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Light(science & Applications) 2024年第8期13卷 1623-1630页

作者： Guo-Jing Tang Xiao-Dong Chen Lu sun Chao-Heng Guo Meng-Yu Li Zhong-Tao Tian hou-Hong Chen Hong-Wei wang Qi-Yao sun Ying-Di pan Xin-Tao He Yi-Kai Su Jian-Wen Dong school of physics&State Key Laboratory of Optoelectronic Materials and Technologies Sun Yat-sen UniversityGuangzhou 510275China State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronic EngineeringShanghai Jiao Tong UniversityShanghai 200240China

3-dB couplers,which are commonly used in photonic integrated circuits for on-chip information processing,precision measurement,and quantum computing,face challenges in achieving robust performance due to their limited 3-dB bandwidths and sensitivity to fabrication *** address this,we introduce topological physics to nanophotonics,developing a framework for topological 3-dB *** couplers exhibit broad working wavelength range and robustness against fabrication dimensional *** leveraging valley-Hall topology and mirror symmetry,the photonic-crystal-slab couplers achieve ideal 3-dB splitting characterized by a wavelength-insensitive scattering *** analysis confirms the superiority on broad bandwidth of 48 nm and robust splitting against dimensional errors of 20 *** further propose a topological interferometer for on-chip distance measurement,which also exhibits robustness against dimensional *** extension of topological principles to the fields of interferometers,may open up new possibilities for constructing robust wavelength division multiplexing,temperature-drift-insensitive sensing,and optical coherence tomography applications.

关键词： topological splitting insensitive

Multiplexed manipulation of orbital angular momentum and wavelength in metasurfaces based on arbitrary complex-amplitude control

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Light(science & Applications) 2024年第5期13卷 930-940页

作者： guoli He Yaqin Zheng Changda Zhou Siyang Li Zhonghong Shi Yanhui Deng Zhang-Kai Zhou State Key Laboratory of Optoelectronic Materials and Technologies School of PhysicsSun Yat-sen UniversityGuangzhou 510275China

Due to its unbounded and orthogonal modes,the orbital angular momentum(OAM)is regarded as a key optical degree of freedom(DoF)for future information processing with ultra-high capacity and *** the manipulation of OAM based on metasurfaces has brought about great achievements in various fields,such manipulation currently remains at single-DoF level,which means the multiplexed manipulation of OAM with other optical DoFs is still lacking,greatly hampering the application of OAM beams and advancement of *** order to overcome this challenge,we propose the idea of multiplexed coherent pixel(MCp)for *** approach enables the manipulation of arbitrary complex-amplitude under incident lights of both plane and OAM waves,on the basis of which we have realized the multiplexed DoF control of OAM and *** a result,the MCp method expands the types of incident lights which can be simultaneously responded by metasurfaces,enriches the information processing capability of metasurfaces,and creates applications of information encryption and OAM *** findings not only provide means for the design of high-security and high-capacity metasurfaces,but also raise the control and application level of OAM,offering great potential for multifunctional nanophotonic devices in the future.

关键词： momentum offering overcome

Ill-conditioned stable inversion arising from singularly perturbed zero dynamics

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控制理论与应用（英文版） 2008年第4期6卷 385-391页

作者： Xuemei GUO guoli wang school of information science and technology Sun Yat-Sen University Guangzhou Guangdong 510275 China

The ill-conditioned stable inversion is studied for slightly nonminimum phase systems whose zero dynam- ics is singularly perturbed, that is, the relative degree is ill-defined. For these systems, we show that there exists an inherent limitation in the bandwidth of a reference trajectory to be tracked when a well-conditioned feedforward input via stable inversion is sought. We assert that, when the violation of this limitation occurs, the so-called reference trajectory redesign is called for. Our analysis results can provide an explicit assessment as well as useful guidance for the reference trajectory redesign if needed.

关键词： Nonminimum phase Ill-defined relative degree Stable inversion Singularly perturbed zero dynamics

Evidence for particle acceleration approaching peV energies in the W51 complex

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science Bulletin 2024年第18期69卷 2833-2841页

