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On-chip light control of semiconductor optoelectronic devices using integrated metasurfaces

Opto-Electronic Advances 2025年第1期8卷 5-30页

作者： Cheng-Long Zheng Pei-Nan Ni yi-Yang xie Patrice Genevet Henan Key Laboratory of Diamond Optoelectronic Materials and Devices Key Laboratory of Materials PhysicsMinistry of EducationSchool of PhysicsZhengzhou UniversityZhengzhou 450052China Key Laboratory of Optoelectronics Technology Beijing University of TechnologyMinistry of EducationBeijing 100124China Colorado School of Mines 1523 Illinois St.GoldenCO 80401USA

Semiconductor optoelectronics devices,capable of converting electrical power into light or conversely light into electrical power in a compact and highly efficient manner represent one of the most advanced technologies ever developed,which has profoundly reshaped the modern life with a wide range of *** recent decades,semiconductor technology has rapidly evolved from first-generation narrow bandgap materials(Si,Ge)to the latest fourth-generation ultra-wide bandgap semiconductor(GaO,diamond,AlN)with enhanced performance to meet growing ***,merging semiconductor devices with other techniques,such as computer assisted design,state-of-the-art micro/nano fabrications,novel epitaxial growth,have significantly accelerated the development of semiconductor optoelectronics *** them,integrating metasurfaces with semiconductor optoelectronic devices have opened new frontiers for on-chip control of their electromagnetic response,providing access to previously inaccessible degrees of *** review the recent advances in on-chip control of a variety of semiconductor optoelectronic devices using integrated metasurfaces,including semiconductor lasers,semiconductor light emitting devices,semiconductor photodetectors,and low dimensional *** integration of metasurfaces with semiconductors offers wafer-level ultracompact solutions for manipulating the functionalities of semiconductor devices,while also providing a practical platform for implementing cuttingedge metasurface technology in real-world applications.

关键词： optoelectronics nanophotonics metasurfaces semiconductor

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Advancing a thriving materials science community: the 2025 Emerging Investigator Issue of Science China Materials

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Science China Materials 2025年第03期 689-690页

作者： yi xie School of Chemistry and Materials Science University of Science and Technology of China

To support early-career scientists in the initial stages of their independent careers, Science China Materials is proud to present the 2025 Emerging Investigator Issue. This initiative emphasizes the recognition of em...

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Operando and reversible manipulation of Pt electrocatalytic properties through its substrate phase transition

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Science China Chemistry 2025年

作者： Hongfei Liu yi xie Changzheng Wu Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of China Key Laboratory of Precision and Intelligent Chemistry School of Chemistry and Materials ScienceCollaborative Innovation Center of Chemistry for Energy Materials (iChEM)and CAS Center for Excellence in NanoscienceUniversity of Science and Technology of China Institute of Energy Hefei Comprehensive National Science Center

The lattice strain is considered critical for determining the catalytic activity of metal catalysts such as Pt. However, the dynamic manipulation of Pt lattice strain under reaction conditions to directly examine its catalytic effect has not been achieved. In this study, we realized the reversible manipulation of Pt electrocatalytic properties under electrochemical conditions by tuning the Pt lattice strain with the temperature-controlled Martensite-Austenite phase transition of the shape memory NiTi alloy *** enabled establishing a straightforward relationship between the strain-induced electronic structure transformation and electrocatalytic activity leaping. The binding strength between Pt and surface oxygen species was confirmed as the critical factor that dominated the hydrogen evolution and the oxygen reduction activities. In contrast, the oxygen evolution activity was barely affected by NiTi substrate phase transition.

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2D free-standing ultra-large ferromagnetic nanosheets via a topotactic transformation strategy

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Science China Chemistry 2025年

作者： Haofeng Sun Minghao Wang Wenjie Li Yang Liu Xinyu Sun Wenjie Wang Yuqiao Guo yi xie Changzheng Wu Key Laboratory of Precision and Intelligent Chemistry University of Science&Technology of China National Synchrotron Radiation Laboratory University of Science and Technology of China

Considerable progress has been made in synthesizing two-dimensional （2D） materials by exfoliating layered ***,for tremendous non-layered inorganic materials,especially magnet solids,usually with closely packed bulk phases by strong chemical bonds,it is challenging to obtain their high-quality 2D ***,we highlighted a new structure of free-standing ferromagnetic nanosheets featuring （111） *** magnet,Fe3O4,its inversed spinel crystalline has limited abilities to exfoliate into 2D forms and rarely exists as free-standing nanosheets owing to aggregation induced by magnetic *** realized a breakthrough in achieving free-standing ferromagnetic nanosheets with dramatically surpassing size limitations via topotactic conversion from layered *** Fe3O4nanosheets exhibited a maximum width of 60μm while only～4 nm thick,prominently exposing （111） facets.2D Fe3O4behaved anisotropic magnetism,which displayed a 4.6 emu g-1moment（H=500 Oe） in the （111） plane but 2.1 emu g-1out of the （111） plane,indicating a （111） in-plane easy *** anticipated our topotactic conversion strategy would inspire the creation of 2D non-layered materials and enrich the 2D materials family.

