检索结果-内蒙古大学图书馆

Simultaneous creation of multiple vortex-antivortex pairs in momentum space in photonic lattices

Advanced Photonics 2023年第6期5卷 92-100页

作者： Feng Li Sergei V.Koniakhin Anton V.Nalitov Evgeniia Cherotchenko Dmitry D.Solnyshkov Guillaume Malpuech Min Xiao Yanpeng Zhang Zhaoyang Zhang Xi'an Jiaotong University Key Laboratory for Physical Electronics and Devices of the Ministry of EducationShaanxi Key Laboratory of Information Photonic TechniqueSchool of Electronic Science and EngineeringFaculty of Electronics and InformationXi’anChina Institute for Basic Science Center for Theoretical Physics of Complex SystemsDaejeonRepublic of Korea Korea University of Science and Technology(UST) Basic Science ProgramDaejeonRepublic of Korea Moscow Institute of Physics and Technology DolgoprudnyiRussia University of Wolverhampton Faculty of Science and EngineeringWolverhamptonUnited Kingdom ITMO University St.PetersburgRussia Ioffe Institute St.PetersburgRussia UniversitéClermont Auvergne Institut PascalPHOTON-N2CNRSClermont INPClermont-FerrandFrance Institut Universitaire de France ParisFrance University of Arkansas Department of PhysicsFayettevilleArkansasUnited States Nanjing University School of PhysicsNational Laboratory of Solid State MicrostructuresNanjingChina

engineering of the orbital angular momentum(OAM)of light due to interaction with photonic lattices reveals rich physics and motivates potential *** report the experimental creation of regularly distributed quantized vortex arrays in momentum space by probing the honeycomb and hexagonal photonic lattices with a single focused Gaussian *** the honeycomb lattice,the vortices are associated with Dirac ***,we show that the resulting spatial patterns of vortices are strongly defined by the symmetry of the wave packet evolving in the photonic lattices and not by their topological *** findings reveal the underlying physics by connecting the symmetry and OAM conversion and provide a simple and efficient method to create regularly distributed multiple vortices from unstructured light.

关键词： vortex photonic lattice orbital angular momentum topology symmetry

来源：评论

学校读者我要写书评

暂无评论

Electronic structure and surface band bending of Sn-doped β−Ga2O3 thin films studied by x-ray photoemission spectroscopy and ab initio calculations

引用

Physical Review B 2024年第11期110卷 115120页

作者： Jiaye Zhang Zhenni Yang Siliang Kuang Ziqi Zhang Shenglong Wei Joe Willis Tien-Lin Lee Piero Mazzolini Oliver Bierwagen Shanquan Chen Zuhuang Chen Duanyang Chen Hongji Qi David Scanlon Kelvin H. L. Zhang State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Hangzhou Institute of Optics and Fine Mechanics Hangzhou 311421 People's Republic of China Department of Chemistry Harwell Science and Innovation Campus Didcot OX11 0DE United Kingdom Department of Mathematical Physical and Computer Sciences Leibniz-Institut im Forschungsverbund Berlin e.V. Hausvogteiplatz 5-7 10117 Berlin Germany School of Materials Science and Engineering Key Laboratory of Materials for High Power Laser and Research Center of Laser Crystal School of Chemistry The University of Birmingham Edgbaston Birmingham B15 2TT United Kingdom

