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Optimizing large optical contrast in Ge-Se-Te films via high-throughput method

Progress in Natural Science:Materials International 2025年第1期35卷 222-228页

作者： Qiqi Chen Guoxiang Wang Zijun Liu Yixiao Gao Chenjie Gu Tiefeng Xu Xiang Shen Yimin Chen Laboratory of Infrared Material and Devices & Key Laboratory of Photoelectric Materials and Devices of Zhejiang Province Advanced Technology Research InstituteNingbo University Department of Microelectronic Science and Engineering School of Physical Science and Technology Ningbo University Ningbo Solartrum Co.Ltd.

Chalcogenide phase-change materials（PCMs） have attracted great attentions due to their potential applications in reconfigurable photonic devices. The Ge2Sb2Te5and GeTe PCMs exhibit significant difference in refractive index（Δn） between amorphous and crystalline states, but they suffer from high optical loss. The binary Sb2S3and Sb2Se3PCMs, however, show low optical loss but small Δn. This encourages us to develop the novel materials,which are desired to combine large Δn and low optical loss. Instead of traditional trial-and-error screening method, we here used an efficient high-throughput method to optimize the PCMs' candidates for reconfigurable photonic devices in Ge-Se-Te chalcogenides. The crystallization temperature and difference in optical bandgap were detected, and then the component of Ge25Se7Te68, which also exhibits ultralow optical loss of 1.2 × 10-6（in amorphous state） and large Δn of 1.32 at 1550 nm, was optimized. This Te-rich Ge-Se-Te film can be a candidate for the applications of programmable reconfigurable photonic circuits.

关键词： Chalcogenide phase-change films High-throughput Reconfigurable photonics Refractive index

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Humidity Sensor Based on a Hollow Core Fiber Anti-Resonant Reflection Optical Waveguide

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Photonic Sensors 2025年第2期15卷 13-23页

作者： Ao CHENG Chaoqi WANG Jiadong XU Peiqing ZHANG Yu ZHENG Shixun DAI Laboratory of Infrared Material and Devices Advanced Technology Research InstituteNingbo UniversityNingbo315211China Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province Ningbo 315211China Engineering Research Center for Advanced Infrared Photoelectric Materials and Devices of Zhejiang Province NingboUniversityNingbo 315211China Ifiber(Ningbo)Optoelectronics Technology Co. Ltd.Ningbo 315211China

In this paper,a graphene oxide(GO)composite film-coated humidity sensor is proposed based on the hollow core fiber(HCF).A segment of the HCF is spliced between two segments of the single-mode fiber(SMF).The relative humidity(RH)sensing characteristics of the sensor are experimentally investigated by observing the intensity shift of resonant dips in the transmission spectrum,which shows the GO composite film-coated HCF has the good stability in the measurement of *** maximum humidity sensitivity of 0.12 dB/%RH is obtained in the RH range of 30%–78%.The proposed sensor has the advantages of the simple structure,easy fabrication,good stability,and high performance,which can be applied to marine climate detection,tunnel air humidity detection,agricultural testing,and other fields.

关键词： Humidity sensing hollow core fiber anti-resonant refection optical waveguide graphene oxide

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Anisotropic transport properties and topological Hall effect in the annealed kagome antiferromagnet FeGe

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Science China(Physics,Mechanics & Astronomy) 2025年第3期68卷 153-160页

作者： Jiajun Ma Chenfei Shi Yantao Cao Yuwei Zhang Yazhou Li Jiaxing Liao Jialu Wang Wenhe Jiao Hanjie Guo Chenchao Xu Shixun Cao Jianhui Dai Jin-Ke Bao Yuke Li School of Physics Hangzhou Key Laboratory of Quantum MattersHangzhou Normal UniversityHangzhou311121China Department of Physics Materials Genome Institute and International Center for Quantum and Molecular StructuresShanghai UniversityShanghai200444China Key Laboratory of Quantum Precision Measurement of Zhejiang Province Department of Applied PhysicsZhejiang University of TechnologyHangzhou310023China Songshan Lake Materials Laboratory Dongguan523808China School of Physical Science and Technology Lanzhou UniversityLanzhou730000China

