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Size-dependent two-photon absorption and ultralow optical-limiting response in atomically-thin rhodonite 原子薄菱铁矿中尺寸依赖的双光子吸收和超低光限制响应
IF 6.7 3区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-02-11 DOI: 10.1039/d5nr03776j
Dipanwita Mitra, Caique Campos de Oliveira, Alexey Kartsev, Riya Sadhukhan, Jayanta Kumar Sarkar, Alexander A. Safronov, Dipak Kumar Goswami, Gelu Costin, Pedro Alves da Silva Autreto, Chandra Sekhar Tiwary, Prasanta Kumar Datta
Atomically-thin materials continue to captivate researchers due to their extraordinary physical properties that often surpass those of their bulk forms. Among them, two-dimensional (2D) silicates hold particular promise, yet their nonlinear optical characteristics remain largely underexplored. This study provides an in-depth analysis of the size-dependent nonlinear optical response and optical limiting characteristics of 2D rhodonite nanoflakes, a non-layered silicate mineral, under femtosecond laser excitation. A pronounced enhancement in two-photon absorption is observed as the material transitions from large flakes (∼40 nm thickness) to few-layer structures (∼2.5 nm thickness), with the two-photon absorption coefficient increasing from the 103 to 104 cm GW−1 range, highlighting the influence of dimensional tuning. Few-layer rhodonite exhibits an ultralow optical limiting threshold of 0.38 mJ cm−2, outperforming many benchmark 2D materials, including graphene, TMDCs and MXenes. Density functional theory analysis indicates that the enhanced two-photon absorption in 2D rhodonite arises from the contributions of Fe orbitals originating from electronic states near the Fermi level. In addition, the increased probability of two-photon absorption can also be attributed to transitions between orbitals of similar character with strong contributions, which occur as a result of the hybridization between Si and O p orbitals. These findings position 2D rhodonite as a highly promising candidate for next-generation photonic technologies, including optical switching, 3D microfabrication, and quantum information processing.
原子薄材料由于其非凡的物理特性而继续吸引着研究人员,这些特性通常超过它们的体积形式。其中,二维(2D)硅酸盐具有特别的前景,但其非线性光学特性在很大程度上仍未得到充分研究。本研究深入分析了飞秒激光激发下非层状硅酸盐矿物二维菱铁矿纳米片的尺寸相关非线性光学响应和光学极限特性。当材料从大薄片(~ 40 nm厚度)转变为少层结构(~ 2.5 nm厚度)时,双光子吸收显著增强,双光子吸收系数从103到104 cm GW−1范围内增加,突出了尺寸调谐的影响。少层菱铁矿具有0.38 mJ cm−2的超低光限阈值,优于许多基准2D材料,包括石墨烯、TMDCs和MXenes。密度泛函理论分析表明,二维菱铁矿的双光子吸收增强是由费米能级附近电子态的铁轨道的贡献引起的。此外,双光子吸收概率的增加也可以归因于Si和O p轨道之间的杂化导致的具有相似特征且贡献很大的轨道之间的跃迁。这些发现将二维菱铁矿定位为下一代光子技术的极有前途的候选者,包括光开关、3D微加工和量子信息处理。
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引用次数: 0
Novel Tellurium Oxide-Based Electronic Devices: Preparation, Characterization and Applications 新型氧化碲基电子器件:制备、表征及应用
IF 19 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-02-11 DOI: 10.1002/adfm.202526894
Xiangxiang Gao, Yufeng Chen, Yuelong Feng, Hong Zhang, Miao Zhang, Zhenhua Lin, Yue Hao, Jingjing Chang
With the deep integration of materials science and information technology, the field of electronic devices is undergoing unprecedented material and technological innovations. Tellurium oxide-based electronic devices, leveraging their unique multi-physics coupling characteristics, have emerged as a critical branch of novel functional material systems. Tellurium oxide exhibits excellent optical and electrical properties, demonstrating breakthrough application potential in transistors, memristors, broadband photodetectors, logic gates, and neuromorphic computing. This review systematically examines recent key advancements in tellurium oxide-based electronic devices across material preparation, crystal structure, bandgap engineering, and device applications. By establishing a “material-structure-performance” correlation map, the paper aims to provide researchers in related fields with a research framework that combines theoretical depth and technological foresight, accelerating the innovation of next-generation highly integrated, low-power electronic devices.