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Alpiniae oxyphyllae Fructus ameliorates renal lipid accumulation in diabetic kidney disease via activating PPARα

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Asian Pacific Journal of Tropical Biomedicine 2025年第1期15卷 11-23,I0008-I0012页

作者： Zi-Jie Yan Lin Zhang Xin-Yao Han Yu Kang Shu-Man Liu Tian-Peng Ma Man Xiao yi-Qiang xie College of Traditional Chinese Medicine Hainan Medical UniversityHaikou 571199China First Clinical College of Medicine of Guizhou University of Traditional Chinese Medicine Guiyang 550002China Heilongjiang Academy of Traditional Chinese Medicine Harbin 150001China Key Laboratory of Tropical Translational Medicine of Ministry of Education School of Basic Medicine and Life SciencesHainan Medical UniversityHaikou 571199China

Objective:To investigate the effects of Alpiniae oxyphyllae Fructus(AOF)on renal lipid deposition in diabetic kidney disease(DKD)and elucidate its molecular ***:The mechanism of AOF in treating DKD was explored by network pharmacological enrichment analysis,molecular docking,and molecular dynamics *** effects of AOF on renal function and lipid deposition were assessed in a mouse model of DKD and high glucose-stressed HK-2 *** viability and lipid accumulation were detected by CCK8 and oil red O *** expressions of PPARαand fatty acid oxidation-related genes(ACOX1 and CPT1A)were detected by quantitative RT-PCR,Western blot,and ***,PPARαknockdown was performed to examine the molecular mechanism of AOF in treating ***:Network pharmacological enrichment analysis,molecular docking,and molecular dynamics simulation showed that the active compounds in AOF targeted PPARαand thus transcriptionally regulated ACOX1 and *** lowered blood glucose,improved dyslipidemia,and attenuated renal injury in DKD ***-containing serum accentuated high glucose-induced decrease in cell viability and ameliorated lipid ***,it significantly upregulated the expression of PPARα,ACOX1,and CPT1A in both in vivo and in vitro experiments,which was reversed by PPARα***:AOF may promote fatty acid oxidation via PPARαto ameliorate renal lipid deposition in DKD.

关键词： Diabetic kidney disease Alpiniae oxyphyllae Fructus Natural medicine Lipid accumulation PPARα Fatty acid oxidation

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医院人事档案管理中信息技术应用的创新策略

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办公自动化 2025年第1期30卷 94-96页

作者：谢毅福建医科大学孟超肝胆医院福州350028

作为医院管理体系的重要组成部分,人事档案管理不仅关乎医院内部人员信息的准确性与安全性,还直接影响人力资源的合理配置与医院整体运营效率。面对传统档案管理模式存在效率低、信息更新不及时、检索困难等问题,探索并应用信息技术手段... 详细信息

作为医院管理体系的重要组成部分,人事档案管理不仅关乎医院内部人员信息的准确性与安全性,还直接影响人力资源的合理配置与医院整体运营效率。面对传统档案管理模式存在效率低、信息更新不及时、检索困难等问题,探索并应用信息技术手段,对医院人事档案管理进行创新与优化显得尤为迫切和重要。云计算、大数据分析、人工智能等技术的发展,为档案管理的自动化、智能化提供可能。为此,文章将目光放在此类信息技术在医院人事档案管理工作的应用方面,旨在为医院决策提供更加科学、全面的数据支持,促进医院管理的现代化转型。

关键词：医院管理人事档案管理数字化技术信息化

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Enhanced mechanical squeezing in an optomechanical system via backward stimulated Brillouin scattering

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Chinese Physics B 2025年第1期34卷 315-322页

作者： Shan-Shan Chen yi-Long xie Jing-Jing Zhang Na-Na Zhang Yong-Rui Guo Huan Yang Yong Ma School of Optoelectronic Engineering Chongqing University of Posts and TelecommunicationsChongqing 400065China China Electronics Technology Group Corporation 44th Research Institute Chongqing 400065China

We investigate theoretically the enhancement of mechanical squeezing in a multimode optomechanical system by introducing a coherent phonon–photon interaction via the backward stimulated Brillouin scattering(BSBS)*** coherent photon–phonon interaction where two optical modes couple to a Brillouin acoustic mode with a large decay rate provides an extra channel for the cooling of a Duffing mechanical *** squeezing degree and the robustness to the thermal noises of the Duffing mechanical mode can be enhanced *** the Duffing nonlinearity is weak,the squeezing degree of the mechanical mode in the presence of BSBS can be improved by more than one order of magnitude compared with that in the absence of *** scheme may be extended to other quantum systems to study novel quantum effects.