The bulk and surface electronic structures of Sn-doped β−Ga2O3 thin films have been studied by soft and hard x-ray photoemission spectroscopy (soft PES at 1486.6 eV and HAXPES at 5920 eV). The experimental spectra are compared with density functional theory calculated density of states in the valence band and conduction band. Excellent agreement was found between experimental spectra and calculated density of states by taking into account the photoionization cross section of different orbitals involved in the valence and conduction bands. The electronic states derived from Ga 4s character are selectively enhanced by HAXPES. This allows us to infer that the states at the conduction band and bottom of the valence band contain pronounced Ga 4s character. The occupation of the lower conduction band in degenerately Sn-doped Ga2O3 is clearly observed by HAXPES, which allows for direct measurement of Burstein-Moss shift and band-gap renormalization as a function of Sn doping. A comparison of the valence band spectra of Sn-doped Ga2O3 films with Si-doped samples suggests that Sn doping has different effects on the electronic structure than Si doping. An in-gap electronic state is observed for Sn-doped Ga2O3, which is attributed to self-compensating Sn2+ related defects. Furthermore, a larger band-gap renormalization is found in Sn-doped samples, because the Sn 5s dopant orbital mixes strongly with the host Ga 4s derived conduction band. Finally, a comparison of the valence band and core-level spectra excited with soft and hard x rays allows us to identify an upward band bending at the surface region of Sn-doped Ga2O3 films.

关键词： Doping effects Electronic structure Surface states Doped semiconductors Thin films Wide band gap systems Ab initio calculations Density functional calculations Laser ablation Photoemission spectroscopy

来源：评论

学校读者我要写书评

暂无评论

Boosting the Electrochemical Performance of Li-and Mn-Rich Cathodes by a Three-in-One Strategy

引用

Nano-Micro Letters 2021年第12期13卷 311-321页

作者： Wei He Fangjun Ye Jie Lin Qian Wang Qingshui Xie Fei Pei Chenying Zhang Pengfei Liu Xiuwan Li Laisen Wang Baihua Qu Dong-Liang Peng State Key Lab of Physical Chemistry of Solid Surface Collaborative Innovation Center of Chemistry for Energy MaterialsCollege of Materials and Pen-Tung Sah Institute of Micro-Nano Science and TechnologyXiamen UniversityXiamen 361005People’s Republic of China College of Chemistry and Chemical Engineering Xiamen UniversityXiamen 361005People’s Republic of China Zhengzhou Key Laboratory of Big Data Analysis and Application Henan Academy of Big DataZhengzhou UniversityZhengzhou 450002People’s Republic of China Fujian Provincial Key Laboratory of Light Propagation and Transformation College of Information Science and EngineeringHuaqiao UniversityXiamen 361021People’s Republic of China Shenzhen Research Institute of Xiamen University Shenzhen 518000People’s Republic of China

There are plenty of issues need to be solved before the practi-cal application of Li-and Mn-rich cathodes,including the detrimental voltage decay and mediocre rate capability,*** doping can e ectively solve the above problems,but cause the loss of *** introduction of appropriate defects can compensate the capacity loss;however,it will lead to structural mismatch and stress ***,a three-in-one method that combines cation–polyanion co-doping,defect construction,and stress engineering is *** co-doped Na^(+)/SO_(4)^(2-)can stabilize the layer framework and enhance the capacity and voltage *** induced defects would activate more reac-tion sites and promote the electrochemical ***,the unique alternately distributed defect bands and crystal bands structure can alleviate the stress accumulation caused by changes of cell parameters upon ***,the modified sample retains a capacity of 273 mAh g^(-1)with a high-capacity retention of 94.1%after 100 cycles at 0.2 C,and 152 mAh g^(-1)after 1000 cycles at 2 C,the corresponding voltage attenuation is less than 0.907 mV per cycle.

关键词： Li-and Mn-rich cathodes Cation–polyanion co-doping Defect and stress engineering Good structure stability Electrochemical performance

来源：评论

学校读者我要写书评

暂无评论

Dynamic and reversible electrowetting with low voltage on the dimethicone infused carbon nanotube array in air

引用

Chinese Chemical Letters 2020年第7期31卷 1914-1918页

作者： Miao Wang Lei Zhou Yaqi Hou Wen He Wei Liu Feng Wu Xu Hou Research Institute for Biomimetics and Soft Matter Fujian Provincial Key Laboratory for Soft Functional Materials ResearchJiujiang Research InstituteCollege of Physical Science and TechnologyXiamen UniversityXiamen 361005China State Key Laboratory of Physical Chemistry of Solid Surfaces Collaborative Innovation Center of Chemistry for Energy MaterialsCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China

