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Current status and development of CMOS SiPM for scintillator-based radiation detectors toward all-digital sensors[Invited]

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Chinese Optics Letters 2024年第2期22卷 17-27页

作者： Nico.a D'Ascenzo 胡文韬劳慧华越轩张博房磊奚道明郑睿邱奥 Emanuele Antonecchia 凌怡清刘雨晴李琰俞航肖鹏谢庆国 Wuhan National Laboratory for Optoelectronics Wuhan 430074China Biomedical Engineering Department Huazhong University of Science and TechnologyWuhan 430074China RAYQUANT technology co. Ltd.Ezhou 436044China RAYSOLUTION Healthcare co. Ltd.Hefei 230000China RAYMEASURE technology co. Ltd.Suzhou 215000China RAYCAN technology co. Ltd.Suzhou 215000China co.lege of co.puter science and Software Engineering Shenzhen UniversityShenzhen 518060China

Modern scintillator-based radiation detectors require silico. photomultipliers(Si PMs)with photon detection efficiency higher than 40%at 420 nm,possibly extended to the vacuum ultraviolet(VUV)region,single-photon time resolution(SPTR)co.nt rate(DCR)co.centrations at low CMOS scales,deep-level carrier generation in shallow trench isolation fabrication,and power co.sumption,among *** advances at 350 and 110 nm CMOS nodes are benchmarked against available Si PMs obtained in CMOS and co.mercial customized *** co.cept of digital multithreshold Si PMs with a single microcell readout is finally reported,proposing a possible direction toward fully digital scintillator-based radiation detectors.

关键词： silico. photomultiplier co.plementary metal-oxide semico.ductor digital SiPM

维普期刊数据库

I-DCGAN and TOPSIS-IFP:A simulation generation model for radiographic flaw detection images in light alloy castings and an algorithm for quality evaluation of generated images

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China Foundry 2024年第3期21卷 239-247页

作者： Ming-jun Hou Hao Dong Xiao-yuan Ji Wen-bing Zou Xiang-sheng Xia Meng Li Ya-jun Yin Bao-hui Li Qiang Chen Jian-xin Zhou State Key Laboratory of Materials Processing and Die&Mould technology Huazhong University of Science and TechnologyWuhan 430074China xinjiang technology(Jiangsu)co. Ltd.Nantong 226100JiangsuChina Southwest Technique and Engineering Research Institute Chongqing 400039China Shanghai Spaceflight Precision Machinery Institute Shanghai 201600China

The intelligent detection technology driven by X-ray images and deep learning represents the forefront of advanced techniques and development trends in flaw detection and automated evaluation of light alloy ***,the efficacy of deep learning models hinges upon a substantial abundance of flaw *** existing research on X-ray image augmentation for flaw detection suffers from shortco.ings such as poor diversity of flaw samples and low reliability of quality *** this end,a novel approach was put forward,which involves the creation of the Interpolation-Deep co.volutional Generative Adversarial Network(I-DCGAN)for flaw detection image generation and a co.prehensive evaluation algorithm named TOPSIS-IFP.I-DCGAN enables the generation of high-resolution,diverse simulated images with multiple appearances,achieving an improvement in sample diversity and quality while maintaining a relatively lower co.putational ***-IFP facilitates multi-dimensional quality evaluation,including aspects such as diversity,authenticity,image distribution difference,and image distortion *** results indicate that the X-ray radiographic images of magnesium and aluminum alloy castings achieve optimal performance when trained up to the 800th and 600th epochs,*** TOPSIS-IFP value reaches 78.7%and 73.8%similarity to the ideal solution,*** to single index evaluation,the TOPSIS-IFP algorithm achieves higher-quality simulated images at the optimal training *** approach successfully mitigates the issue of unreliable quality associated with single index *** image generation and co.prehensive quality evaluation method developed in this paper provides a novel approach for image augmentation in flaw reco.nition,holding significant importance for enhancing the robustness of subsequent flaw reco.nition networks.

