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4th International Computational Imaging Conference, CITA 2024

作者： Tang, Guitao Li, Dongqing Zhou, Xinghong Yi, Duo Liu, Fei College of Physics and Optoelectronic Engineering Shenzhen Key Laboratory of Sensor Technology Shenzhen University Shenzhen518060 China School of Computer and Communication Engineering University of Science and Technology Beijing Beijing100083 China

ISBN: (纸本)9781510688834

The current research relating to the fiber optic seismic sensor (FOSS) mainly focuses on optimizing its steady-state characteristic parameters including sensitivity, cross-sensitivity and operating bandwidth etc., while there are few studies on its transient response characteristics. In this study, we discuss the transient response improvement of the FOSS in both laboratory platform and oilfield. In the laboratory platform, the ball-falling process is used to simulate the perforation shot signal during down-hole seismic monitoring, and the transient response between the FOSS and the commercial piezoelectric sensor has been compared in both time and frequency domain. Besides, two different types of balls (steel and cotton) are used to verify the transient response performance of the presented FOSS when retrieving different types of signals. The experimental results demonstrate that correlation coefficients as high as 90% are obtained within the frequency range 0~3000 Hz for two ball-falling processes. Finally, the presented FOSS has been used for detecting the perforation shot signal in the oilfield, the comparative analyses based on the key parameters including taking off time and attenuation constant also confirm the transient response optimization of the presented sensor, which is beneficial to improve the acquisition accuracy of seismic signal. © 2025 SPIE.

关键词： Gas industry

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Frontiers in high entropy alloys and high entropy functional materials

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Rare Metals 2024年第10期43卷 4639-4776页

作者： Wen-Tao Zhang Xue-Qian Wang Feng-Qi Zhang Xiao-Ya Cui Bing-Bing Fan Jia-Ming Guo Zhi-Min Guo Rui Huang Wen Huang Xu-Bo Li Meng-Ru Li Yan Ma Zhi-Hua Shen Yong-Gang Sun De-Zhuang Wang Fei-Yang Wang Li-Qiang Wang Nan Wang Tian-Li Wang Wei Wang Xiao-Yang Wang Yi-Han Wang Fu-Jie Yu Yu-Zhen Yin Ling-Kun Zhang Yi Zhang Jian-Yang Zhang Qi Zhao Yu-Ping Zhao Xin-Dong Zhu Yasir Sohail Ya-Nan Chen Tao Feng Qi-Long Gao Hai-Yan He Yong-Jiang Huang Zeng-Bao Jiao Hua Ji Yao Jiang Qiang Li Xiao-Ming Li Wei-Bing Liao Huai-Jun Lin Hui Liu Qi Liu Qing-Feng Liu Wei-Di Liu Xiong-Jun Liu Yang Lu Yi-Ping Lu Wen Ma Xue-Fei Miao Jie Pan Qing Wang Hong-Hui Wu Yuan Wu Tao Yang Wei-Ming Yang Qian Yu Jin-Yu Zhang Zhi-Gang Chen Liang Mao Yang Ren Bao-Long Shen Xun-Li Wang Zhe Jia He Zhu Zhen-Duo Wu Si Lan School of Materials Science and Engineering Nanjing University of Science and TechnologyNanjing 210094China Jiangsu Key Laboratory for Advanced Metallic Materials School of Materials Science and EngineeringSoutheast UniversityNanjing 211189China Department of Physics City University of Hong KongHongKong 999077China School of Materials Science and Engineering Tianjin UniversityTianjin 300072China School of Physics and Microelectronics Zhengzhou UniversityZhengzhou 450001China Department of Mechanical Engineering Research Institute for Advanced ManufacturingThe Hong Kong Polytechnic UniversityHong Kong 100872China Center of Electron Microscopy and State Key Laboratory of Silicon Materials School of Materials Science and EngineeringZhejiang UniversityHangzhou 310027China Key Laboratory of Solidification Control and Digital Preparation Technology(Liaoning Province) School of Materials Science and EngineeringDalian University of TechnologyDalian 116024China Institute of Advanced Wear&Corrosion Resistance and Functional Materials Jinan UniversityGuangzhou 510632China School of Mechanics and Civil Engineering China University of Mining and TechnologyXuzhou 221116China School of Physical Sciences Great Bay UniversityDongguan 523000China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing 211816China Beijing Advanced Innovation Center for Materials Genome Engineering Research Institute for Carbon NeutralityUniversity of Science and Technology BeijingBeijing 100083China Department of Mechanical Engineering The University of Hong KongHong Kong 999077China School of Computing Macquarie UniversitySydney 2113Australia Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China State Key Laborato