Unremitting efforts have been intensively making for pursuing the goal of the reversible transition of electrowetting owing to its vital importance to many practical applications,but which remains a major challenge for carbon nanotubes due to the irreversible electrochemical ***,we proposed a subtly method to prevent the CNT array from electrochemical damage by using liquid medium instead of air medium to form a liquid/liquid/solid triphase *** dimethicone dynamically refills in CNT arrays after removing of voltage that makes the surface back to hydrophobic,which is an elegant way to not only decrease energy dissipation in electrowetting process but also obtain extra energy in reversible dewetting *** cycles of in situ experiments showed that more than four reversible electrowetting cycles could be achieved in *** wo rth mention that the in situ reve rsible electro wetting voltage of the dimethicone infused CNT array has been lowered to 2 V from 7 V which is the electrowetting voltage for the pure CNT *** surface of the dimethicone infused CNT array can maintain hydrophobicity with a contact angle of 145.6°after four cycles,compared with 148.1°of the initial ***,a novel perspective of theoretical simulations through the binding energy has been provided which proved that the charged CNTs preferred binding with water molecules thereby replacing the dimethicone molecules adsorbed on the CNTs,whereas reconnected with dimethicone after removing the *** study provides distinct insight into dynamic reversible electrowetting on the nanostructured surface in air and supplies a way for precise control of wettability in surface chemistry,smart phase-change heat transfer enhancement,liquid lenses,microfluidics,and other chemical engineering applications.

关键词： Carbon nanotube array Electrowetting Reversible Dynamic Low voltage

来源：评论

学校读者我要写书评

暂无评论

The rise of intelligent fabric agent from mass-produced advanced fiber materials

引用

science Bulletin 2024年第23期69卷 3644-3647页

作者： Pan Li Maiping Yang Yueheng Liu Jing Zhang Sisi He Cuiwei Yang Weizhong Yang Xinyuan Cai Liping Zhu Shenglin Ye Hongyu Sun Chong Hou Ning Zhou Meifang Zhu Guangming Tao Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China School of Mechanical Engineering and Electronic Information China University of Geosciences(Wuhan)Wuhan 430074China Shenzhen Key Laboratory of Flexible Printed Electronics Technology School of ScienceHarbin Institute of TechnologyShenzhen 518055China Department of Biomedical Engineering School of Information Science and TechnologyFudan UniversityShanghai 200433China Shanghai Different Advanced Material Co. Ltd.Shanghai 201502China School of Architecture and Urban Planning Huazhong University of Science and TechnologyWuhan 430074China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620China Meta Reality Lab Meta PlatformsInc.SunnyvaleCA 94089USA School of Nursing Peking UniversityBeijing 100191China School of Optical and Electronic Information Huazhong University of Science and TechnologyWuhan 430074China Department of Cardiology Beijing Anzhen HospitalCapital Medical UniversityNational Clinical Research Center for Cardiovascular DiseasesBeijing 100029China Key Laboratory of Vascular Aging Ministry of EducationTongji Hospital Tongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China State Key Laboratory of Material Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China School of Physical Education Huazhong University of Science and TechnologyWuhan 430074China