关键词： light alloy casting flaw detection image generator discriminator co.prehensive evaluation index

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Warhead fragments motion trajectories tracking and spatio-temporal distribution reco.struction method based on high-speed stereo photography

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Defence technology（防务技术） 2024年第7期37卷 162-172页

作者： Pengyu Hu Jiangpeng Wu Zhengang Yan Meng He Chao Liang Hao Bai Xi'an Modern co.trol technology Research Institute Xi'an710065China Xi'an OET science and technology co. LtdXi'an710076China

High speed photography technique is potentially the most effective way to measure the motion parameter of warhead fragment benefiting from its advantages of high accuracy,high resolution and high ***,it faces challenge in dense objects tracking and 3D trajectories reco.struction due to the characteristics of small size and dense distribution of fragment *** address these challenges,this work presents a warhead fragments motion trajectories tracking and spatio-temporal distribution reco.struction method based on high-speed stereo ***,background difference algorithm is utilized to extract the center and area of each fragment in the image ***,a multi-object tracking(MOT)algorithm using Kalman filtering and Hungarian optimal assignment is developed to realize real-time and robust trajectories tracking of fragment *** reco.struct 3D motion trajectories,a global stereo trajectories matching strategy is presented,which takes advantages of epipolar co.straint and co.tinuity co.straint to co.rectly retrieve stereo co.respondence followed by 3D trajectories refinement using polynomial ***,the simulation and experimental results demonstrate that the proposed method can accurately track the motion trajectories and reco.struct the spatio-temporal distribution of 1.0×10~3fragments in a field of view(FOV)of 3.2 m×2.5 m,and the accuracy of the velocity estimation can achieve 98.6%.

关键词： Warhead fragment measurement High speed photography Stereo vision Multi-object tracking Spatio-temporal reco.struction

The Influence of Different Solar System Planetary Ephemerides on Pulsar Timing

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Research in Astronomy and Astrophysics 2024年第8期24卷 87-101页

作者： Jian-Peng Dai Wei Han Na Wang School of Physical science and technology Xinjiang University xinjiang Astronomical Observatory Chinese Academy of Sciences University of Chinese Academy of sciences xinjiang Key Laboratory of Radio Astrophysics

Pulsar timing offers a co.prehensive avenue for exploring diverse topics in physics and *** solar system planetary ephemeris is crucial for pulsar timing as it provides the positions and velocities of solar system planets including the ***,it is inevitable that inherent inco.sistencies exist in these *** between various ephemerides can significantly impact pulsar timing and parameter ***,pulsar timing highly depends on the JPL DE ephemeris,for instance,the Pulsar Timing Array data analysis predominantly utilizes *** this study,we examine inco.sistencies across various ephemeris series,including JPL DE,EPM,and ***,discrepancies emerge particularly between the current ephemeris DE436 and the earliest released ephemeris DE200,as well as the most recent ephemerides,e.g.,DE440,INPOP21A,and *** detailed analysis of the effects of ephemeris on geometric co.rection procedures for the co.version of measured topocentric times of arrival is presented in this *** researches reveal that variations in the Roemer delays across different ephemerides lead to distinct *** timing residuals and the fact that these discrepancies can be readily inco.porated into the subsequent pulsar parameters,leading to inco.sistent fitting estimates,suggest that the influence of errors in the ephemeris on the timing process might currently be underappreciated.

关键词： (stars:) pulsars: general ephemerides Planetary Systems time

Energy band modulation of N-doped rutile/anatase TiO2 photoanode promoting charge separation toward prominent photoelectrochemical performance

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Rare Metals 2024年第8期43卷 3784-3797页

作者： Juan Gao Shi-Xuan Wang Jia-Le Deng Ping-Ping Wei Fu-Zhang Chen Ling-Cheng Zheng Yue-Qin Wang Yang Li Yin Liu Gang He School of Mechanics and Photoelectric Physics Anhui University of Science and Technology School of Materials science and Engineering Anhui University Tianneng Battery (Wuhu) co. Ltd. School of Materials science and Engineering Anhui University of Science and Technology

To solve the problem of high photogenerated carrier reco.bination rate and low photoelectric co.version efficiency of TiO2-based materials,a simple N-doped anatase/rutile TiO2heterophase nanorod film was designed by a low-temperature hydrothermal method in this *** enhanced separation and transport of photogenerated charges were facilitated by the smaller co.tact barrier and appropriate band matching between anatase TiO2nanoparticles and rutile *** introduction of N doping in anatase TiO2resulted in an upward shift of the valence band and a narrowing of the band gap,co.sequently enhancing the efficiency of visible light *** co.bination of the heterophase junction and N-doping exhibited a synergistic effect,effectively suppressing the reco.bination of photogenerated charges and enhancing the photoelectric co.version efficiency of the *** AM 1.5G irradiation,the photocurrent density（J） of the A-TO（N）@R-TONR photoanode reached2.19 mA·cm-2(VRHE,1.23 eV).Additionally,the incident photon-electron co.version efficiency（IPCE） and the charge injection efficiency（η） reached 81.4% and 51.6% at320 ***,the J,IPCE,and η values of the A-TO（N）@R-TONR photoanode were 2.96,2.1 and 3.2times those of pure R-TONR photoanode,*** work presents a rational strategy for designing efficient TiO2-based photoanodes.

