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2022 IEEE Photonics Society Summer Topicals Meeting Series, SUM 2022

作者： Takahashi, Masanori Maeda, Koichi Aiso, Keichi Mukasa, Kazunori Soma, daiki Takahashi, Hidenori Tsuritani, Takehiro Mitrovic, Miranda Palsdottir, Bera Arasitani, Yoshihiro Telecommunications & Energy Laboratories Furukawa Electric Co. Ltd. Chiba Japan Advanced Technology Laboratory Kddi Research Inc. Saitama Japan R&d Product Development Ofs Fitel Denmark ApS Brondby Denmark

An uncoupled 125-μm-cladding 4-core multicore fiber (MCF) with low attenuation loss of 0.155dB/km is reported. Span loss of 60.2km MCF is reduced to less than 10dB including fan-in and fan-out. Inter core crosstalk o... 详细信息

ISBN: (纸本)9781665434898

关键词： Crosstalk

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BOE-ziSIM: A design-technology-Manufacturing Co-optimization Platform

BOE-ziSIM: A Design-Technology-Manufacturing Co-optimization...

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Advanced Patterning Solutions (IWAPS), International Workshop on

作者： Nan Liu Zhizhao Zhang Shantao Chen Lisong dong Hong Wang Technology R&D Center Beijing Zhongxiangying Technology Co. Ltd Technology R&D Center Beijing Zhongxiangying Technology Co. Ltd Beijing China Panel Technology Development BOE Technology Group Co. Ltd. Beijing China Institute of Microelectronics of Chinese Academy of Science Beijing China Beijing Zhongxiangying Technology Co. Ltd Beijing China

Thin-film transistors (TFT) and organic light-emitting diodes (OLEd) for display applications involve new materials, structures and processes in the design and development phase, and these elements can have a significant impact on the performance of the TFT devices. The increasing need for personalized and diversified display productions brings two problems: 1. To achieve the desired performance indicators in fabrication processes, a large number of experiments are required to continuously optimize the process parameters, which not only increases economic and time costs but also limits the development speed of new productions. 2. The display production iterations are getting faster to meet the market requirement, in other words, the time left for yield improvement becomes shorter. A design-technology-Manufacturing Co-optimization platform called BOE-ziSIM is introduced in this paper, it was developed to solve the above mentioned problems, the experiment results show that the defects analysis time is reduced from hours to minutes, and the equipment adjustment time is reduced from days to minutes.

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rF rectifier design for Efficient WPT in Medical Implants: A Wideband Approach for White Space WiFi and LTE Applications

RF Rectifier Design for Efficient WPT in Medical Implants: A...

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Asia-Pacific Conference on Applied Electromagnetics, APACE

作者： Surajo Muhammad Jun Jiat Tiang Suhandi Bujang Center for Intelligent Network Telekom Research & Development (TM R&D) Sdn Bhd TM Innovation Centre Cyberjaya Malaysia Centre For Wireless Technology Faculty of Engineering Multimedia University Cyberjaya Malaysia

ISBN: (数字)9798350364163

ISBN: (纸本)9798350364170

This paper presents a unique design approach for a high-efficiency wideband rF rectifier, which incorporates a two-branch cell configuration combined with an L-shunt matching network (MN), a radial stub, and a series inductor. The rectifier has been optimized to achieve peak power transfer efficiency across the 2.37–2.70 GHz frequency range, making it well suited for white space Wi-Fi and LTE applications. Simulation results indicate promising performance, with a maximum power conversion efficiency (PCE) of 66.25% at an input power level of 5 dBm. Furthermore, the rectifier achieves rF-to-dC conversion efficiencies between 11.50% and 13.5% at -20 dBm, demonstrating its effectiveness across a range of input power levels. designed on an rT/duroid substrate, the rectifier has a compact footprint of 19.75 mm × 15.20 mm and utilizes a single-series diode (SSrd) architecture. The design employs a sequential matching technique to ensure a wide impedance bandwidth, enabling efficient utilization of the targeted frequency spectrum. This work highlights the potential of the proposed rectifier for wireless power transfer applications in biomedical implants, particularly in scenarios where ambient power management is critical.