作者： LHAASO Collaboration Zhen Cao F.Aharonian Axikegu Y.X.Bai Y.W.Bao D.Bastieri X.J.Bi Y.J.Bi W.Bian A.V.Bukevich Q.Cao W.Y.Cao Zhe Cao J.Chang J.F.Chang A.M.Chen E.S.Chen H.X.Chen Liang Chen Lin Chen Long Chen M.J.Chen M.L.Chen Q.H.Chen S.Chen S.H.Chen S.Z.Chen T.L.Chen Y.Chen N.Cheng Y.D.Cheng M.Y.Cui S.W.Cui X.H.Cui Y.D.Cui B.Z.Dai H.L.Dai Z.G.Dai Danzengluobu X.Q.Dong K.K.Duan J.H.Fan Y.Z.Fan J.Fang J.H.Fang K.Fang C.F.Feng H.Feng L.Feng S.H.Feng X.T.Feng Y.Feng Y.L.Feng S.Gabici B.Gao C.D.Gao Q.Gao W.Gao W.K.Gao M.M.Ge L.S.Geng G.Giacinti G.H.Gong Q.B.Gou M.H.Gu F.L.Guo X.L.Guo Y.Q.Guo Y.Y.Guo Y.A.Han M.Hasan H.H.He H.N.He J.Y.He Y.He Y.K.Hor B.W.hou C.hou X.hou H.B.Hu Q.Hu S.C.Hu D.H.Huang T.Q.Huang W.J.Huang X.T.Huang X.Y.Huang Y.Huang X.L.Ji H.Y.Jia K.Jia K.Jiang X.W.Jiang Z.J.Jiang M.Jin M.M.Kang I.Karpikov D.Kuleshov K.Kurinov B.B.Li C.M.Li Cheng Li Cong Li D.Li F.Li H.B.Li H.C.Li Jian Li Jie Li K.Li S.D.Li W.L.Li W.L.Li X.r.Li Xin Li Y.Z.Li Zhe Li Zhuo Li E.W.Liang Y.F.Liang S.J.Lin B.Liu C.Liu D.Liu D.B.Liu H.Liu H.D.Liu J.Liu J.L.Liu M.Y.Liu r.Y.Liu S.M.Liu W.Liu Y.Liu Y.N.Liu Q.Luo Y.Luo H.K.Lv B.Q.Ma L.L.Ma X.H.Ma J.r.Mao Z.Min W.Mitthumsiri H.J.Mu Y.C.Nan A.Neronov L.J.Ou p.pattarakijwanich Z.Y.pei J.C.Qi M.Y.Qi B.Q.Qiao J.J.Qin A.raza D.ruffolo A.Sáiz M.Saeed D.Semikoz L.Shao O.Shchegolev X.D.Sheng F.W.Shu H.C.Song Yu.V.Stenkin V.Stepanov Y.Su D.X.sun Q.N.sun X.N.sun Z.B.sun J.Takata p.H.T.Tam Q.W.Tang r.Tang Z.B.Tang W.W.Tian C.wang C.B.wang G.W.wang H.G.wang H.H.wang J.C.wang Kai wang Kai wang L.p.wang L.Y.wang p.H.wang r.wang W.wang X.G.wang X.Y.wang Y.wang Y.D.wang Y.J.wang Z.H.wang Z.X.wang Zhen wang Zheng wang D.M.Wei J.J.Wei Y.J.Wei T.Wen C.Y.Wu H.r.Wu Q.W.Wu S.Wu X.F.Wu Y.S.Wu S.Q.Xi J.Xia G.M.Xiang D.X.Xiao G.Xiao Y.L.Xin Y.Xing D.r.Xiong Z.Xiong D.L.Xu r.F.Xu r.X.Xu W.L.Xu L.Xue D.H.Yan J.Z.Yan T.Yan C.W.Yang C.Y.Yang F.Yang F.F.Yang L.L.Yang M.J.Yang r.Z.Yang W.X.Yang Y.H.Yao Z.G.Yao L.Q.Yin N.Yin X.H.You Z.Y.You Y.H.Yu Q.Yuan H.Yue H.D.Zeng T.X.Zeng W.Zeng M.Zha B.B.Zhang F.Zhang H.Zhang 不详 Key Laboratory of particle Astrophysics&Experimental physics Division&Computing Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China university of Chinese Academy of sciences Beijing 100049China TIANFU Cosmic ray research Center ChengduChina Dublin Institute for Advanced Studies 31 Fitzwilliam Place2 DublinIreland Max-planck-Institut for Nuclear physics P.O.Box 103980Heidelberg 69029Germany school of physical science and technology&school of information science and technology Southwest Jiaotong UniversityChengdu 610031China school of Astronomy and Space science Nanjing UniversityNanjing 210023China Center for Astrophysics Guangzhou UniversityGuangzhou 510006China Tsung-Dao Lee Institute&school of physics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China Institute for Nuclear research of russian Academy of sciences Moscow 117312Russia Hebei Normal university Shijiazhuang 050024China university of science and technology of china Hefei 230026China State Key Laboratory of particle Detection and Electronics China Key Laboratory of Dark Matter and Space Astronomy&Key Laboratory of radio Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023China research Center for Astronomical Computing Zhejiang LaboratoryHangzhou 311121China Key Laboratory for research in Galaxies and Cosmology Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China school of physics and Astronomy Yunnan UniversityKunming 650091China Key Laboratory of Cosmic rays(Tibet university) Ministry of EducationLhasa 850000China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China school of physics and Astronomy(Zhuhai)&school of physics(guangzhou)&Sino-French Institute of Nuclear Engineering and technology(Zhuhai) Sun Yat-sen UniversityZhuhai 519000&Guangzhou 510275GuangdongChina Institute of Frontier and Interdisciplinary science Shandong UniversityQingdao 266237China ApC UniversitéParis Cité