随着材料科学与信息技术的深度融合,电子器件领域正在经历前所未有的材料与技术创新。基于氧化碲的电子器件,利用其独特的多物理场耦合特性,已经成为新型功能材料系统的一个重要分支。氧化碲具有优异的光学和电学性能,在晶体管、忆阻器、宽带光电探测器、逻辑门和神经形态计算方面具有突破性的应用潜力。本文系统地研究了氧化碲基电子器件在材料制备、晶体结构、带隙工程和器件应用等方面的最新进展。通过构建“材料-结构-性能”相关图,旨在为相关领域的研究人员提供一个理论深度与技术前瞻相结合的研究框架,加速下一代高集成度、低功耗电子器件的创新。
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引用次数: 0
Reconfigurable Floating Gate Memristors for High-Accuracy Neuromorphic Computing 用于高精度神经形态计算的可重构浮门忆阻器
IF 9.5 2区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2026-02-11 DOI: 10.1021/acsami.5c25387
Decheng Wang,Zihuan Jiao,Linjun Li
The explosive growth of computational data poses significant challenges to conventional von Neumann architectures and network processing capabilities. Two-dimensional floating gate memristors, with their compact footprint, high storage density, prolonged data retention, and rapid programming speeds, are emerging as ideal candidates for neuromorphic computing systems that integrate memory and computation. However, achieving full hardware implementation of deep neural networks necessitates the emulation of nonlinear activation functions. Here, we present a reconfigurable floating gate memristor (FGM) based on a MoS2/hBN/graphene heterostructure. The device demonstrates exceptional performance, including no significant changes in conductive states over a 3600 s test period and 66 linearly tunable conductance states, alongside multilevel conductance tunability under optical pulses. Distinct from traditional research focused solely on synaptic weight updates, we demonstrate an innovative reconfigurable “dual-function hardware unit.” By strictly controlling back gate voltages below the threshold voltage (Vth), we successfully emulate both rectified linear unit (ReLU) and leaky rectified linear unit (Leaky ReLU) behaviors in floating gate and half-floating gate devices, respectively. Integrated into LeNet and AlexNet architectures, the FGM-enabled systems achieve markedly higher inference accuracy compared to activation-free models in classification tasks on the FashionMNIST and 43-class traffic sign data sets. This device simultaneously functions as a tunable synaptic weight and a native nonlinear activation function, thereby opening up the possibility of fully hardware-implemented neuromorphic systems.
计算数据的爆炸性增长对传统的冯·诺依曼架构和网络处理能力提出了重大挑战。二维浮栅忆阻器体积小、存储密度高、数据保存时间长、编程速度快,是集成存储和计算的神经形态计算系统的理想候选者。然而,要实现深度神经网络的全硬件实现,必须对非线性激活函数进行仿真。在这里,我们提出了一种基于MoS2/hBN/石墨烯异质结构的可重构浮栅忆阻器(FGM)。该器件表现出优异的性能,包括在3600秒的测试周期内导电状态没有显著变化,66个线性可调的电导状态,以及光脉冲下的多电平电导可调性。与传统研究只关注突触权重更新不同,我们展示了一种创新的可重构“双功能硬件单元”。通过严格控制后门电压低于阈值电压(Vth),我们成功地分别模拟了浮栅和半浮栅器件中的整流线性单元(ReLU)和漏流整流线性单元(leaky ReLU)行为。集成到LeNet和AlexNet架构中,与未激活的模型相比,支持fgm的系统在FashionMNIST和43类交通标志数据集的分类任务中实现了更高的推理精度。该装置同时具有可调突触权重和原生非线性激活函数的功能,从而开启了完全硬件实现神经形态系统的可能性。
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引用次数: 0
From Glaphene to Glaphynes: A Hybridization of Two-Dimensional Silica Glass and Graphynes 从石墨烯到石墨烯:二维硅玻璃和石墨烯的杂化
IF 17.1 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-02-11 DOI: 10.1021/acsnano.5c16085
Guilherme S. L. Fabris,Raphael B. de Oliveira,Marcelo L. Pereira Jr.,Robert Vajtai,Pulickel M. Ajayan,Douglas S. Galvão
Hybrid two-dimensional (2D) materials have attracted increasing interest as platforms for tailoring electronic properties through interfacial design. Very recently, a hybrid 2D material termed glaphene, which combines monolayers of 2D silica glass and graphene, was experimentally realized. Inspired by glaphenes, we proposed a class of similar structures named glaphynes, which are formed by stacking SiO2 monolayers onto α-, β-, and γ-graphynes. Graphynes are 2D carbon allotropes with the presence of acetylenic groups (triple bonds). The glaphynes’ structural and electronic properties were investigated using the self-consistent-charge density functional tight-binding (SCC-DFTB) method, as implemented in the DFTB+ package. Our analysis confirms their energetic and structural stability. We have observed that in the case of glaphynes, the electronic proximity effect can indeed open the electronic band gap, but not for all cases, even with the formation of Si–O–C bonds between silica and graphynes.