关键词： mechanical squeezing optomechanical system backward stimulated Brillouin scattering Duffing nonlinearity

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Strategies for enhancing conductivity of colloidal nanocrystals and their photoelectronic applications

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Journal of Energy Chemistry 2020年第9期29卷 29-42,I0002页

作者： Fen Qiao yi xie School of Energy&Power Engineering Jiangsu UniversityZhenjiang 212013JiangsuChina State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070HubeiChina

Semiconductor colloidal nanocrystals(NCs)have size-and shape-dependent optoelectronic properties due to the quantum confinement effect,and are considered to be promising optoelectronic *** them,Ⅱ-Ⅵ(CdSe,CdS,CdTe,etc.)andⅣ-Ⅵ(PbSe,PbTe,PbS,etc.)have been widely studied as representative colloidal ***,the surfactant used in its synthesis progress results in the NCs surface covered by an insulating shell,which greatly affects the exciton separation and carrier transport of colloidal NCs-based photovoltaic ***,how to design high-efficiency optoelectronic devices by improving the transport performance of carriers has been a great *** key issues in the research ofⅡ-Ⅵ(CdSe,CdS,CdTe,etc.)andⅣ-Ⅵ(PbSe,PbTe,PbS,etc.)colloidal NCs were summarized,including synthesis strategy,morphology/size adjustment,surface ligand design,improvement of conductivity and their optoelectronic *** influence of surface ligands on the stability and dispersion of NCs was firstly introduced,and then strategies of improving electrical conductivity of NCs were discussed,such as ligands exchange,doping,self-assembly and plasmons,which provided a good foundation for the subsequent preparation of optoelectronic *** future development direction of NCs optoelectronic devices is expounded from the aspects of materials composition,comprehensive preparation and flexible processing of colloidal NCs.

关键词： Colloidal nanocrystal Surface engineering Conductivity Photoelectronic device

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Astronomical relativistic reference systems with multipolar expansion: the global one

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Research in Astronomy and Astrophysics 2014年第9期14卷 1193-1200页

作者： yi xie School of Astronomy & Space Science Nanjing University Key Laboratory of Modern Astronomy and Astrophysics Nanjing University Ministry of Education

With the rapid development of techniques for astronomical observations, the precision of measurements has been significantly increasing. Theories describing astronomical relativistic reference systems, which are the foundation for processing and interpreting these data now and in the future, may require extensions to satisfy the needs of these trends. Besides building a framework compatible with alternative theories of gravity and the pursuit of higher order post-Newtonian approximation, it will also be necessary to make the first order post-Newtonian multipole moments of celestial bodies be explicitly expressed in the astronomical relativistic reference systems. This will bring some convenience into modeling the observations and experiments and make it easier to distinguish different contributions in measurements. As a first step, the global solar system reference system is expressed as a multipolar expansion and the post-Newtonian mass and spin moments are shown explicitly in the metric which describes the coordinates of the system. The full expression of the global metric is given.

关键词： reference systems -- gravitation

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光谱辐射照度国际关键比对装置、方法与结果分析

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光谱学与光谱分析 2025年第1期45卷 1-7页

作者：代彩红王彦飞李玲吴志峰谢一航中国计量科学研究院光学与激光计量科学研究所北京100029

基于高温黑体辐射源和双光栅光谱辐射比较测量系统,中国计量科学研究院自主研制了新一代光谱辐射照度国家基准装置,波长范围覆盖230~2550 nm,以一组稳定的卤钨灯作为副基准灯组,保存和传递光谱辐射照度量值。黑体的温度溯源至铂-碳Pt-C... 详细信息

基于高温黑体辐射源和双光栅光谱辐射比较测量系统,中国计量科学研究院自主研制了新一代光谱辐射照度国家基准装置,波长范围覆盖230~2550 nm,以一组稳定的卤钨灯作为副基准灯组,保存和传递光谱辐射照度量值。黑体的温度溯源至铂-碳Pt-C和铼-碳Re-C共晶点黑体,在3021 K采用钨碳-碳WC-C共晶点黑体进行验证。采用新基准装置,2017年-2019年NIM参加国际计量局组织的光谱辐射照度国际关键比对CCPR-K1.a,比对由全俄光学物理学测量研究院(VNIIOFI)主导,共有12个实验室参加。比对结果表明:除少数实验室外,在250~290、300~1300、1500~2500 nm波长范围,各参比实验室之间的一致性分别为±2.0%、±1.0%和±2.0%。在紫外、可见和近红外波段,NIM与国际比对参考值的平均相对偏差分别为0.13%、0.28%和0.15%。在250~2500 nm全波段,NIM与国际比对参考值的平均相对偏差为0.17%,与2004年平均相对偏差0.9%相比,测量能力提升显著。

关键词：光谱辐射照度国际比对高温黑体测量不确定度国家基准

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