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Light(science & Applications) 2019年第1期8卷 732-738页

作者： Michela F.Picardi Martin Neugebauer Jorg s.Eismann Gerd Leuchs Peter Banzer Francisco J.Rodriguez-Fortuno Anatoly V.Zayats department of Physics and london Centre for Nanotechnology King’s College LondonStrandLondon WC2R Ls UK.2Max Planck Institute for the Science of LightStaudtstr.2D-91058 ErlangenGermany Institute of Optics Information and PhotonicsUniversity Erlangen-NurembergStaudtstr.7/B2D-91058 ErlangenGermany

The electromagnetic field scattered by nano-objects contains a broad range of wavevectors and can be efficiently coupled to waveguided *** dominant contribution to scattering from subwavelength dielectric and plasmonic nanoparticles is determined by electric and magnetic dipolar ***,we experimentally demonstrate spectral and phase selective excitation of Janus dipoles,sources with electric and magnetic dipoles oscillating out of phase,in order to control near-field interference and directional coupling to *** show that by controlling the polarisation state of the dipolar excitations and the excitation wavelength to adjust their relative contributions,directionality and coupling strength can be fully ***,we introduce a novel spinning Janus dipole featuring cylindrical symmetry in the near and far field,which results in either omnidirectional coupling or *** the propagation of guided light waves via fast and robust near-field interference between polarisation components of a source is required in many applications in nanophotonics and quantum optics.

关键词： coupling spinning excitation

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基于负载选择的非线性刚度驱动器性能评价

天津大学学报（自然科学与工程技术版） 2018年第11期51卷 1117-1123页

作者：宋智斌赵亚茹高冬戴建生天津大学机械工程学院机构理论和装备设计教育部重点实验室天津300072 伦敦大学国王学院

恒定刚度的串联弹性驱动器(sEA)的控制性能受刚度的限制,存在着系统安全性与带宽之间的矛盾.可变刚度驱动器(VsA)在一定程度上解决了高安全性与高控制带宽之间的矛盾,但其采用的刚度调节电机增加了结构的复杂性.基于"小负载,低刚度;大负... 详细信息

恒定刚度的串联弹性驱动器(sEA)的控制性能受刚度的限制,存在着系统安全性与带宽之间的矛盾.可变刚度驱动器(VsA)在一定程度上解决了高安全性与高控制带宽之间的矛盾,但其采用的刚度调节电机增加了结构的复杂性.基于"小负载,低刚度;大负载,高刚度"的人机交互策略的负载选择的非线性刚度驱动器(LDNsA)是一种新的具有良好应用前景的驱动方案.通过simulink仿真和试验探讨了LDNsA在不同的刚度区间(不同的负载条件)的力矩控制性能,并与不同刚度的sEA的控制性能进行了比较分析.结果表明:与sEA相比,虽然LDNsA的力矩响应平稳性比低刚度的和高刚度sEA差,但LDNsA在负载较小时具有高安全性的同时依然能保证高的控制带宽,而负载较大时,LDNsA的控制带宽更高且力矩响应平稳性能增强.

关键词：非线性刚度柔顺驱动器控制性能仿真试验

Influence of Halide Choice on Formation of Low-Dimensional Perovskite Interlayer in Efficient Perovskite solar Cells

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Energy & Environmental Materials 2022年第2期5卷 670-682页

作者： Xueping Liu Thomas Webb Linjie Dai Kangyu Ji Joel A.smith Rachel C.Kilbride Mozhgan Yavari Jinxin Bi Aobo Ren Yuanyuan Huang Zhuo Wang Yonglong shen Guosheng shao stephen J.sweeney steven Hinder Hui Li David G.Lidzey samuel D.stranks Neil C.Greenham s.Ravi P.silva Wei Zhang state Center for International Cooperation on Designer Low-carbon&Environmental Materials(CDLCEM) Zhengzhou UniversityZhengzhou 450001China Advanced Technology Institute Department of Electrical and Electronic EngineeringUniversity of SurreyGuildford GU27XHUK Cavendish Laboratory University of CambridgeCambridge CB30HEUK department of Chemical engineering and Biotechnology University of CambridgeCambridge CB30ASUK department of Physics and Astronomy University of SheffieldSheffield S37RHUK department of Physics University of OxfordClarendon LaboratoryOxford OX13PUUK Advanced Technology Institute and department of Physics University of SurreyGuildford GU27XHUK The surface Analysis Laboratory Department of Mechanical Engineering SciencesUniversity of SurreyGuildford GU27XHUK Institute of Electrical engineering Chinese Academy of SciencesBeijing 100190China

Recent advances in heterojunction and interfacial engineering of perovskite solar cells(PsCs)have enabled great progress in developing highly efficient and stable ***,the effect of halide choice on the formation mechanism,crystallography,and photoelectric properties of the lowdimensional phase still requires further detailed *** this work,we present key insights into the significance of halide choice when designing passivation strategies comprising large organic spacer salts,clarifying the effect of anions on the formation of quasi-2D/3D *** demonstrate the importance of halide influences,we employ novel neo-pentylammonium halide salts with different halide anions(neoPAX,X=I,Br,or Cl).We find that regardless of halide selection,iodide-based(neoPA)_(2)(FA)_((n-1))PbnI_((3n+1))phases are formed above the perovskite substrate,while the added halide anions diffuse and passivate the perovskite *** addition,we also find the halide choice has an influence on the degree of dimensionality(n).Comparing the three halides,we find that chloride-based salts exhibit superior crystallographic,enhanced carrier transport,and extraction compared to the iodide and bromide *** a result,we report high power conversion efficiency in quasi-2D/3D PsCs,which are optimal when using chloride salts,reaching up to 23.35%,and improving long-term stability.