Owing to their exceptional properties,high-entropy alloys(HEAs)and high-entropy materials have emerged as promising research areas and shown diverse ***,the recent advances in the field are comprehensively reviewed,organized into five *** first section introduces the background of HEAs,covering their definition,significance,application prospects,basic properties,design principles,and *** subsequent section focuses on cutting-edge high-entropy structural materials,highlighting developments such as nanostructured alloys,grain boundary engineering,eutectic systems,cryogenic alloys,thin films,micro-nano-lattice structures,additive manufacturing,high entropy metallic glasses,nano-precipitate strengthened alloys,composition modulation,alloy fibers,and refractory *** the following section,the emphasis shifts to functional materials,exploring HEAs as catalysts,magneto-caloric materials,corrosion-resistant alloys,radiation-resistant alloys,hydrogen storage systems,and materials for ***,the review encompasses functional high-entropy materials outside the realm of alloys,including thermoelectric,quantum dots,nanooxide catalysts,energy storage materials,negative thermal expansion ceramics,and high-entropy wave absorption *** paper concludes with an outlook,discussing future directions and potential growth areas in the *** this comprehensive review,researchers,engineers,and scientists may gain valuable insights into the recent progress and opportunities for further exploration in the exciting domains of high-entropy alloys and functional materials.

关键词： High entropy alloys Cutting-edge structural materials Cutting-edgefunctional materials

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Nonlinear optical response of niobium telluride and its application for demonstrating pulsed fiber lasers

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Journal of Materiomics 2024年第2期10卷 355-365页

作者： Xinxin Shang Yule Zhang Tuo Li Huanian Zhang Xiaofeng Zou S.Wageh Ahmed A.Al-Ghamdi Han Zhang Shuhao Si Dengwang Li Shandong Province Key Laboratory of Medical Physics and Image Processing Technology Shandong Provincial Key Laboratory of Optics and Photonic DeviceSchool of Physics and ElectronicsShandong Normal UniversityJinan250014China Institute of Microscale Optoelectronics College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen518060China Shandong Yunhai Guochuang Cloud Computing Equipment Industry Innovation Co. Ltd.JinanShandongChina School of Physics and Optoelectronic Engineering Shandong University of TechnologyZibo255049China Department of Physics Faculty of ScienceKing Abdulaziz UniversityJeddah21589Saudi Arabia

Niobium telluride(NbTe_(2)),a kind of few-layer two-dimensional(2D)transition metal dichalcogenides(TMDs)material,has been theoretically predicted with nonlinear absorption properties and excellent optical ***,we experimentally demonstrated an Er-doped fiber(EDF)laser based NbTe_(2)as saturable absorber(SA).Few-layer NbTe_(2)nanosheets were successfully prepared by adopting the commonly used liquid-phase exfoliation(LPE)*** nonlinear optical response of highly stable few-layer NbTe_(2)was investigated through an open-aperture Z-scan laser measurement,the nonlinear absorption coefficient was 2.45×10^(-11)m/*** Q-switched and mode-locked operation centered at 1559 nm were recorded based on NbTe_(2)*** pulse duration was varied from 4.88 ms to 1.75 ms,and the adjustable range of repetition frequency is changed from 44.01 kHz to 64.12 kHz in passively Q-switched ***,a constant repetition rate of 5.33 MHz and pulse width of 2.67 ps were observed in mode-locked *** experimental results fully reveal the nonlinear optical prop-erties of NbTe_(2)used in pulsed fiber lasers and broaden its ultrafast applications in the optics field.

