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optical and Microstructural Study of Wide Band Gap ZnO@ZnS Core–Shell Nanorods to be Used as Solar Cell Applications 1st

Optical and Microstructural Study of Wide Band Gap ZnO@ZnS C...

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Proceedings of the 1st International Conference on Sustainable Technologies and advances in Automation, Aerospace and Robotics, STAAAR 2022

作者： Phogat, Peeyush Shreya Jha, Ranjana Singh, Sukhvir Research Lab for Energy Systems Department of Physics Netaji Subhas University of Technology Dwarka New Delhi110078 India

ISBN: (纸本)9789819923489

Recently core–shell types of particles are found to be used for the improvement of semiconductor efficiency, information storage, optoelectronics, catalysis and quantum dots, etc. ZnS and ZnO are II–VI group semiconductors with a wide band gap. Both materials show prominent applications in photocatalytic activity and solar cells. In the present investigations an effort has been made to synthesize Zinc Oxide@ Zinc Sulfide core–shell by a facile water bath route. X-ray diffraction data revealed the presence of ZnO in high percentage with small amount of ZnS phase. W–H plot and size–strain plot was used to evaluate the crystallite size and strain for the as synthesized material. UV–Vis spectroscopy technique was used to record the absorption. On analysis of absorption data revealed a band gap of 3.2 eV and refractive index of 2.34 for the material. Microstructural investigations carried out by TEM show rod and oval shaped core–shell particles having average particle size with a length of 250 nm and breath of 150 nm. The shell thickness estimated from TEM image is about 25 nm. Elemental compositional analysis of the as synthesized material depicted the presence of zinc, oxide and sulfide. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Energy gap

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Design and Implementation of Coroutine Management Environment

Design and Implementation of Coroutine Management Environmen...

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2022 International Conference on Computer Graphics, Artificial Intelligence, and data Processing, ICCAID 2022

作者： Cai, Bin Qiu, Bingcheng Yao, Jian Fu, Jun Xue, Yunlan Liu, Xiaofei Wu, Ruilong Zhang, Xu Guangdong Guangzhou China Wuhan University Hubei Wuhan China China Hi-Tech Group Co. Ltd. Guangdong Guangzhou China Blue Dot Power Data Technology Co. Ltd. Beijing China

ISBN: (纸本)9781510663350

advances in network and storage technologies enable data centers to provide high-concurrency and low-latency processing responses. To meet user needs, a variety of low-latency technologies can be used to improve the overall concurrent response capability of the system on the premise of ensuring system stability. User mode thread pool is one of the techniques that can be used. In a multi-core processor system, the scheduling management of the user mode thread pool is much more complicated. At present, the scheduling management of the user mode thread pool mainly focuses on the resource utilization of the user mode thread pool itself and the scheduling management of many user-mode threads, such as dynamically adjusting the number and usage of user mode threads in the user mode thread pool according to the load of the system, and replacing the system thread scheduling with user mode thread scheduling, etc. The existing user mode thread scheduling methods do not distinguish the performance requirements of different data processing tasks, treat all user mode thread tasks in the same way, cannot reflect the performance requirements of different user mode thread tasks, and cannot provide more fine-grained user mode thread execution timing control;the existing user mode thread scheduling methods do not provide more effective scheduling control for the host thread, but instead use the thread scheduling mechanism of the operating system itself to control the execution of all kernel threads which is difficult to isolate the host thread and other kernel threads in the system;The existing user mode thread scheduling methods cannot give full play to the parallel execution advantages of the multi-core processor architecture, and it is difficult to implement unified resource allocation management among multiple user mode thread pools. This paper provides a two-level scheduling management method for user mode thread pools that effectively integrates the operating system scheduling m

关键词： Resource allocation

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铌酸锂晶体:从全息存储到三维显示

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中国激光 2023年第18期50卷 3-12页

作者：郑大怀王烁琳陈俊锟张宇琦刘宏德任梦昕孔勇发许京军南开大学物理科学学院&泰达应用物理研究院弱光非线性光子学教育部重点实验室天津300457 江苏科技大学理学院江苏镇江212100

铌酸锂晶体是一种多功能、多用途的人工晶体材料,具有温度稳定性好、易于光学冷加工、性能易调控等优势。作为典型的光折变晶体,铌酸锂被广泛应用于高密度光存储、激光物理、信息处理和计算等研究与应用领域。伴随海量存储及动态全息三... 详细信息

铌酸锂晶体是一种多功能、多用途的人工晶体材料,具有温度稳定性好、易于光学冷加工、性能易调控等优势。作为典型的光折变晶体,铌酸锂被广泛应用于高密度光存储、激光物理、信息处理和计算等研究与应用领域。伴随海量存储及动态全息三维显示的巨大需求与快速发展,基于铌酸锂晶体的三维光存储及动态显示再次成为研究热点。针对上述研究与应用,综述了铌酸锂晶体光折变全息存储及显示的原理、研究历史和最新进展,并对未来可能的发展方向进行了展望。

关键词：材料铌酸锂晶体光折变效应全息存储全息显示

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飞秒激光永久光存储的发展及挑战

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中国激光 2022年第10期49卷 152-168页

作者：王磊张栩王熠王琳王晴臧雪李瑞凡胥亦实李臻赜陈岐岱吉林大学电子科学与工程学院集成光电子学国家重点实验室吉林长春130012 清华大学精密仪器系精密测试技术与仪器国家重点实验室北京100084 吉林大学材料科学与工程学院吉林长春130012

面向大数据存储,总结当前冷数据存储的主要方式及特点,针对长寿命和高容量的需求,介绍飞秒激光永久光存储的概念和基本存储内涵;围绕透明介质材料体内改性的类型,依次介绍三维光存储和五维光存储的历史发展过程;阐述了当前具有双折射特... 详细信息

