检索结果-南通市图书馆

Controllable large-scale processing of temperature regulating sheath-core fibers with high-enthalpy for thermal management

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Nano Materials Science 2024年第3期6卷 337-344页

作者： Ziye Chen Zexu Hu shining Chen Senlong Yu Liping zhu Hengxue Xiang Meifang zhu Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai201620China College of Mechanical and Engineering Donghua UniversityShanghai201620China

Temperature regulating fibers(TRF_(s)) with high enthalpy and high form stability are the key factors for thermal management. However, the enthalpies of most TRFsare not high, and the preparation methods are still at the laboratory scale. It remains a great challenge to use industrial spinning equipment to achieve continuous processing of TRF_(s) with excellent thermal and mechanical properties. Here, polyamide 6(PA6) based TRF_(s) with a sheath-core structure were prepared by bicomponent melt-spinning. The sheath-core TRF(TRF_(sc)) are composed of PA6 as sheath and functional PA6 as core, which are filled with the shape stable phase change materials(ssPCM),dendritic silica@polyethylene glycol(SiO_(2)@PEG). With the aid of the sheath structure, the filling content of SiO_(2)@PEG can reach 30 %, so that the enthalpy of the TRF_(s) can be as high as 21.3 J/g. The ultra-high enthalpy guarantees the temperature regulation ability during the alternating process of cooling and heating. In hot environment, the temperature regulation time is 6.59 min, and the temperature difference is 12.93℃. In addition, the mechanical strength of the prepared TRF_(sc) reaches 2.26 cN/dtex, which can fully meet its application in the field of thermal management textiles and devices to manage the temperature regulation of the human body or precision equipment, etc.

关键词： Thermal management Hybrid fibers Polyamides Bicomponent melt spinning Temperature regulating fibers

RAMAN SCATTERING IN FIBONACCI METALLIC SUPERLATTICES

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 1988年第8期5卷 377-380页

作者： ZHANG Xingkui XIA Hua HU An zhu shining Laboratory of Solid State Microstructures Nanjing UniversityNanjing

Raman scattering experiments from acoustic phonons in Fibonacci metallic Nb-Cu superlattices were *** main features of the experimental results show that the Raman spectrum is dominated by triplet peaks which originate from the density of states of longitudinal-acoustic(LA)phonons in the subbands of phonon *** expected rich structure of gaps in the phonon spectrum has been labeled by strongest diffraction wave vector factor nτP.

关键词： phonon spectrum metallic

Review:Chromatic Dispersion Manipulation Based on Optical Metasurfaces

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Harbin Institute of Technology(New Series) 2020年第3期27卷 1-19页

作者： Boyan Fu Xiujuan Zou Tao Li Shuming Wang Zhenlin Wang shining zhu National Laboratory of Solid State Microstructures School of PhysicsCollege of Engineering and Applied SciencesNanjing UniversityNanjing 210093China Collaborative Innovation Center of Advanced Microstructures Nanjing UniversityNanjing 210093China Key Laboratory of Intelligent Optical Sensing and Manipulation Ministry of EducationNanjing 210093China

Metasurfaces are densely arrayed two⁃dimensional(2D)artificial planar metamaterials,which can manipulate the polarization,distribution,and amplitude of light by accurately controlling the phase of the scattering *** flat metasurface has the potential to substantially reduce the thickness and complexity of the structures and allows ease of fabrication and integration into ***,the inherent chromatic aberration of the metasurface originating from the resonant dispersion of the antennas and the intrinsic chromatic dispersion limit their *** to effectively suppress or manipulate the chromatic aberration of metalenses has attracted worldwide attention in the last few years,leading to a variety of excellent ***,utilizing the chromatic dispersion of metasurface to realize special functionalities is also of significant *** this review,the most promising recent examples of chromatic dispersion manipulation based on optical metasurface materials are highlighted and put into perspective.