关键词： TiO 2 Heterophase junction Photoanode

Synergistically co.structed lamination-like network of redox-active polyimide and MXene via π-π interactions for aqueous NH_(4)^(+) storage

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Chinese Journal of Chemical Engineering 2024年第7期71卷 217-224页

作者： Jing He Hongye Xuan Jing Jin Ke Yu Changyao Liyang Lintong Hu Minjie Shi Chao Yan School of Materials science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China Jiangsu New Yangzi Shipbuilding co. LtdJingjiang 214532China

As a nonmetallic charge carrier,ammonium ion(NH_(4)^(+))has garnered significant attention in the co.struction of aqueous batteries due to its advantages of low molar mass,small hydration size and rapid diffusion in aqueous *** are a kind of potential electro-active materials for aqueous NH_(4)^(+)***,traditional polymer electrodes are typically created by co.ering the bulky co.lectors with excessive additives,which co.ld lead to low volume capacity and unsatisfactory ***,a nanoparticle-like polyimide(PI)was synthesized and then co.bined with MXene nanosheets to synergistically co.struct an additive-free and self-standing PI@MXene co.posite ***,the redox-active PI nanoparticles are enclosed between co.ductive MXene flakes to create a 3D lamination-like network that promotes electron transmission,while theπ-πinteractions existing between PI and MXene co.tribute to the enhanced structural integrity and stability within the co.posite *** such,it delivers superior aqueous NH_(4)^(+)storage behaviors in terms of a notable specific capacity of 110.7 mA·h·cm^(–3) and a long lifespan with only 0.0064%drop each ***,in-situ Raman and UV–Vis examinations provide evidence of reversible and stable redox mechanism of the PI@MXene co.posite electrode during NH_(4)^(+)uptake/removal,highlighting its significance in the area of electrochemical energy storage.

关键词： Synergetic co.pling co.posite materials Polyimide Energy storage Aqueous ammonium ion batteries

Magnesium-co.taining pellet regulating blast furnace ferrous burden interaction:softening-melting behavior and mechanism

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Journal of Iron and Steel Research(International) 2024年第7期31卷 1623-1635页

作者： Li-ming Ma Jian-liang Zhang Yao-zu Wang Xiao-yong Ma Gui-lin Wang Zhuo Li Hui-qing Jiang Zheng-jian Liu School of Metallurgical and Eco.ogical Engineering University of Science and Technology BeijingBeijing 100083China School of Intelligence science and technology University of Science and Technology BeijingBeijing 100083China Lingyuan Iron and Steel Group co. Lingyuan 122500LiaoningChina

MgO participates in all stages of sintering,pelletizing,and blast furnace ironmaking,and synergistically optimizing the distribution of MgO in ferrous burden can effectively enhance the interaction within the ferrous burdens and optimize the softening-melting properties of the mixed ***-co.taining pellets mixed with low-MgO sinter or mixed with high-MgO sinter in the blast furnace ferrous burden structure have opposite softening-melting performance *** the structure of the ferrous burden is magnesium-co.taining pellets mixed with low-MgO sinter,the magnesium-co.taining pellets can enhance the interaction of the ferrous burden in the process of softening-melting,which can optimize the co.position of the slag phase and improve the slag *** the structure of the ferrous burden is magnesium-co.taining pellets mixed with high-MgO sinter,the magnesium-co.taining pellets weaken the interaction of the ferrous burden in the process of softening-melting,increase the co.tent of the high melting point solid-phase particles in the slag,lead to an increase in the visco.ity of the slag and difficult separation of the slag and iron,and decrease the permeability of the charge ***,to ensure good permeability of the mixed burden,the following measures are suggested:optimizing the MgO distribution of the ferrous burden,reducing the MgO co.tent of the sinter to 1.96 wt.%,increasing the MgO co.tent of the pellets to 1.03-1.30 wt.%,co.trolling the MgO/Al_(2)O_(3) ratio of the mixed burden within 1.15-1.32,narrowing the position of the co.esive zone,and maintaining an S value(permeability index)of approximately 150 kPa℃.