Theγ-ray emission from the W51 complex is widely acknowledged to be attributed to the interaction between the cosmic rays(Crs)accelerated by the shock of supernova remnant(SNr)W51C and the dense molecular clouds in the adjacent star-forming region,***,the maximum acceleration capability of W51C for Crs remains *** on observations conducted with the Large High Altitude Air Shower Observatory(LHAASO),we report a significant detection ofγrays emanating from the W51 complex,with energies from 2 to 200 *** LHAASO measurements,for the first time,extend theγ-ray emission from the W51 complex beyond 100 TeV and reveal a significant spectrum bending at tens of *** combining the"π^(0)-decay bump"featured data from Fermi-LAT,the broadbandγ-ray spectrum of the W51 region can be well-characterized by a simple pp-collision *** observed spectral bending feature suggests an exponential cutoff at~400 TeV or a power-law break at~200 TeV in the Cr proton spectrum,most likely providing the first evidence of SNrs serving as Cr accelerators approaching the peV ***,two young star clusters within W51B could also be theoretically viable to produce the most energeticγrays observed by *** findings strongly support the presence of extreme Cr accelerators within the W51 complex and provide new insights into the origin of Galactic Crs.

关键词： UHE c-ray Cosmic rays SNr W51C Star clusters

Multifunctional two-dimensional van der Waals Janus magnet Cr-based dichalcogenide halides

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npj Computational Materials 2022年第1期8卷 1126-1131页

作者： Yusheng hou Feng Xue Liang Qiu Zhe wang ruqian Wu Guangdong provincial Key Laboratory of Magnetoelectric physics and Devices Center for Neutron Science and TechnologySchool of PhysicsSun Yat-Sen University510275GuangzhouChina State Key Laboratory of Low-Dimensional Quantum physics Department of PhysicsTsinghua University100084BeijingChina Frontier science Center for Quantum information 100084BeijingChina State Key Laboratory of Surface physics and Key Laboratory for Computational physical sciences(MOE)and Department of physics Fudan University200433ShanghaiChina Department of physics and Astronomy University of CaliforniaIrvineCA92697-4575USA

Two-dimensional van der Waals Janus materials and their heterostructures offer fertile platforms for designing fascinating ***,by means of systematic first-principles studies on van der Waals Janus monolayer Cr-based dichalcogenide halides CrYX (Y = S,Se,Te;X = Cl,Br,I),we find that CrSX (X = Cl,Br,I) are the very desirable high T_(C) ferromagnetic semiconductors with an out-of-plane ***,by the benefit of the large magnetic moments on ligand S^(2−) anions,the sought-after large-gap quantum anomalous Hall effect and sizable valley splitting can be achieved through the magnetic proximity effect in van der Waals heterostructures CrSBr/Bi_(2)Se_(3)/CrSBr and MoTe_(2)/CrSBr,***,we show that large Dzyaloshinskii–Moriya interactions give rise to skyrmion states in CrTeX (X = Cl,Br,I) under external magnetic *** work reveals that two-dimensional Janus magnet Cr-based dichalcogenide halides have appealing multifunctionalities in the applications of topological electronic and valleytronic devices.

关键词： dimensional valley effect

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伯乐型专利的识别及其特征研究

图书情报工作 2024年第6期68卷 104-118页

作者：侯剑华杨秀财姚海玥中山大学信息管理学院广州510006 香港中文大学商学院中国香港999077

[目的/意义]挖掘以“伯乐型专利”为代表的高质量科技成果的形成和演化规律,以促进科技成果的转移与转化,进一步为企业的创新发展提供有力支持。[方法/过程]以中国和美国人工智能领域的专利家族为研究对象,通过构建知识迸发检测模型(KBD... 详细信息

[目的/意义]挖掘以“伯乐型专利”为代表的高质量科技成果的形成和演化规律,以促进科技成果的转移与转化,进一步为企业的创新发展提供有力支持。[方法/过程]以中国和美国人工智能领域的专利家族为研究对象,通过构建知识迸发检测模型(KBDM),寻找善于从海量专利成果中发现、延续和继承高质量专利成果知识的专利。[结果/结论]通过KBDM模型,总计识别29925个伯乐型专利。伯乐型专利的地域分布呈现出全球化的特点。伯乐型专利申请人主体主要为人工智能领域的龙头企业,这些企业具备领先的技术经验和发现潜在高价值专利的能力。研究还发现伯乐型专利具有集聚效应,多个伯乐型专利常常共同发现具有潜在的知识价值,积极地通过协同唤醒整个专利家族的潜力。这突出伯乐型专利在创新生态系统中的重要性,促进了知识的传播。最后研究还发现,家族内的专利被引频次与唤醒专利家族的伯乐型专利数量之间存在正向关系。这一研究为伯乐型专利的特征和作用提供全面的理解,有助于更好地应用专利知识在科技创新和知识传播方面。