Electron correlation often gives birth to various orders in quantum ***,a strongly correlated kagome antiferromagnet Fe Ge is discovered to undergo a charge density wave transition inside the A-type antiferromagnetic state,providing an opportunity to explore the interplay between charge order and ***,we reported the observation of anisotropic resistivity and Hall effect,along with a topological Hall effect,in the annealed Fe Ge *** the current flows along the abplane,the temperature dependence ofρ_(ab)exhibits a distinct resistivity loop related to a first-order transition at T_(cdw).The applied magnetic fields do not alter T_(cdw)but can induce a spin-flop transition at H_(sf).Consequently,a field-induced large topological Hall effect is observed in the canting antiferromagnetic(CAFM)state below T_(cant),which is possibly attributed to the non-trivial spin texture during the spin-flop ***,as current is parallel to c-axis,both the field-induced transitions inρ_(c)andχ_(c)***,the Hall resistivity in the annealed Fe Ge significantly exhibits a deviation from the linear *** findings provide valuable insight into revealing the interplay among magnetism,charge order and topology in the kagome magnets.

关键词： charge density wave Hall effect transport properties kagome magnet

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15.13%Sr-doped CsPbI_(3) quantum dots with near-unity quantum yield via surface ligand compensation

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Nano Research 2025年第4期18卷 534-543页

作者： Yi Peng Wanzhong Gu Yuhui Dong Yucong Ji Danni Yan Ziyun Lin Li Zhang Yousheng Zou Haibo Zeng MIIT Key Laboratory of Advanced Display Materials and Devices Jiangsu Province Engineering Research Center of Quantum Dot DisplaySchool of Materials Science and EngineeringInstitute of Optoelectronics and NanomaterialsNanjing University of Science and TechnologyNanjing 210094China

Sr-doping of perovskite quantum dots(QDs)is a promising strategy to reduce Pb content and improve optical performance and ***,excessive Sr introduces new defects that degrade photoluminescence quantum yield(PLQY).Therefore,it is a challenge to balance high optical performance with high doping concentration for the preparation of environmentally friendly perovskite *** this study,we report the highest Sr/Pb ratios Sr-doped CsPbI_(3) QDs(15.13%)with a near-unity *** balance between high PLQY and high Sr-doping rate is achieved through the introduction of oleylammonium iodide(OAmI)ligand compensation during the anti-solvent purification process,which can form an iodine-enriched environment and effectively passivates the surface defects of QDs caused by excessive ***,the Sr-doped CsPbI_(3) QDs exhibit superior stability in environments with high temperature and humidity or direct contact with *** strategy provides a novel approach for the preparation of lead-less and lead-free QDs with superior optical performance and stability,offering a potential solution for environmentally friendly applications.

关键词： CsPbI_(3)quantum dots Sr-doping ligand compensation photoluminescence quantum yield environmental stability

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Advancements in Wound Management: Microenvironment-Sensitive Bioactive Dressings with On-Demand Regulations for Diabetic Wounds

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Engineering 2025年 48卷 234-261页

作者： Xue, Yanan Zhou, Junping Lu, Ying Zhang, Huiling Chen, Bailin Dong, Shaoan Xue, Yawen Zhan, Kan Chen, Cheng Sun, Yi Wu, Sufan Jin, Liqun Liu, Zhiqiang Zheng, Yuguo Hangzhou310014 China Key Laboratory of Bioorganic Synthesis of Zhejiang Province College of Biotechnology and Bioengineering Zhejiang University of Technology Hangzhou310014 China Huadong Industrial Technology Institute of Synthetic Biology Hangzhou310014 China Stomatology Hospital School of Stomatology Zhejiang University School of Medicine Zhejiang Provincial Clinical Research Center for Oral Diseases Key Laboratory of Oral Biomedical Research of Zhejiang Province Cancer Center of Zhejiang University Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province Hangzhou310000 China

Diabetic wounds (DWs) are a major complication of diabetes mellitus, characterized by a complex pathophysiological microenvironment that is associated with elevated morbidity and mortality. Conventional management strategies often fail to address the multifaceted nature of these wounds effectively. Recent advancements in understanding the mechanisms of DW healing have spurred the development of a plethora of bioactive dressings designed to interact with and modulate the DW microenvironment. These innovations have culminated in the introduction of the "microenvironment-sensitive with on-demand management" paradigm aimed at delivering precision therapy responsive to dynamic changes within DW. Despite these advancements, the current literature lacks a comprehensive review that categorizes and evaluates active, passive, and on-demand approaches that address the DW microenvironment. Herein, we describe the unique pathogenic mechanisms and microenvironmental characteristics that distinguish DW from normal acute wounds. This review provides an extensive overview of contemporary active and passive management strategies incorporating on-demand management principles designed for DW microenvironments. Furthermore, it addresses the principal challenges faced in this therapeutic domain and outlines the potential innovations that can enhance the efficacy and specificity of bioactive dressings. The insights presented here aim to guide further research and development in the on-demand management of DW to improve patient outcomes by aligning personalized therapy modalities with the pathophysiological realities of DW. © 2025 THE AUTHORS