混合二维(2D)材料作为通过界面设计定制电子特性的平台引起了越来越多的兴趣。最近,一种被称为石墨烯的混合二维材料被实验实现,它结合了单层的二维硅玻璃和石墨烯。受石墨烯的启发,我们提出了一类类似的结构,称为石墨烯,它是由SiO2单层堆叠在α-, β-和γ-石墨烯上形成的。石墨炔是含有乙基(三键)的二维碳同素异形体。利用DFTB+封装中实现的自一致电荷密度功能紧密结合(SCC-DFTB)方法研究了石墨烯的结构和电子特性。我们的分析证实了它们的能量和结构的稳定性。我们已经观察到,在石墨烯的情况下,电子邻近效应确实可以打开电子带隙,但并不是所有情况下,即使在二氧化硅和石墨烯之间形成Si-O-C键。
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引用次数: 0
All-Season Thermochromic Organogel Polymers for Passive and Sustainable Building Efficiency 用于被动和可持续建筑效率的全季节热致变色有机凝胶聚合物
IF 9.5 2区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2026-02-11 DOI: 10.1021/acsami.5c22985
Dixon T. Sin,Samuel Au,Benjamin Dopphoopha,Casper H. Y. Chung,Shuhuai Yao
Regulating solar heat gain is crucial for reducing heating, ventilation, and air conditioning (HVAC) energy consumption in buildings and promoting sustainable responses to climate change. Current thermochromic materials suffer from poor durability and limited optical modulation. Here, the study presents a durable thermochromic coating based on an organogel-higher alkane (HA) composite. The reversible phase change of HA within the organogel induces light reflection, scattering, and diffraction, while carbon black particles enhance the absorptance modulation, achieving a maximum change of 0.35. For practical application on cement, where a highly reflective layer is applied beneath, the absorptance modulation can reach 0.25, exceeding reported values for other thermochromic systems that could be applied to the roof or wall. The material withstands prolonged UV exposure and repeated thermal cycling without degradation, making it suitable for real-world applications. Simulations incorporating a reflective underlayer demonstrate potential annual HVAC energy savings of up to 3% across diverse climate zones. This work introduces a robust, scalable, and season-adaptive thermochromic coating for sustainable building energy management.
调节太阳能热增益对于减少建筑供暖、通风和空调(HVAC)能耗和促进可持续应对气候变化至关重要。目前的热致变色材料存在耐久性差、光调制受限等问题。本研究提出了一种基于有机凝胶-高烷烃(HA)复合材料的耐用热致变色涂层。有机凝胶内透明质酸的可逆相变引起光反射、散射和衍射,而炭黑颗粒增强了吸收调制,最大变化为0.35。在水泥上的实际应用中,在水泥下面应用高反射层,吸收调制可以达到0.25,超过了其他可应用于屋顶或墙壁的热致变色系统的报道值。该材料可以承受长时间的紫外线照射和反复的热循环而不会降解,使其适合实际应用。结合反射底层的模拟表明,在不同的气候区,暖通空调每年可节省高达3%的能源。这项工作为可持续建筑能源管理引入了一种强大的、可扩展的、季节性适应的热致变色涂层。
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引用次数: 0
Biomimetic Nanotherapy Targeting lncRNA TUG1 Alleviates Doxorubicin-Induced Cardiomyopathy by Suppressing Microvascular Ferroptosis 靶向lncRNA TUG1的仿生纳米疗法通过抑制微血管下垂缓解阿霉素诱导的心肌病
IF 9.5 2区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2026-02-11 DOI: 10.1021/acsami.5c22847
Peng Chao,Xueqin Zhang,Patiguli Kadierjiang,Yongguo Liu,Aiping Yang,Yong Wang,Xiaoyang Chen,Yining Yang
Doxorubicin (DOX)-induced cardiomyopathy remains therapeutically challenging due to the absence of pathway-specific interventions. Ferroptosis of cardiac microvascular endothelial cells (CMECs) is a major driver of disease progression, yet precise therapeutic strategies remain limited. Here, mechanistic analyses identified lncRNA TUG1 as an upstream promoter of CMEC ferroptosis through the miR-153-5p/MMP2-TIMP2/TFR-1 axis. Guided by this mechanism, a translational construct was developed by cloaking mesoporous silica nanoparticles carrying TUG1-targeting siRNA with neutrophil membranes (NM@si-TUG1/MSN). The neutrophil membrane coating enabled robust cardiac tropism and preferential CMEC uptake. In a murine model of DOX-induced cardiomyopathy, NM@si-TUG1/MSN accumulated in the heart, achieved effective TUG1 knockdown, and markedly reduced ferroptosis. Relative to free siRNA and uncoated nanoparticles, the nanocomplex produced superior outcomes, including restoration of microvascular integrity, reduced fibrosis, and significant improvement in cardiac function. This study characterizes a regulatory axis in DOX-induced cardiomyopathy and demonstrates a targeted biomimetic nanotherapy that interrupts microvascular ferroptosis and limits disease progression. The data support the feasibility of this approach for clinical translation.