关键词：高价值专利专利引证睡美人专利伯乐型专利

A preliminary study on the acoustic properties of seafloor sediment in the southern U-boundary of the South china Sea

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Journal of Oceanology and Limnology 2023年第2期41卷 687-693页

作者： Zhengyu hou Danling TANG Yao XIAO Jingqiang wang Bo ZHANG Xiaoming CUI peng HAO school of Ocean Engineering and technology Sun Yat-sen University&Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai 519000China Southern Marine science and Engineering Guangdong Laboratory(guangzhou) South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 511458China Key Laboratory of Marine Geology and Metallogeny First Institute of OceanographyMinistry of Natural Resources(MNR)Qingdao 266061China Beijing information science&technology university Beijing 100192China Naval research Institute Tianjin 300000China Engineering technology Branch Company of CNOOC Energy technology&Services Limited CNOOC Experimental CenterTianjin 300000China State Key Laboratory of Acoustics Institute of AcousticsChinese Academy of SciencesBeijing 100190China

The acoustic properties of seafloor sediment are essential parameters in the exploration of marine resources,ocean scientific research and ocean *** sediment samples were collected at the southern U-boundary of the South china Sea(SCS),and the acoustic and physical properties were measured in the *** correlation between physical and sound speed ratio(SSr)was discussed,and SSr-physical property empirical regressions in the sunda Shelf were established for the first *** with the northern continental shelf of SCS,the sunda Shelf are mainly silty and sand sediment,and the SSr ranges from 0.9949 to 1.0944,which has higher SSr than the northern continental shelf,implies that the sunda Shelf is a high SSr *** the same kind of sediment has different physical properties,the single physical parameter of sediment cannot fully represent the acoustic properties of sediment,therefore,the multiple parameter prediction model should develop in the future to improve the prediction precision.

关键词： acoustic properties seafloor sediment South china Sea(SCS) U-boundary

Object Localization with Wireless Binary pyroelectric Infrared sensors

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Object Localization with Wireless Binary Pyroelectric Infrar...

基础研究支撑教育、科技、人才“三位一体”发展战略探讨

2013年中国智能自动化学术会议

作者： Baihua Shen guoli wang school of information science and technology Sun Yat-sen UniversityGuangzhouChina school of information Engineering Guangdong University of Technology

A top-view sensing approach is proposed in this paper for infrared radiation object motion detecting and localization with binary pyroelectric infrared *** develop a modulation strategy based on the radial distance and Gray code to obtain the horizontal distance between the sensor node and ***, the field of view of Fresnel lens array in a sensor node is modulated to achieve single degree of freedom spatial partition,and then the localization algorithm is proposed to coordinate multiple sensors nodes to achieve two degrees of freedom spatial *** tracking experiment shows that the method proposed here has the advantages in computational efficiency and high accuracy.

关键词： pyroelectric infrared detector Wireless sensor networks Motion detecting Localization and tracking

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中国科学基金 2024年第2期38卷 238-247页

作者：侯剑华郑碧丽李文婧中山大学信息管理学院广州510006

基础研究是推进教育、科技、人才一体化战略布局的重要抓手和着力点。纵观历史,世界上重要的教育、科技和人才中心的形成都源于基础研究的重大突破及其应用发展。根据科学史中“汤浅现象”的测算原理,世界科学中心、人才中心和高等教育... 详细信息

基础研究是推进教育、科技、人才一体化战略布局的重要抓手和着力点。纵观历史,世界上重要的教育、科技和人才中心的形成都源于基础研究的重大突破及其应用发展。根据科学史中“汤浅现象”的测算原理,世界科学中心、人才中心和高等教育中心基本上是同构的。进入新时代,我国基础研究在推进教育、科技、人才发展的过程中涌现出了新特征和新趋势,面临着新的发展机遇。科学地、有效地认识基础研究发展规律对教育、科技、人才一体战略布局具有重要的现实意义。未来,我国基础研究资助体系的建设,应面向基础研究精细化、体系化,加强战略性基础研究布局;面向科学研究范式的转换期,加强对基础科学及其发展规律的系统认识;面向基础研究的智能化和数字化,优化专家参与和决策机制。

关键词：基础研究教育、科技、人才一体化战略布局世界三大中心转移