关键词： Niobium telluride Saturable absorber Z-scan Mode-locked pulse Fiber laser

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Predicted Pressure-Induced High-Energy-Density Iron Pentazolate Salts

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Chinese physics Letters 2022年第8期39卷 47-52页

作者： Chuli Sun Wei Guo Yugui Yao Frontiers Science Center for High Energy Material(MOE) Beijing Institute of TechnologyBeijing 100081China Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement(MOE) School of PhysicsBeijing Institute of TechnologyBeijing 100081China State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing 100081China

Metal-pentazolate compounds as candidates for novel high-energy-density materials have attracted extensive attention in recent ***,dehydrated pentazolate salts of transition metal iron are rarely *** predict two new iron pentazolate salts Fdd2-FeN10 and P1(No.1)-FeN10 using a constrained crystal search method based on first-principles *** propose that the stable Fdd2-FeN_(10) crystal may be synthesized from FeN and N_(2) above 20 GPa,and its formation enthalpy is lower than the reported iron pentazolate salt(marked as P1(No.2)-FeN_(10)).Crystal P1(No.1)-FeN_(10) is composed of iron bispentazole *** enthalpy,phonon spectrum and ab initio molecular dynamics calculations are performed to show their thermodynamic,mechanical and dynamic ***,the high energy density(3.709 kJ/g,6.349 kJ/g)and good explosive performance indicate their potential applications as high-energy-density materials.

关键词： properties materials enthalpy

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Fabry–Perot interference optical fiber biosensor based on the ECF for label-free DNA detection

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Applied Optics 2025年第9期64卷 2255-2260页

作者： Wang, Lina Li, Chong Cai, Jun Wu, Shenbing Dai, Mingxia Geng, Youfu Yi, Duo Li, Xuejin College of Electronic Engineering Huainan Normal University Huainan232038 China Shenzhen Key Laboratory of Sensor Technology Shenzhen University Shenzhen518060 China Shenzhen Key Laboratory of Advanced Thin Films and Applications College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen518060 China School of Science and Engineering Chinese University of Hong Kong Shenzhen518172 China

A fiber-optic biosensor based on self-reference parallel Fabry–Perot interference (FPI) is proposed for label-free DNA detection. The parallel FPI is formed by fusing a section of exposed core fiber (ECF) in SMF and MMF. Adopting the air cavity of the ECF as a reference, a self-reference differential phase demodulation technique is designed to improve the stability and resolution of the demodulation system. By functionalizing the fiber surface, the sensor can efficiently capture complementary DNA (cDNA). In addition, the specific selection performance of the sensor is explored using non-complementary DNA (N-cDNA). The experimental results show that the sensor exhibits a good linear response in the concentration range of 1 to 5 µM, and the sensitivity reaches 5.53◦/µM. The detection concentration can be as low as 1 µM. The proposed fiber-optic DNA biosensor has good sensitivity and selectivity and has broad prospects in the fields of biomedical diagnostics, environmental monitoring, and food safety detection. © 2025 Optica Publishing Group. All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.

关键词： Optical fibers

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Research on liquid pipeline blockage based on quasi-distributed FBG 4

Research on liquid pipeline blockage based on quasi-distribu...

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4th International Computational Imaging Conference, CITA 2024

作者： Zhou, Xinghong Li, Dongqing Yi, Duo Geng, Youfu Li, Xuejin College of Physics and Optoelectronic Engineering Shenzhen Key Laboratory of Sensor Technology Shenzhen University Shenzhen China School of Science Chinese University of HongKong Shenzhen518172 China

ISBN: (纸本)9781510688834

The blockage of liquid pipelines greatly affects the safe operation of pipelines, while it is rarely discussed in the previous studies. In this paper, the Fiber Bragg Grating (FBG) sensor is used to monitor the blockage state of liquid pipeline system, and the wavelength shift characteristics of FBG under different degrees of front blockage and rear blockage are discussed. The experimental results have shown that the liquid flow velocity is affected when the inner liquid pipeline is blocked, and the wavelength shifts of different FBGs show the significant differences. Specifically speaking, when the pipeline is blocked, the FBG sensor before and after the blockage point will show the opposite wavelength shifts. The FBG center wavelength shows the red-shift when it located before the blockage point, while the blue-shift occurs when it located after the blockage point. The wavelength shift range is closely related to the relative position between the FBG and the blockage point. Besides, the wavelength shift of FBG caused by rear blockage is significantly greater than that of the front blockage. Based on the above results, an effective method to detect the pipeline blockage can be summarized. These research results provide important theoretical support and technical guidance for real-time monitoring of pipeline health status and prevention of pipeline blockage. © 2025 SPIE.