由于缺乏途径特异性干预,阿霉素(DOX)诱导的心肌病在治疗上仍然具有挑战性。心脏微血管内皮细胞(CMECs)的铁上睑下沉是疾病进展的主要驱动因素,但精确的治疗策略仍然有限。在这里,机制分析发现lncRNA TUG1通过miR-153-5p/MMP2-TIMP2/TFR-1轴作为CMEC铁凋亡的上游启动子。在这一机制的指导下,通过将携带tug1靶向siRNA的介孔二氧化硅纳米颗粒包裹在中性粒细胞膜(NM@si-TUG1/MSN)上,开发了一种翻译结构。中性粒细胞膜涂层具有强大的心脏趋向性和优先的CMEC摄取。在dox诱导的小鼠心肌病模型中,NM@si-TUG1/MSN在心脏中积累,实现了TUG1的有效敲除,并显著减少了铁下垂。与游离siRNA和未包被纳米颗粒相比,纳米复合物产生了更好的结果,包括微血管完整性的恢复、纤维化的减少和心功能的显著改善。本研究描述了dox诱导心肌病的调控轴,并展示了一种靶向仿生纳米疗法,可阻断微血管铁下垂并限制疾病进展。数据支持该方法用于临床翻译的可行性。
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引用次数: 0
Achieving superior high-temperature strength–ductility synergy in a Cu–Ag–Zr alloy via trace Ce doping induced atomic substitution and precipitate refinement 通过微量Ce掺杂诱导原子取代和析出相细化,实现Cu-Ag-Zr合金优异的高温强度-延展性协同作用
IF 9.4 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2026-02-11 DOI: 10.1016/j.actamat.2026.122011
Xiang Wu, Wenfeng Pang, Tianle Li, Jingxia Sun, Xiaochun Liu
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引用次数: 0
Ordered nanodendritic NiSe-NiS/NFF with crystalline structure for efficient overall water splitting 有序纳米枝状nese - nis /NFF具有高效的整体水分解晶体结构
IF 6.2 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Pub Date : 2026-02-11 DOI: 10.1016/j.jallcom.2026.186791
Zhichao Liu, Yongwen Xu, Xubin Ye, Guanting Li, Yuanzheng Yang, Yanxue Wu, Shunxing Liang, Weitong Cai, Jie Cui
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引用次数: 0
Fe3O4-CNFs@MXene with Encapsulated Magnetic Nanoparticles for Tunable High-Performance Microwave Absorption via Dual Electromagnetic Wave Loss Pathways Fe3O4-CNFs@MXene与封装磁性纳米颗粒可调谐的高性能微波吸收通过双电磁波损耗途径
IF 11.5 2区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2026-02-11 DOI: 10.1016/j.mtphys.2026.102043
Yu Wang, Xiao Li, Haowei Zhou, Zilin Huang, Moustafa Adel Darwish, M.M. Salem, Tao Zhou, Murat Yilmaz, Azim Uddin, Di Zhou
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引用次数: 0
Nanocomposite cation-exchange membranes based on SPES + S−SiO2 NPs for power generation through reverse electrodialysis 基于spe + S−SiO2 NPs的纳米复合阳离子交换膜用于反电渗析发电
IF 6.6 3区 材料科学 Q1 ELECTROCHEMISTRY Pub Date : 2026-02-11 DOI: 10.1016/j.electacta.2026.148415
Jesus Nahum Hernandez−Perez, Lucía Gómez−Coma, Rosa de Guadalupe González−Huerta, Alfredo Ortiz
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引用次数: 0
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