关键词： Research and development management

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Improving structure stability of single-crystalline Ni-rich cathode at high voltage by element gradient doping and interfacial modifcation

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Journal of Energy Chemistry 2025年第2期101卷 630-640,I0013页

作者： Ruijuan Wang Yixu Zhang Zhi Li Lei Wu Jiarui Chen Xiaolin Liu Hui Hu Hao Ding Shuang Cao Qiliang Wei Xianyou Wang National Base for International Science&Technology Cooperation of New Energy Equipment Energy Storage Materials and DevicesNational Local Joint Engineering Laboratory for Key Materials of New Energy Storage BatteryHunan Province Key Laboratory of Electrochemical Energy Storage&ConversionSchool of ChemistryXiangtan UniversityXiangtan 411105HunanChina Institute of Micro/Nano Materials and Devices Ningbo University of TechnologyNingbo 315211ZhejiangChina

Single-crystalline Ni-rich cathodes can provide high energy density and capacity retention rates for lithium-ion batteries(LIBs).However,single-crystalline Ni-rich cathodes experience severe transition metal dissolution,irreversible phase transitions,and reduced structural stability during prolonged cycling at high voltage,which will significantly hinder their practical ***,a Li4TeO5surface coating along with bulk Te-gradient doping strategy is proposed and developed to solve these issues for single-crystalline Ni-rich LiNi_(0.90)Co_(0.05)Mn_(0.05)O_(2)cathode(LTeO-1.0).It has been found that the bulk Te^(6+)gradient doping can lead to the formation of robust Te-O bonds that effectively inhibit H_(2)-H3 phase transformations and reinforce the lattice framework,and the in-situ Li4TeO5coating layer can act as a protective layer that suppresses the parasitic reactions and grain ***,the modified material exhibits a higher Young's modulus,which will be conducive to maintaining significant structural and electrochemical stability under high-voltage conditions,Especially,the LTeO-1.0 electrode shows the improved Li^(+)diffusion kinetics and thermodynamic stability as well as high capacity retention of 95.83%and 82.12%after 200 cycles at the cut-off voltage of 4.3 and 4,5 ***,the efficacious dualmodification strategy will definitely contribute to enhancing the structural and electrochemical stability of single-crystalline Ni-rich cathodes and developing their application in LIBs.

关键词： Single-crystalline Ni-rich cathode High cut-off voltage Material fragmentation Li_(4)TeO_(5)coating layer Te^(6+)doping

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Ion-modulation optoelectronic neuromorphic devices:mechanisms,characteristics,and applications

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Journal of Semiconductors 2025年第2期46卷 24-36页

作者： Xiaohan Meng Runsheng Gao Xiaojian Zhu Run-Wei Li CAS Key Laboratory of Magnetic Materials and Devices Ningbo Institute of Materials Technology and EngineeringChinese Academy of Sci-encesNingbo 315201China Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology Ningbo Institute of Materials Technology andEn gineer-ingChinese Academy of SciencesNingbo 315201China School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China

The traditional von Neumann architecture faces inherent limitations due to the separation of memory and computa-tion,leading to high energy consumption,significant latency,and reduced operational *** computing,inspired by the architecture of the human brain,offers a promising alternative by integrating memory and computational func-tions,enabling parallel,high-speed,and energy-efficient information *** various neuromorphic technologies,ion-modulated optoelectronic devices have garnered attention due to their excellent ionic tunability and the availability of multi-dimensional control *** review provides a comprehensive overview of recent progress in ion-modulation optoelec-tronic neuromorphic *** elucidates the key mechanisms underlying ionic modulation of light fields,including ion migra-tion dynamics and capture and release of charge through ***,the synthesis of active materials and the proper-ties of these devices are analyzed in *** review also highlights the application of ion-modulation optoelectronic devices in artificial vision systems,neuromorphic computing,and other bionic ***,the existing challenges and future direc-tions for the development of optoelectronic neuromorphic devices are discussed,providing critical insights for advancing this promising field.

