x射线散射干涉测量识别。跨越原子位置的纠缠产生了不同的干涉模式,这些模式可以通过理论建模准确地捕获,从而实现纠缠光谱的定量重建和底层量子态的微观分辨率。在焦绿石铱酸Nd2Ir2O7中,自旋、轨道和电荷的量子涨落在长时间的“全中全”反铁磁秩序中持续存在。观察到的纠缠特征表明多个对称破缺阶共存,这得到了互补拉曼光谱研究的支持。在最低的单磁振子激发能以下出现双磁振子束缚态,这与声子分裂模式表明磁源的立方对称破缺与全中全序共存。这些发现建立了一个定量框架,将量子纠缠与新兴的非常规秩序联系起来。
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引用次数: 0
Exploiting and taming the structural instability for computer memories. 利用和控制计算机存储器的结构不稳定性。
IF 41.2 1区 材料科学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2026-01-27 DOI: 10.1038/s41563-026-02481-1
A Lindsay Greer
{"title":"Exploiting and taming the structural instability for computer memories.","authors":"A Lindsay Greer","doi":"10.1038/s41563-026-02481-1","DOIUrl":"https://doi.org/10.1038/s41563-026-02481-1","url":null,"abstract":"","PeriodicalId":19058,"journal":{"name":"Nature Materials","volume":"42 1","pages":""},"PeriodicalIF":41.2,"publicationDate":"2026-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146056446","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
How charge frustration causes ion ordering and microphase separation at surfaces 电荷挫折是如何引起离子有序和表面微相分离的
IF 41.2 1区 材料科学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2026-01-26 DOI: 10.1038/s41563-025-02467-5
Mingyi Zhang, Benjamin A. Legg, Benjamin A. Helfrecht, Yuanzhong Zhang, Shuai Tan, Ying Xia, Rae Karell Yodong, Monica Iepure, Venkateshkumar Prabhakaran, Peter J. Pauzauskie, Younjin Min, Christopher J. Mundy, James J. De Yoreo
{"title":"How charge frustration causes ion ordering and microphase separation at surfaces","authors":"Mingyi Zhang, Benjamin A. Legg, Benjamin A. Helfrecht, Yuanzhong Zhang, Shuai Tan, Ying Xia, Rae Karell Yodong, Monica Iepure, Venkateshkumar Prabhakaran, Peter J. Pauzauskie, Younjin Min, Christopher J. Mundy, James J. De Yoreo","doi":"10.1038/s41563-025-02467-5","DOIUrl":"https://doi.org/10.1038/s41563-025-02467-5","url":null,"abstract":"","PeriodicalId":19058,"journal":{"name":"Nature Materials","volume":"30 1","pages":""},"PeriodicalIF":41.2,"publicationDate":"2026-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146048362","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
Achieving high tensile strength and ductility in refractory alloys by tuning electronic structure 通过调整电子结构来提高耐火合金的抗拉强度和延展性
IF 41.2 1区 材料科学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2026-01-26 DOI: 10.1038/s41563-025-02464-8
Hailong Huang, Prashant Singh, Duane D. Johnson, Dishant Beniwal, Pratik K. Ray, Gaoyuan Ouyang, Luke Gaydos, Trevor Riedemann, Tirthesh Ingale, Vishal Soni, Rajarshi Banerjee, Thomas W. Scharf, Ping Lu, Frank W. DelRio, Andrew B. Kustas, John A. Sharon, Ryan Deacon, Syed I. A. Jalali, Michael Patullo, Sharon Park, Kevin J. Hemker, Ryan T. Ott, Nicolas Argibay
{"title":"Achieving high tensile strength and ductility in refractory alloys by tuning electronic structure","authors":"Hailong Huang, Prashant Singh, Duane D. Johnson, Dishant Beniwal, Pratik K. Ray, Gaoyuan Ouyang, Luke Gaydos, Trevor Riedemann, Tirthesh Ingale, Vishal Soni, Rajarshi Banerjee, Thomas W. Scharf, Ping Lu, Frank W. DelRio, Andrew B. Kustas, John A. Sharon, Ryan Deacon, Syed I. A. Jalali, Michael Patullo, Sharon Park, Kevin J. Hemker, Ryan T. Ott, Nicolas Argibay","doi":"10.1038/s41563-025-02464-8","DOIUrl":"https://doi.org/10.1038/s41563-025-02464-8","url":null,"abstract":"","PeriodicalId":19058,"journal":{"name":"Nature Materials","volume":"7 1","pages":""},"PeriodicalIF":41.2,"publicationDate":"2026-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146048360","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
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