关键词： metasurfaces chromatic dispersion manipulation achromatic metalenses

Enhanced nonlinear optical response of layered WSe1.4Te0.6 alloy in 1 μm passively Q-switched laser

在线全文

学校读者我要写书评

暂无评论

Chinese Optics Letters 2019年第12期17卷 59-63页

作者： Zhengting Du Tianqi Zhang Zhenda Xie Jian Ning Xinjie Lü Jinlong Xu shining zhu College of Engineering and Applied Sciences National Laboratory of Solid State MicrostructuresNanjing UniversityNanjing 210093China School of Electronic Science and Engineering Nanjing UniversityNanjing 210093China

Due to the composition-dependent properties of two-dimensional(2D)transition metal dichalcogenides(TMDs),alloying of existing dissimilar TMDs architecture is a novel and controllable route to tailor crystal structures with superior optical and optoelectronic ***,we reported the hexagonal-phase WSe1.4Te0.6 alloy can enable great promise for enhanced saturable absorption response exceeding the parent component WSe2 and WTe2,with larger modulation depth and lower saturable *** advantages allowed the 1064 nm passively Q-switched lasers based on WSe1.4Te0.6 to be more efficient,with pulse duration narrowed to 45%,and slope efficiency increased by 232%.Our findings highlighted the appropriate alloying of TMDs as an effective strategy for development of saturable absorbers.

关键词： switched passive optical

Numerical Simulation of Temperature Field in Nanostructured Al_2O_3-13TiO_2 Feedstock in Supersonic Plasma Spraying

在线全文

学校读者我要写书评

暂无评论

稀有金属材料与工程 2012年第S1期41卷 81-84页

作者： Li Changqing,zhu Youli,Ma shining,Song Wei Department of Remanufacture Engineering,Academy of Armored Force Engineering,Beijing 100072,China Acad Armored Forces Engn Dept Remanufacture Engn Beijing 100072 Peoples R China

Velocity and temperature of nanostructured Al2O3-13TiO2 feedstocks in supersonic plasma spraying was detected applying CCD thermal spray *** on the detect results,temperature field in the feedstock in spraying process was analyzed via finite element *** shows that the highest velocity of the flying particles exceed to 800m/*** the increase of spraying distance,velocity decline *** temperature of the feedstock increase firstly and then decrease and the highest temperature exceed to 2600℃.Internal temperature of the feedstock is higher than the melting point when the distance reaches to *** the spraying distance increase,temperature gradient in the particle decreased gradually.

关键词： supersonic plasma spraying nanostructured feedstock CCD image analysis numerical simulation

Second-harmonic generation and manipulation in lithium niobate slab waveguides by grating metasurfaces

在线全文

学校读者我要写书评

暂无评论

Photonics Research 2020年第8期8卷 1296-1300页

作者： BIN FANG HANMENG LI shining zhu TAO LI National Laboratory of Solid State Microstructures Key Laboratory of Intelligent Optical Sensing and IntegrationJiangsu Key Laboratory of Artificial Functional MaterialsCollege of Engineering and Applied SciencesNanjing UniversityNanjing 210093China Collaborative Innovation Center of Advanced Microstructures Nanjing 210093China

Nonlinear optical processes in waveguides play important roles in compact integrated photonics,while efficient coupling and manipulations inside the waveguides still remain *** this work,we propose a new scheme for second-harmonic generation as well as beam shaping in lithium niobate slab waveguides with the assistance of well-designed grating metasurfaces atλ=1064 *** encoding the amplitude and phase into the holographic gratings,we further demonstrate strong functionalities of nonlinear beam shaping by the metasurface design,including dual focusing and Airy beam *** approach would inspire new designs in the miniaturization and integration of compact multifunctional nonlinear light sources on chip.