关键词： radio frequency rectifiers Implants Computer architecture Wireless power transfer White spaces Wireless fidelity Wideband Long Term Evolution Substrates

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Quantifying Objective and Perceived Image Quality Through Eeg and Eye-Tracking

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SSrN 2024年

作者： Lim, Changhyun Jeon, Hyun-Jun Jung, Woojae Kwak, Youngshin Lee, Myong Young Ham, Jung Hyun Joo, Hyun Bin Kwon, Oh-Sang Chung, dongil Department of Biomedical Engineering Ulsan National Institute of Science and Technology Ulsan Korea Republic of TV Picture Quality Development Gr. TV R&D Center of LG Electronics Korea Republic of

Image quality evaluation of electronic displays is inherently subjective. To date, user studies in focus groups and viewers’ self-reports have been the primary sources of feedback used as judgment criteria for the display quality. However, little has been known whether the measured responses to visual stimuli, other than self-reports, reflect the objective and subjective levels of image quality on displays. Here, we used electroencephalogram (EEG) and eye-tracking to investigate whether individuals’ neural and physiological responses to visual stimuli track three objectively discerned levels of image quality, as well as their self-ratings on vividness. Our findings reveal that shared and dissociable sets of neurophysiological features successfully tracked both the objective and subjective perspectives of image quality. The current research underscores the effectiveness of EEG and eye-tracking as potential quantitative tools for assessing both the objective image quality disparities and the subjective affective nuances in users' visual display experiences. © 2024, The Authors. All rights reserved.

关键词： Eye tracking

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regulation of the activity interface in Ni–Co–Mn ternary aerogel catalysts for efficient water splitting

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New Journal of Chemistry 2025年第23期49卷 9918-9929页

作者： Lei Ma Zhi Chen Yongkang An Chengzhi Pang Fei Liang Shiwen Wang Xusheng Wang Shengbin Wang Sizhe Wang Research and Development Department (R&D) Shijiazhuang Shangtai Technology Co. Ltd Shijiazhuang Hebei Province 052463 China Yangtze Delta Region Institute (QuZhou) University of Electronic Science and Technology of China China School of Materials Science and Engineering Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials Shaanxi University of Science & Technology China

Extensive studies have demonstrated that multi-element doping can effectively modulate the surface electronic structure of catalysts, significantly enhancing their catalytic performance beyond their single-element counterparts for water splitting. However, the fundamental mechanisms governing how distinct elemental compositions influence the activity-stability trade-off remain insufficiently explored. Inspired by the compositional engineering strategy used for Ni–Co–Mn ternary cathodes (Li(Ni_xCo_yMn_1−x−y)O₂, denoted as NCM) in lithium-ion batteries, we systematically investigated NCM aerogel catalysts with varying stoichiometric ratios (NCM111, NCM523, NCM622, and NCM811) for bifunctional water electrolysis. dFT calculations reveal that Ni–Co–Mn can synergistically modulate the charge distribution of the multimetallic matrix, thereby optimizing the adsorption energetics of reaction intermediates. Electrochemical evaluations demonstrate that NCM111 achieves balanced activity and durability, delivering competitive overpotentials of 198 mV for the HEr and 358 mV for the OEr at 20 mA cm⁻² in alkaline media. This work provides a viable strategy for designing cost-effective, high-performance bifunctional catalysts through rational multi-element coordination, providing a materials-innovation bridge between energy storage and conversion technologies.

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research on construction and operation parameters of an underground oil storage in depleted salt caverns in the east of China 82

Research on construction and operation parameters of an unde...

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SPE Europec featured at 82nd EAGE Conference and Exhibition, EUrO 2021

作者： Jin, Fu Xi, Wang Mingming, ding Guobin, Yang Shunyuan, Zhang Bingshan, Liu Chen, Chen CNPC Engineering Technology R&D Company Ltd. China China National Oil and Gas Exploration and Development Company Ltd. China