Artificial intelligence(AI)is crucial in driving scientific,technological,and industrial advancements,and it has given rise to an ambient intelligence that can potentially improve the physical execution of healthcare delivery[1,2].Among diverse advanced AI technologies,an intelligent agent with multi-parameter perception,decision-making,and execution capabilities demonstrates the potential for facilitating the development of next-generation optoelectronic *** intelligent agent is a physical or abstract entity that acts autonomously,perceives and interacts with its environment,and communicates with other agents[3].It could perceive dynamic environmental conditions,execute actions,and make appropriate *** emerges as an ideal carrier for human-centered intelligent agents,providing various properties such as perceptibility,adaptability,and *** fabric,known for its unique functionality,has attracted considerable attention from academia and *** 2014,Germany proposed a national strategy called FutureTEX to upgrade the entire textile industry by promoting integration between textiles and other *** years later,the United states announced the establishment of the Revolutionary Fibers and Textiles Manufacturing Innovation Institute,which intends to accelerate the revival of fabric *** with conventional fibers,revolutionary fibers focus on the design of multiple materials and structures,enabling the integration of various functionalities into a single *** in the United states,the advent of the digital revolution,advancements in Internet of Things technology,and mature fiber technology significantly boost the development of the intelligent fiber *** commercial applications of intelligent fibers are gradually *** Jacquard,a collaborative effort by Google and Levi’s,presents an intelligent jacket that combines the washability and texture of standard fabrics with the

关键词： agent execution fiber

来源：评论

学校读者我要写书评

暂无评论

Effective potential engineering by emergent anisotropy in a tunable open-access microcavity

arXiv

引用

arXiv 2023年

作者： Li, Yiming Luo, Xiaoxuan Guo, Yaxin Ren, Jiahuan Long, Teng Wang, Bohao Cai, Yin Guo, Chaowei Qin, Yuanbin Fu, Hongbing Zhang, Yanpeng Yun, Feng Liao, Qing Li, Feng Key Laboratory for Physical Electronics and Devices of The Ministry of Education Shaanxi Key Lab of Information Photonic Technique School of Electronic Science and Engineering Faculty of Electronic and Information Engineering Xi’an Jiaotong University Xi’an710049 China Beijing Key Laboratory for Optical Materials and Photonic Devices Department of Chemistry Capital Normal University Beijing100048 China State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong University Xi’an710049 China Solid-State Lighting Engineering Research Center Xi’an Jiaotong University Xi’an710049 China School of Physical Science and Technology Hebei University Hebei Baoding071000 China

Photonic spin-orbit (SO) coupling is an important physical mechanism leading to numerous interesting phenomena in the systems of microcavity photons and exciton-polaritons. We report the effect of SO coupling in a tunable open-access microcavity embedded with anisotropic active media. The SO coupling associated with the TE-TM splitting results in an emergent anisotropy, which further leads to fine energy splittings allowing clear observation of the full set of eigenstates, in sharp contrast with the isotropic situation which leads to the isotropic eigenstates of spin vortices. We show that the photonic potential can be engineered by playing with the relation between the emergent anisotropy and the cavity ellipticity. All the experimental results are well reproduced by the degenerate perturbation theory. Our results constitute a significant extension to the research field of microcavity spinoptronics, with potential applications in polarization control and optical property measurement of photonic devices and materials. © 2023, CC BY.

关键词： Microcavities

来源：评论

学校读者我要写书评

暂无评论

Water Induced Ferroelectric Switching: The Crucial Role of Collective Dynamics

arXiv

引用

arXiv 2023年

作者： Aslam, Muhammad Awais Stankovic, Igor Murastov, Gennadiy Carl, Amy Song, Zehao Watanabe, Kenji Taniguchi, Takashi Lugstein, Alois Teichert, Christian Gorbachev, Roman Rodriguez, Raul D. Matković, Aleksandar Department Physics Mechanical Engineering and Electrical Engineering Montanuniversität Leoben Franz Josef Strasse 18 Leoben8700 Austria Scientific Computing Laboratory Center for the Study of Complex Systems Institute of Physics Belgrade University of Belgrade Belgrade11080 Serbia Department of Physics and Astronomy National Graphene Institute University of Manchester Manchester United Kingdom Institute of Solid State Electronics TU Wien Gußhausstraße 25-25a Vienna1040 Austria Research Center for Electronic and Optical Materials National Institute for Materials Science 1- 1 Namiki Tsukuba305-0044 Japan Research Center for Materials Nanoarchitectonics National Institute for Materials Science 1-1 Namiki Tsukuba305-0044 Japan Tomsk Polytechnic University Lenina ave. 30 Tomsk634034 Russia