关键词： Fiber Bragg gratings

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Flexible aqueous Ca-ion full battery with super-flat discharge voltage plateau

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Nano Research 2022年第1期15卷 701-708页

作者： Panpan Wang Hua Wang Zhe Chen Junwei Wu Jingting Luo Yan Huang School of Materials Science and Engineering Shenzhen UniversityShenzhen 518055China State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyShenzhen 518055China Flexible Printed Electronic Technology Center Harbin Institute of TechnologyShenzhen 518055China School of Materials Science and Engineering Harbin Institute of TechnologyShenzhen 518055China College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen 518055China

Recently,multivalent metal-ion batteries have attracted considerable interests on the merits of their natural abundance and multielectron redox ***,the development of Ca-ion battery is still in their preliminary stage because of the lack of suitable electrode *** Ca-storage performance of the existing materials is still unsatisfactory with low capacity,poor cyclic stability,as well as sloping discharge profiles,which cannot provide stable energy *** this work,transition metal oxide Sn-doped In2O3(ITO)has been explored as the aqueous Ca-ion battery anode,which could deliver a high discharge capacity of 71.2 mAh·g^(-1) with an ultra-flat discharge voltage *** Ca storage mechanism was revealed to be reversible conversion reaction based on ex-situ X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),and transmission electron microscopy(TEM)characterizations.A flexible aqueous Ca-ion battery was subsequently assembled with zinc hexacyanoferrate(ZnHCF)cathode and ITO anode sandwiched by hydrogel electrolyte,which could deliver a high specific capacity of 75.3 mAh·g^(-1) at 0.4 A·g^(-1) with a flat output voltage plateau at around 0.8 *** bendable and flexible Ca-ion battery with decent voltage output will pave the way for the energy storage devices towards practical applications in flexible and wearable electronics.

关键词： multivalent metal ion battery aqueous Ca-ion battery voltage plateau ln2O3(ITO) flexible and wearable

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GPU parallel computation of dendrite growth competition in forced convection using the multi-phase-field-lattice Boltzmann model

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Chinese physics B 2023年第7期32卷 530-547页

作者：高梓豪朱昶胜王苍龙 College of Computer and Communication Lanzhou University of TechnologyLanzhou 730050China State Key Laboratory of Gansu Advanced Processing and Recycling of Non-Ferrous Metal Lanzhou University of TechnologyLanzhou 730050China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China Advanced Energy Science and Technology Guangdong Laboratory Huizhou 516000China

A graphics-processing-unit(GPU)-parallel-based computational scheme is developed to realize the competitive growth process of converging bi-crystal in two-dimensional states in the presence of forced convection conditions by coupling a multi-phase field model and a lattice Boltzmann *** elimination mechanism in the evolution process is analyzed for the three conformational schemes constituting converging bi-crystals under pure diffusion and forced convection conditions,respectively,expanding the research of the competitive growth of columnar dendrites under melt convection *** results show that the elimination mechanism for the competitive growth of converging bi-crystals of all three configurations under pure diffusion conditions follows the conventional Walton-Chalmers *** there is forced convection with lateral flow in the liquid phase,the anomalous elimination phenomenon of unfavorable dendrites eliminating favorable dendrites occurs in the grain *** particular,the anomalous elimination phenomenon is relatively strong in conformation 1 and conformation 2 when the orientation angle of unfavorable dendrites is small,and relatively weak in conformation ***,the presence of convection increases the tip growth rate of both favorable and unfavorable dendrites in the grain *** addition,the parallelization of the multi-phase-field-lattice Boltzmann model is achieved by designing the parallel computation of the model on the GPU platform concerning the computerunified-device-architecture parallel technique,and the results show that the parallel computation of this model based on the GPU has absolute advantages,and the parallel acceleration is more obvious as the computation area increases.