关键词： carrier dynamics halide anions(I Br Cl) neo-pentylammonium halides perovskite solar cells quasi-2D/3D heterojunction

Effect of Normalizing and Hardening on mechanical Properties of spring

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Journal of Minerals and Materials Characterization and engineering 2012年第8期11卷 832-835页

作者： O. R. Adetunji P. O. Aiyedun s. O. Ismaila M. J. Alao mechanical engineering department College of Engineering Federal University of Agriculture Abeokuta Abeokuta Ogun State Nigeria

This study was carried out to investigate the effect of heat treatment (Normalizing and Hardening) on the mechanical properties of springs. The springs were made from mild steel rod having a diameter of 6 mm, a total of 15 springs were made. The springs were then subjected to various heat treatment processes which included;normalizing, hardening and tempering. The heat treated springs were then subjected to various test in other to determine their mechanical properties, these included;impact toughness test, hardness test and tension test. The normalized spring had more strength, was harder and was much tougher than both the annealed and as received springs. The water quenched springs were the hardest of all the heat treated springs, were very brittle and had the lowest percentage elongation. Their strength was also lower than that of the normalized and as received springs. The water quenched and tempered springs had better mechanical properties required for spring making, they had the optimum combination of hardness, strength and toughness when compared with the other heat treated springs.

关键词： Normalizing Hardening Tempering Impact Toughness Tension spring

Growth and Characterization of Dichloro Tris(Triphenyl Phosphine Oxide)Cadmium(II) —second Harmonic Generation from a Centrosymmetric Crystal

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Journal of Minerals and Materials Characterization and engineering 2013年第1期1卷 20-23页

作者： K. sreevani K. Thangaraj K. Ramamurthi s. selvanayagam B. sridhar V. V. Anierudhe Crystal Growth and Thin Film Laboratory School of Physics Bharathidasan University Tiruchirappalli India department of Physics K. S. R College of Engineering Tiruchengode India department of Physics Kalasalingam University Krishnan Koil India department of Physics Kongu Engineering College Perundurai India Laboratory of X-Ray Crystallography Indian Institute of Chemical Technology Hyderabad India Vidyaa Vikas Educational Institutions Tiruchengode India

The title compound dichloro tris(triphenyl phosphine oxide)cadmium(II) were grown by slow cooling method from aqueous solution. The title compound was synthesized and purified by repeated crystallization process. Grown crystals were characterized by X-ray diffraction and FTIR analysis. The range of optical transmission was determined by recording UV-Vis-NIR spectrum. Thermal properties were investigated by DTA and TGA analyses. Its mechanical hardness was estimated by Vickers microhardness method.

关键词： Crystal Growth single Crystal X-Ray Diffraction Ultraviolet spectra Nonlinear Optical Crystals

Crystal Growth, Thermal, mechanical and Optical Properties of a New Organic Nonlinear Optical Material: Ethyl P-Dimethylamino Benzoate (EDMAB)

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Journal of Minerals and Materials Characterization and engineering 2011年第1期10卷 1-11页

作者： V. Natarajan J. Kalyana sundar P. selvarajan M. Arivanandhan K. sankaranarayanand s. Natarajan Y. Hayakawa department of Physics Aditanar College of Arts and Science Tiruchendur India Research Institute of Electronics Shizuoka University Johoku 3-5-1 Hamamatsu Japan. school of Physics Alagappa University Karaikudi-630003 India. school of Physics Madurai Kamaraj University Madurai-625021 India.

An organic material, namely, ethyl p-dimethylamino benzoate was crystallized for the first time by solution growth technique using pure and mixed solvents. Growth kinetics and morphology changes with solvents were investigated based on solute –solvent interactions of pure and mixed solvents. An appropriate mixed solvent for high quality crystals with well-defined morphology is reported. The absence of solvent molecules and the presence of various functional groups of the grown sample were qualitatively confirmed by FTIR spectroscopic studies. Thermal properties of the grown sample were analyzed by TG and DTA analysis. mechanical properties of the EDMAB crystal were investigated by micro hardness studies. Moreover, the grown crystal shows high transparency in the visible and near IR regions. The material shows relatively high sHG efficiency than that of KDP.

关键词： Organic compounds Crystal growth - Optical properties

Olfactory dysfunction in antineutrophil cytoplasmic antibodyassociated vasculitides: A review of the literature

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World Journal of Methodology 2021年第2期11卷 15-22页

作者： Alfonso Luca Pendolino Anika Kaura Annakan V Navaratnam Monica Pendolino Gerolamo Bianchi samit Unadkat Giancarlo Ottaviano Premjit s Randhawa Peter J Andrews department of Ear Nose and ThroatRoyal National ENT and Eastman Dental HospitalsLondon WC1E 6DGUnited Kingdom Ear Institute University College LondonLondon WC1X 8EEUnited Kingdom Division of Rheumatology Department of Locomotor SystemASL 3Genoa 16121Italy department of Neurosciences DNs Otolaryngology SectionUniversity of PaduaPadua 35128Italy

Olfactory dysfunction(OD)has been described in patients with antineutrophil cytoplasmic antibody-associated vasculitides(AAV),but the underlying mechanisms are not completely *** causes of altered smell function can generally be divided into conductive,sensorineural or *** date no specific treatment is available for AAV-related OD and the efficacy of currently available options has not been *** aim of this review is to provide an overview of the causes that may lead to OD in patients with *** available treatments for OD and possible options in patients with AAV presenting with smell impairment are also mentioned.

关键词： smell Olfactory dysfunction Antineutrophil cytoplasmic antibody-associated vasculitis diseases Granulomatosis with polyangiitis Eosinophilic granulomatosis with polyangiitis Microscopic polyangiitis

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民用飞机风扇的计算气动弹性综述（英文）