ISBN: (纸本)9781613997918

The crude oil price has been keeping at a low level in recent years, which made China's government put more efforts in the development of underground oil storages in depleted salt caverns. Under the initiative of "the Belt and road", a more concrete concept which is "the Silk road Economic Belt and the 21st-Century Maritime Silk road"successfully connects Jiangsu Province in the east of China. Consisting of 20 depleted caverns, Huai'an project that is still under planning is one of the most successful examples that turn depleted salt caverns into underground crude oil storages in China. Each cavern takes up 24×104m3, while the project totally takes up 480×104m3. TdMA algorithm was adopted to solve the heat exchange model of oil, brine and surrounding rocks, revealing the relationship between temperature and cavern pressure. Salt rock safety factor, salt cavern shrinkage ratio, axial stress and ground subsidence were taken into consideration to establish a 3- dimension salt rock creep model for 19 depleted salt caverns, so that the caverns' shapes were optimized. Hydrodynamics models were used to determine the oil's flow rate into and out of a 1000m deep cavern whose thermal field was simulated by software to reveal the temperature limit of oil and brine. due to geothermal gradient and continuous heat transmission, the average temperature of oil and brine goes up from 35°C to 44.3°C within 7 years, while the inner pressure goes up from 12.96MPa to 21.93MPa in a depleted salt cavern. Salt creep ratio decreases as oil is stored in underground caverns for a longer period. Salt is hardly penetrated by oil, while the temperature change has a strong influence on caverns' internal pressure. The thermal expansion factor and compressibility coefficient of crude oil and brine are both crucial to the temperature's effect on internal pressure. Caverns that have larger segments in their uppermiddle or middle parts are more stable and resistant to salt creep than those that have l

关键词： Crude oil

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Exploring deep Learning Methods for Computer Vision Applications across Multiple Sectors:Challenges and Future Trends

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Computer Modeling in Engineering & Sciences 2024年第4期139卷 103-141页

作者： Narayanan Ganesh rajendran Shankar Miroslav Mahdal Janakiraman SenthilMurugan Jasgurpreet Singh Chohan Kanak Kalita School of Computer Science and Engineering Vellore Institute of TechnologyChennai600127India Department of Computer Science and Engineering Koneru Lakshmaiah Education FoundationVaddeswaram522502India Department of Control Systems and Instrumentation Faculty of Mechanical EngineeringVSB-Technical University of OstravaOstrava70800Czech Republic Department of Computer Science and Engineering Vel Tech High Tech Dr.Rangarajan Dr.Sakunthala Engineering CollegeChennai600062India Department of Mechanical Engineering and University Centre for Research&Development Chandigarh UniversityMohali140413India Department of Mechanical Engineering Vel Tech Rangarajan Dr.Sagunthala R&D Institute of Science and TechnologyAvadi600062India

Computer vision(CV)was developed for computers and other systems to act or make recommendations based on visual inputs,such as digital photos,movies,and other *** learning(dL)methods are more successful than other traditional machine learning(ML)methods *** techniques can produce state-of-the-art results for difficult CV problems like picture categorization,object detection,and face *** this review,a structured discussion on the history,methods,and applications of dL methods to CV problems is *** sector-wise presentation of applications in this papermay be particularly useful for researchers in niche fields who have limited or introductory knowledge of dL methods and *** review will provide readers with context and examples of how these techniques can be applied to specific areas.A curated list of popular datasets and a brief description of them are also included for the benefit of readers.

关键词： Neural network machine vision classification object detection deep learning

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High-resolution coupling of stratigraphic'sweet-spot'lithofacies and petrophysical properties:A multiscale study of Ordovician Goldwyer Formation,Western Australia

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Petroleum Science 2023年第3期20卷 1312-1326页

作者： Yu-jie Yuan reza rezaee Jian-Wei Gu Song-Tao Wu Emad A.Al-Khdheeawi Jun Wang Bin Pan School of Earth Sciences Yunnan UniversityKunmingYunnan650500China Western Australian School of Mines:Minerals Energy and Chemical EngineeringCurtin UniversityPerthWestern AustraliaAustralia School of Petroleum Engineering China University of Petroleum(East China)QingdaoShandong266580China Research Institute of Petroleum Exploration and Development CNPCBeijing100083China National Energy of Tight Oil and Gas R&D Center Bejing100083China Petroleum Technology Department University of Technology-IraqBaghdad10066Iraq School of Civil and Resource Engineering University of Science and Technology BeijingNo.30Xueyuan RoadBeijing10083China State Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing UniversityChongqing400044China