关键词： multi-phase field model GPU grain competition growth lattice Boltzmann model

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Simulation of inclined dendrites under natural convection by KKS phase field model based on CUDA

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China Foundry 2023年第5期20卷 432-442页

作者： Chang-sheng Zhu Tian-yu Li Bo-rui Zhao Cang-long Wang Zi-hao Gao College of Computer and Communication Lanzhou University of TechnologyLanzhou 730050China State Key Laboratory of Gansu Advanced Processing and Recycling of Non-Ferrous Metal Lanzhou University of TechnologyLanzhou 730050China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China Advanced Energy Science and Technology Guangdong Laboratory Huizhou 516000GuangdongChina

In this work,Al-4.5wt.%Cu was selected as the research object,and a phase field-lattice Boltzmann method(PF-LBM)model based on compute unified device architecture(CUDA)was established to solve the problem of low serial computing efficiency of a traditional CPU and achieve significant *** model was used to explore the evolution of dendrite growth under natural *** the study of the tip velocities,it is found that the growth of the dendrite arms at the bottom is inhibited while the growth of the dendrite arms at the top is promoted by natural *** addition,research on the inclined dendrite under natural convection was *** is observed that there is a deviation between the actual growth direction and the preferred angle of the inclined *** the increase of the preferred angle of the seed,the difference between the actual growth direction and the initial preferred angle of the inclined dendrite shows a trend of increasing at first and then *** the simulation area,the relative deflection directions of the primary dendrite arms in the top right corner and the bottom left corner of the same dendrite are almost counterclockwise,while the relative deflection directions of the other two primary dendrite arms are clockwise.

关键词： PF-LBM natural convection inclined dendrites CUDA

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Vapor growth of V‑doped MoS_(2)monolayers with enhanced B‑exciton emission and broad spectral response

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Frontiers of optoelectronics 2023年第4期16卷 109-120页

作者： Biyuan Zheng Xingxia Sun Weihao Zheng Chenguang Zhu Chao Ma Anlian Pan Dong Li Shengman Li Key Laboratory for Micro-Nano Physics and Technology of Hunan Province State Key Laboratory of Chemo/Biosensing and ChemometricsHunan Institute of Optoelectronic IntegrationCollege of Materials Science and EngineeringHunan UniversityChangsha 410082China College of Advanced Interdisciplinary Studies and Hunan Provincial Key Laboratory of Novel Nano Optoelectronic Information Materials and Devices National University of Defense TechnologyChangsha 410073China Wuhan National Laboratory for Optoelectronics(WNLO) Huazhong University of Science and Technology(HUST)Wuhan 430074China

Dynamically engineering the optical and electrical properties in two-dimensional(2D)materials is of great signifcance for designing the related functions and *** introduction of foreign-atoms has previously been proven to be a feasible way to tune the band structure and related properties of 3D materials;however,this approach still remains to be explored in 2D ***,we systematically demonstrate the growth of vanadium-doped molybdenum disulfde(V-doped MoS_(2))monolayers via an alkali metal-assisted chemical vapor deposition *** transmission electron microscopy demonstrated that V atoms substituted the Mo atoms and became uniformly distributed in the MoS_(2)*** was also confrmed by Raman and X-ray photoelectron ***-dependent photoluminescence spectra clearly revealed the enhanced B-exciton emission characteristics in the V-doped MoS_(2)monolayers(with low doping concentration).Most importantly,through temperature-dependent study,we observed efcient valley scattering of the B-exciton,greatly enhancing its emission *** transport experiments indicated that typical p-type conduction gradually arisen and was enhanced with increasing V composition in the V-doped MoS_(2),where a clear n-type behavior transited frst to ambipolar and then to lightly p-type charge carrier *** addition,visible to infrared wide-band photodetectors based on V-doped MoS_(2)monolayers(with low doping concentration)were *** V-doped MoS_(2)monolayers with distinct B-exciton emission,enhanced p-type conduction and broad spectral response can provide new platforms for probing new physics and ofer novel materials for optoelectronic applications.

关键词： Atomic substitution.V-doped MoS_(2) Distinct B-exciton Broad spectral response

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