The interaction mechanisms of water with nanoscale geometries remain poorly understood. This study focuses on behaviour of water clusters under varying external electric fields with a particular focus on molecular ferroelectric devices. We employ a two-fold approach, combining experiments with large-scale molecular dynamics simulations on graphene nanoribbon field effect transistors. We show that bilayer graphene nanoribbons provide stable anchoring of water clusters on the oxygenated edges, resulting in a ferroelectric effect. A molecular dynamics model is then used to investigate water cluster behaviour under varying external electric fields. Finally, we show that these nanoribbons exhibit significant and persistent remanent fields that can be employed in ferroelectric heterostructures and neuromorphic circuits. © 2023, CC BY.

关键词： Nanoribbons

来源：评论

学校读者我要写书评

暂无评论

Manipulation of Molecular Qubits by Isotope Effect on Spin Dynamics

引用

CCS Chemistry 2021年第9期3卷 2548-2556页

作者： Jing Li Shi-Jie Xiong Chun Li Biaobing Jin Yi-Quan Zhang Shang-Da Jiang Zhong-Wen Ouyang Zhenxing Wang Xing-Long Wu Johan van Tol You Song State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023 National Laboratory of Solid State Microstructures Department of PhysicsNanjing UniversityNanjing 210093 Research Institute of Superconductor Electronics(RISE) School of Electronic Science and EngineeringNanjing UniversityNanjing 210093 Jiangsu Key Laboratory for NSLSCS School of Physical Science and TechnologyNanjing Normal UniversityNanjing 210023 National Laboratory for Molecular Sciences State Key Laboratory of Rare Earth Materials Chemistry and ApplicationsBeijing Key Laboratory for Magnetoelectric Materials and DevicesCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871 Wuhan National High Magnetic Field Center&School of Physics Huazhong University of Science and TechnologyWuhan 430074 National High Magnetic Field Laboratory Florida State UniversityTallahasseeFL 32310

Controlling spin behavior via external stimuli is a key route to develop molecular spintronics ***,temperature,pressure,chemicals,and electric field are the possible ***,we report a new method,the isotope effect,to control spin behavior in molecule magnet *** can not only control the relaxation of magnetization,but also regulate the spin lifetime of quantum coherence.

关键词： molecule-based magnetism molecular qubits isotope effect spin–vibration coupling quantum coherence

来源：评论

学校读者我要写书评

暂无评论

P2-type layered high-entropy oxides as sodium-ion cathode materials

引用

materials Futures 2022年第3期1卷 171-184页

作者： Junbo Wang Sören L Dreyer Kai Wang Ziming Ding Thomas Diemant Guruprakash Karkera Yanjiao Ma Abhishek Sarkar Bei Zhou Mikhail V Gorbunov Ahmad Omar Daria Mikhailova Volker Presser Maximilian Fichtner Horst Hahn Torsten Brezesinski Ben Breitung Qingsong Wang Institute of Nanotechnology Karlsruhe Institute of Technology(KIT)Hermann-von-Helmholtz-Platz 176344 Eggenstein-LeopoldshafenGermany Helmholtz Institute Ulm(HIU)Electrochemical Energy Storage Helmholtzstrasse 1189081 UlmGermany Joint Research Laboratory Nanomaterials-Technische Universität Darmstadt and Karlsruhe Institute of Technology(KIT) Otto-Berndt-Strasse 364206 DarmstadtGermany Leibniz Institute for Solid State and Materials Research(IFW)Dresden Helmholtzstrasse 2001069 DresdenGermany INM-Leibniz Institute for New Materials Campus D2266123 SaarbrückenGermany Department for Materials Science and Engineering Saarland UniversityCampus D2266123 SaarbrückenGermany Saarene Saarland Center for Energy Materials and SustainabilityCampus C4266123 SaarbrückenGermany Bavarian Center for Battery Technology(BayBatt) University of BayreuthUniversitätsstrasse 3095447 BayreuthGermany Department of Chemistry University of BayreuthUniversitätsstrasse 3095447 BayreuthGermany