The identification of stratigraphic'sweet-spot'interval is significant in oil and gas formation ***,formation evaluation in macroscopic-scale merely provides low resolution and limited infor-mation,thus may lead to uncertainties in resource *** accurately identify the'sweet-spot'intervals amongst heterogeneous lithofacies,we conducted a very high-resolution and quantitative analysis from in-situ macroscopic scale to laboratory microscopic scale on the Goldwyer formation of Canning Basin,Western *** comprehensive advanced well logging and slim-compact micro imager(SCMI)technologies were synthetically applied in couple with the laboratory nanoscaled *** results unveiled an extraordinarily large lithofacies heterogeneity between different rock intervals,with distinguished features shown in Goldwyer Ⅰ,Ⅱ,and Ⅲ *** most favorable lithofacies is recognized as the laminated argillaceous thermally-matured organic matter(OM)-rich mudstone,which is widely developed in Goldwyer Ⅲ as the major attributor to'sweet-spot'*** Ⅱ is exclusively characterized by thick mudstone intervals(94.4%),interbedded with thin calcareous mudstones(5.5%),corresponding to a depositional environment of low-energy distal section of the outer ramp ***,the most favorable lithofacies in'sweet-spot'intervals develop numerous OM-/mineral nanopores for hydrocarbon ***-rich lithofacies develops abundant inter-particle pores from 2 to 17 nm that mainly contribute to pore volume for free gas storage ***-rich lithofacies with higher maturity have OM-pores with good connectivity,bearing large specific surface area that is beneficial for adsorbed gas capacity.

关键词： Shale Nanopore structure Pore characterization Lithofacies

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Surface re-Melting Strategy Assisted Lpbf In-Situ Alloying technology

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SSrN 2024年

作者： Hou, Yaqing Li, Fafa Cai, Weidong Zhang, Hao He, Yazhou Tu, Wen Yang, Jiahui Zhang, rongbao Su, Hang Material Digital R&D Center China Iron and Steel Research Institute Group Beijing100081 China ADRAYN Technology Co. Ltd Chongqing404100 China China Iron and Steel Research Institute Group China

The Laser Powder Bed Fusion (LPBF) in-situ alloying technology, utilizing heterogeneous powder blends as raw materials, has revolutionized the freedom of alloy composition design for Additive Manufacturing (AM). However, achieving in-situ metallurgy between heterogeneous powders and ensuring the uniform distribution of alloying elements while maintaining sample formability remains a significant challenge for this technology. The work proposes the process strategy of surface remelting-assisted LPBF in-situ alloying and can be adapted to a wide range of alloying elements. FeCoCrNi alloys with equal atomic ratios were successfully fabricated using self-developed equipment combined with multiple surface remelting processes. Analysis results demonstrate that regional segregation and micro segregation of elements can be significantly improved while ensuring that the sample's density exceeds 99% by incorporating the surface remelting process into LPBF in-situ alloying samples twice. Multiple surface remelting has no noticeable coarsening effect on the grain. The average grain size of the sample with 5 times of surface remelting is only 2.7 μm higher than that of the sample prepared using traditional pre-alloyed powder. The surface remelting strategy can induce a dislocation strengthening effect on the sample. Consequently, an increase in the number of surface remelting cycles enhances both the strength and plasticity. © 2024, The Authors. All rights reserved.

关键词： Alloying

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revealing the Electrochemical- Mechanical Correspondence between Electrode Films and 20 Ah Prismatic Li-Ion Batteries Via Optical Fiber Monitoring

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SSrN 2024年

作者： Ge, Xiaoyu Zhang, Yi du, rui Chen, Nian Yu, Yifei Li, Zhen Huang, Yunhui State Key Laboratory of Material Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan430074 China Camel Group Wuhan Optical Valley R&D Center Co. LTD Wuhan430075 China

revealing the connections and corresponding relationship between the electrodes’ changes and the cell-level strain variation can enhance the accurate estimation of state of charge (SOC), state of health (SOH), cycling life, safety and other key factors of the large capacity prismatic batteries. By utilizing Fiber Bragg grating (FBG) sensors and "Zero-strain" lithium titanate (LTO) electrode, strain behaviors of LiFePO4 (LFP) and graphite electrodes have been directly monitored and further connected to the strain variation of a 20 Ah LFP||Graphite prismatic battery monitored by surface-implanted FBG. Furthermore, we also shown the feasibility for accuratly estimating the SOC and SOH of the battery based on strain profiles, encouraging the utilaztion of FBG strain monitoring in actual engineering filed. © 2024, The Authors. All rights reserved.

关键词： Lithium-ion batteries

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