关键词： Ironmaking Ferrous burden Softening-melting property Interaction Permeability Slag

Network Intrusion Traffic Detection Based on Feature Extraction

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co.puters, Materials & co.tinua 2024年第1期78卷 473-492页

作者： Xuecheng Yu Yan Huang Yu Zhang Mingyang Song Zhenhong Jia co.lege of Information science and Engineering Xinjiang UniversityUrumqi830046China Network Department China Mobile Communications Group Xinjiang CoLtd.UrumqiUrumqi830011China xinjiang Signal Detection and Processing Key Laboratory Xinjiang UniversityUrumqi830000China

With the increasing dimensionality of network traffic,extracting effective traffic features and improving the identification accuracy of different intrusion traffic have beco.e critical in intrusion detection systems(IDS).However,both unsupervised and semisupervised anomalous traffic detection methods suffer from the drawback of ignoring potential co.relations between features,resulting in an analysis that is not an optimal ***,in order to extract more representative traffic features as well as to improve the accuracy of traffic identification,this paper proposes a feature dimensionality reduction method co.bining principal co.ponent analysis and Hotelling’s T^(2) and a multilayer co.volutional bidirectional long short-term memory(MSC_BiLSTM)classifier model for network traffic intrusion *** method reduces the parameters and redundancy of the model by feature extraction and extracts the dependent features between the data by a bidirectional long short-term memory(BiLSTM)network,which fully co.siders the influence between the before and after *** network traffic is first characteristically downscaled by principal co.ponent analysis(PCA),and then the downscaled principal co.ponents are used as input to Hotelling’s T^(2) to co.pare the differences between *** datasets with outliers,Hotelling’s T^(2) can help identify the groups where the outliers are located and quantitatively measure the extent of the ***,a multilayer co.volutional neural network and a BiLSTM network are used to extract the spatial and temporal features of network traffic *** empirical co.sequences exhibit that the suggested approach in this manuscript attains superior outco.es in precision,recall and F1-sco.e juxtaposed with the prevailing *** results show that the intrusion detection accuracy,precision,and F1-sco.e of the proposed MSC_BiLSTM model for the CIC-IDS 2017 dataset are 98.71%,95.97%,and 90.22%.

关键词： Network intrusion traffic detection PCA Hotelling’s T^(2) BiLSTM

Single Fe atom-anchored manganese dioxide for efficient removal of volatile organic co.pounds in refrigerator

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Nano Research 2024年第5期17卷 3927-3933页

作者： Yiwen Wang Jun Zhang Yongfei Zhang Yu Zhang Zhe Wang Jing Wang Yuen Wu Department of Endocrinology the First Affiliated Hospital of USTCDivision of Life Science and MedicineUniversity of Science and Technology of ChinaHefei 230001China School of Chemistry and Materials science University of Science and Technology of ChinaHefei 230026China Hefei Hualing co. LtdHefei 230088China Linkway technology co. LtdResearch Institute of Single Atom Catalysts Industry TechnologyNanning 530000China

The efficient and rapid removal of volatile organic co.pounds(VOCs)holds significant importance for ensuring food quality and human health,particularly within the low-temperature co.fined spaces in ***,achieving effective VOCs degradation under such co.ditions poses challenges in terms of activating inert bonds and facilitating mass *** this study,we propose a novel solution by designing a cleaner module that inco.porates 1.07%single Fe atom-anchored manganese dioxide catalysts(FeSAs-MnO_(2)).The co.bination of single Fe atoms and defect-rich MnO_(2) substrate efficiently activates molecular oxygen,leading to enhanced generation of highly reactive oxygen species(ROS).Non-thermal plasma(NTP)and circulating fan are introduced to facilitate the regeneration of catalytic activity and improve mass *** FeSAs-MnO_(2) cleaner module demonstrates exceptional performance in trimethylamine(TMA)removal,achieving a co.version efficiency of 98.9%for 9 ppm within just 9 ***,accelerated aging tests predict an extended service life of up to 45 years for the FeSAs-MnO_(2) cleaner module,surpassing the expected lifespan of refrigerators significantly.

关键词： single atom catalysts volatile organic co.pounds(VOCs) trimethylamine(TMA) non-thermal plasma(NTP) refrigerator