关键词： waveguides harmonic lithium

High-sensitivity Bloch surface wave sensor with Fano resonance in grating-coupled multilayer structures

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2022年第4期31卷 313-319页

作者： Daohan Ge Yujie Zhou Mengcheng Lv Jiakang Shi Abubakar A.Babangida Liqiang Zhang shining zhu Institute of Intelligent Flexible Mechatronics Jiangsu UniversityZhenjiang 212013China National Laboratory of Solid State Microstructures School of PhysicsNanjing UniversityNanjing 210093China

A new type of device consisting of a lithium niobate film coupled with a distributed Bragg reflector(DBR)was theoretically proposed to explore and release Bloch surface waves for applications in sensing and *** film and grating made of lithium niobate(LiNbO_(3))were placed on both sides of the DBR and a concentrated electromagnetic field was formed at the film *** adjusting the spatial incidence angle of the incident light,two detection and analysis modes were obtained,including surface diffraction detection and guided Bloch *** diffraction detection was used to detect the gas molecule concentrations,while guided Bloch detection was applied for the concentration detection of biomolecule-modulated biological *** to the drift of the Fano curve,the average sensor sensitivities from the analysis of the two modes were 1560°/RIU and 1161°/RIU,and the maximum detection sensitivity reached2320/RIU and 2200°/RIU,*** study revealed the potential application of LiNbO_(3)as a tunable material when combined with DBR to construct a new type of biosensor,which offered broad application prospects in Bloch surface wave biosensors.

关键词： lithium niobate Bloch surface wave Fano resonance grating structure biosensor

Electrically controllable laser frequency combs in graphene-fibre microresonators

在线全文

学校读者我要写书评

暂无评论

Light(Science & Applications) 2020年第1期9卷 220-228页

作者： Chenye Qin Kunpeng Jia Qianyuan Li Teng Tan Xiaohan Wang Yanhong Guo Shu-Wei Huang Yuan Liu shining zhu Zhenda Xie Yunjiang Rao Baicheng Yao Key Laboratory of Optical Fibre Sensing and Communications(Education Ministry of China) University of Electronic Science and Technology of ChinaChengduChina National Laboratory of Solid State Microstructures and School of Electronic Science and EngineeringSchool of Physics and College of Engineering and Applied SciencesNanjing UniversityNanjingChina Department of Electrical Computerand Energy EngineeringUniversity of Colorado BoulderBoulderCO 80309USA Key Laboratory for Micro-Nano Optoelectronic Devices(Education Ministry of China) School of Physics and ElectronicsHunan UniversityChangshaChina Research Centre for Optical Fibre Sensing Zhejiang LaboratoryHangzhouChina

Laser frequency combs emitting ultrafast pulses of light,at equidistantly discrete frequencies,are cornerstones of modern information *** recent years,the generation of soliton combs in microcavities with ultrahighquality factors has established microcombs as out-oflaboratory ***,the material and geometry of a laser cavity,which determine comb formation,are difficult to electrically *** dynamic control can further enrich the diversity of comb outputs and help to actively stabilize them.

关键词： laser frequency fibre

Thermal-stable mixed-cation lead halide perovskite solar cells

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Optics Letters 2017年第9期15卷 108-112页

作者： Shuai Gu Pengchen zhu Renxing Lin Mingyao Tang shining zhu Jia zhu National Laboratory of Solid State Microstructures College of Engineering and Applied Sciences and School of Physics and Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210093 China

As perovskite solar cells show tremendous potential for widespread applications, we find that adding inorganic thermal-stable cesium ions into MAPbI_3 results in significantly improves thermal stability. For un-encapsulated perovskite devices, the energy conversion efficiency maintains about 75% of its original value（over 15%） in the MA_（0.85）Cs_（0.05）PbI_3 device under 80 min of heating at 140°C in a dry atmosphere（RH ≤ 30%）. With significantly improved thermal stability achieved by a convenient process, it is expected that this type of mixed-cation perovskites can further facilitate large scale applications.

关键词： Pb Thermal-stable mixed-cation lead halide perovskite solar cells MA PCE Cs FTO