关键词： ion migration optoelectronic modulation optoelectronic device neuromorphic computing artificial vision system

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Macrophage response to fibrin structure mediated by Tgm2-dependent mitochondrial mechanosensing

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Bioactive Materials 2025年 50卷 382-395页

作者： Gao, Bicong Ni, Haifeng Lai, Junhong Gao, Ning Luo, Xinxin Wang, Ying Chen, Yani Zhao, Jiaying Yu, Zhou Zhang, Jing Cai, Wenjin Yang, Guoli Stomatology Hospital School of Stomatology Zhejiang University School of Medicine Zhejiang Provincial Clinical Research Center for Oral Diseases Key Laboratory of Oral Biomedical Research of Zhejiang Province Cancer Center of Zhejiang University Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province Hangzhou 310000 China Zhejiang Key Laboratory of Plastic Modification and Processing Technology College of Materials Science & Engineering Zhejiang University of Technology Hangzhou 310014 China

Following an injury at the implantation position, blood-material interactions form a fibrin architecture, which serves as the initial activator of foreign body response (FBR). However, there is limited knowledge regarding how the topography of fibrin architectures regulates macrophage behavior in mitigating FBR. Mechanical cues of the microenvironment have been reported to shape immune cell functions. Here, we investigated macrophage mechanobiology at the organelle level by constructing heterogeneous fibrin networks. Based on findings in vivo, we demonstrated that adhesion-mediated differentiation of mitochondrial function modulated macrophage polarization. The finite activation of integrin signaling upregulated transglutaminase 2 (Tgm2) in a trans-manner, augments PGC1α-mediated mitochondrial biogenesis. Our study highlighted the previously overlooked spatial structures of host proteins adsorbed on material surfaces, advocating for a paradigm shift in material design strategies, from focusing solely on physical properties to considering the modification of host proteins. © 2025 The Authors

关键词： Biomaterial recognition Foreign body response Mechanotransduction Mitochondrion Transglutaminase

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Modulation of Bessel-like vector vortex beam using the resonant magneto-optical effect in rubidium vapor

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Chinese Physics B 2025年第2期34卷 274-280页

作者： Yan Ma Xin Yang Hong Chang Ming-Tao Cao Xiao-Fei Zhang Rui-Fang Dong Shou-Gang Zhang Key Laboratory of Time Reference and Applications National Time Service CenterChinese Academy of Sciences(CAS)Xi’an 710600China School of Astronomy and Space Science University of Chinese Academy of SciencesBeijing 100049China Ministry of Education Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter Shaanxi Province Key Laboratory of Quantum Information and Quantum Optoelectronic DevicesSchool of PhysicsXi’an Jiaotong UniversityXi’an 710049China Department of Physics Shaanxi University of Science and TechnologyXi’an 710021China Hefei National Laboratory Hefei 230088China

The Bessel-like vector vortex beam(BlVVB)has gained increasing significance across numerous ***,its practical application is restricted by manufacturing difficulties and polarization ***,the ability to manipulate its degrees of freedom is highly *** this paper,the full-domain polarization modulation of BlVVB within a hot atomic ensemble has been *** begin with the theoretical analysis of the resonant magneto-optical effect of atoms with a horizontal linear-polarized beam and experimentally demonstrate precise manipulation of the polarization state across the entire domain of the BlVVB,achieving an error margin of less than 3°at various cross-sectional *** study provides a novel approach for the modulation of BlVVB based on atomic media,which holds potential applications in sensitive vector magnetometers,optical communications,and signal processing.

关键词： Bessel-like vector vortex beam resonant magneto-optical effect polarization modulation Rb atomic ensemble

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Microelectromechanical 2-Bit Logic Device via Frequency Comb Generation 38

Microelectromechanical 2-Bit Logic Device via Frequency Comb...

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38th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2025

作者： Chen, Hongyu Chen, Dongyang Wang, Chen Huan, Ronghua Kraft, Michael Xie, Jin Zhejiang University Institude of Precision Engineering and Micro-/Nano Technology China Leuven Belgium Zhejiang University Department of Mechanics Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province Hangzhou China

ISBN: (纸本)9798331508890

The paper introduces a 2-bit logic device capable of executing all fundamental 2-bit logic operations, such as NOT, NOR, OR, AND, NAND, XOR, and XNOR, utilizing a microelectromechanical resonator with frequency comb generation. Despite the growing interest in phononic frequency combs (PFCs), their practical applications have been underexplored. This work highlights a potential application in logical operations, where pump signals act as logic inputs. The resonator is fabricated using standard silicon-on-insulator technology, making it suitable for integration into on-chip systems. © 2025 IEEE.

关键词： Silicon on insulator technology

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