P2-type layered oxides with the general Na-deficient composition Na_(x)TMO_(2)(x<1,TM:transition metal)are a promising class of cathode materials for sodium-ion *** open Na+transport pathways present in the structure lead to low diffusion barriers and enable high charge/discharge ***,a phase transition from P2 to O2 structure occurring above 4.2 V and metal dissolution at low potentials upon discharge results in rapid capacity *** this work,we demonstrate the positive effect of configurational entropy on the stability of the crystal structure during battery *** different compositions of layered P2-type oxides were synthesized by solid-state chemistry,Na_(0.67)(Mn_(0.55)Ni_(0.21)Co_(0.24))O_(2),Na_(0.67)(Mn_(0.45)Ni_(0.18)Co_(0.24)Ti_(0.1)Mg_(0.03))O_(2) and Na_(0.67)(Mn_(0.45)Ni_(0.18)Co_(0.18)Ti_(0.1)Mg_(0.03)Al_(0.04)Fe_(0.02))O_(2) with low,medium and high configurational entropy,*** high-entropy cathode material shows lower structural transformation and Mn dissolution upon cycling in a wide voltage range from 1.5 to 4.6 *** operando techniques and post-mortem analysis were used to probe the underlying reaction mechanism ***,the high-entropy strategy is a promising route for improving the electrochemical performance of P2 layered oxide cathodes for advanced sodium-ion battery applications.

关键词： P2-type layered cathode high-entropy oxides sodium-ion battery gassing behavior manganese leaching

来源：评论

学校读者我要写书评

暂无评论

Solvent-Free Synthesis of Pd-Modified Zeolitic Imidazolate Framework Nanocomposites for Competitive Arylation and Carbon–Carbon Coupling Reactions

引用

Applied Organometallic Chemistry 2025年第6期39卷

作者： Anbari, Alireza Pourvahabi Ranjbari, Alireza Kashif, Muhammad Delcheh, Shima Rahmdel Siddhartha, Tatwadhika Rangin Zhuiykov, Serge Heynderickx, Philippe M. Verpoort, Francis Center for Green Chemistry and Environmental Biotechnology Ghent University Global Campus Incheon Korea Republic of Department of Chemistry Faculty of Science Ghent University Ghent Belgium Department of Green Chemistry and Technology Faculty of Bioscience Engineering Ghent University Ghent Belgium State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan China Department of Solid-State Sciences Faculty of Science Ghent University Ghent Belgium Research School of Chemistry & Applied Biomedical Studies National Research Tomsk Polytechnic University Tomsk Russia Moscow Russia

Over an extended period, identifying effective approaches for achieving versatile arylations has presented a notable synthetic challenge. In our research, we have successfully fabricated nanocomposites of zeolitic imidazole frameworks, specifically Pd-ZIF-8 and Pd-ZIF-67, using an in situ thermal (IST) approach. These compounds have exhibited high catalytic activity as heterogeneous catalysts in carbon–carbon coupling processes mediated by palladium, such as the Suzuki–Miyaura reaction (which involves aryl halides and aryl boronic acids) and the Mizoroki–Heck reaction (which involves aryl halides and olefins). In comparison to previously published research, the IST technique has a number of benefits;these features include the removal of solvents and additives, a low reaction temperature, a single-step process, no need for activation, and the use of the smallest possible precursor ratio (M/L). This accomplishment was realized through the precise control of ligands and additives. © 2025 John Wiley & Sons Ltd.

关键词： Nanocatalysts

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：