面向大数据存储,总结当前冷数据存储的主要方式及特点,针对长寿命和高容量的需求,介绍飞秒激光永久光存储的概念和基本存储内涵;围绕透明介质材料体内改性的类型,依次介绍三维光存储和五维光存储的历史发展过程;阐述了当前具有双折射特性的存储单元形成机制,超百层的高密度存储技术,225 kB/s单通道、潜在MB/s多通道的快速直写机制;并从纳米区域的电场连续性边界条件和光学衍射极限出发,展望飞秒激光永久光存储在存储容量和写入速度方面的挑战。

关键词：光电器件加工飞秒激光激光材料加工光与物质相互作用光存储纳米光栅

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光计算和光电智能计算研究进展

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中国激光 2024年第18期51卷 235-256页

作者：张楠黄郅祺张子安合聪周辰黄玲玲王涌天北京理工大学光电学院北京市混合现实与新型显示工程技术研究中心北京100081

光计算是采用光信号承载计算数据并利用光学设备进行计算的方式,具有多维度、低延时、低功耗等显著优势。将光计算器件与现有电子计算设备相结合构成光电智能计算架构,有望突破摩尔定律的限制,满足人工智能大算力需求,颠覆传统电子计算... 详细信息

光计算是采用光信号承载计算数据并利用光学设备进行计算的方式,具有多维度、低延时、低功耗等显著优势。将光计算器件与现有电子计算设备相结合构成光电智能计算架构,有望突破摩尔定律的限制,满足人工智能大算力需求,颠覆传统电子计算范式,近年来在学术界和产业界引起越来越浓厚的研究兴趣。围绕光计算的两大分支——光学算子和光学神经网络展开综述,深入探讨各自的工作原理和特点、系统架构特征及应用场景。最后,对光计算和光电智能计算面临的挑战和未来的发展趋势进行展望。

关键词：光计算光电智能计算光学算子光学神经网络人工智能

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advances in Reversible Luminescence Modification and Applications of Inorganic Phosphors Based on Chromism Reaction

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ADVANCED optical MATERIALS 2024年第5期12卷

作者： Haider, Asif Ali Zhao, Heping Zi, Yinzhu Xu, Zan Bai, Xue Cun, Yangke Liu, Yue Babeker, Hassan Saeed, Abdul Song, Zhiguo Qiu, Jianbei Huang, Anjun Liao, Jiayan Yang, Zhengwen Kunming Univ Sci & Technol Coll Mat Sci & Engn Kunming 650093 Peoples R China Chinese Acad Sci Inst Solid State Phys Hefei Inst Phys Sci Key Lab Environm Opt & Technol Hefei 230031 Peoples R China Univ Sci & Technol China Hefei 230026 Peoples R China Univ Technol Sydney Inst Biomed Mat & Devices IBMD Fac Sci Ultimo NSW 2007 Australia

The reversible luminescence modification of inorganic phosphors has emerged as a promising field, enabling innovative applications such as optical memory, multiple anti-counterfeiting, and photoswitches. Traditional luminescence modulation techniques, such as core-shell structure design and energy transfer-related luminescent ions regulation, face challenges in achieving reversible luminescence modification. Chromism induces reversible color changes in materials when stimulated by external fields such as electricity, heat, and light. Combining chromism with luminescence enables the creation of chromism-driven reversible luminescence manipulation in a single material. This review summarizes recent advances in reversible luminescence modification of inorganic phosphors based on chromism reaction and highlights their potential applications in optical data storage, fingerprint acquisition, and anti-counterfeiting areas. The potential prospective research directions are also discussed and the challenges and opportunities of chromism-based reversible luminescent materials are presented for further extended applications. Compared to the traditional luminescence regulation approaches, chromism-induced luminescence modulation of inorganic material has the advantages of good fatigue resistance, reversibility, and reproducibility, which can be widely used in various innovative applications. Herein, a comprehensive overview is presented to summarize the recent advancements of luminescence modulation and its applications based on photo-, thermo-, electro-chromic inorganic ***

关键词： electrochromism inorganic phosphors photochromism reversible luminescence modulation thermochromism

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An overview on building-integrated photovoltaics: technological solutions, modeling, and control

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ENERGY AND BUILDINGS 2024年 324卷

作者： Belloni, E. Bianchini, G. Casini, M. Faba, A. Intravaia, M. Laudani, A. Lozito, G. M. Univ Perugia Dipartimento Ingn Via G Duranti n93 I-06125 Perugia Italy Univ Siena Dipartimento Ingn Informaz & Sci Matemat Via Roma 56 I-53100 Siena Italy Univ Firenze Dipartimento Ingn Informaz via St Marta 3 I-50139 Florence Italy Univ Catania Dipartimento Ingn Elettr Elettron & Informat Via St Sofia n64Cittadella Univ I-95123 Catania Italy

The advancement of renewable and sustainable energy generation technologies has been driven by environmentrelated issues, energy independence, and high costs of fossil fuels. Building-integrated photovoltaic systems have been demonstrated to be a viable technology for the generation of renewable power, with the potential to assist buildings in meeting their energy demands. This work reviews the current status of novel PV technologies, including bifacial solar cells and semi-transparent solar cells. This review discusses the various constructions of PV technologies, recent advances in these products, the influence of key design factors on electrical and thermal performance, and their potential in the design of energy-efficient smart buildings. The attention is focused on bifacial and semi-transparent PV systems, given the high level of interest of the scientific community in their current and potential applications. Focus is also devoted to the analysis of the electrical, optical, and thermal modeling procedures developed for sizing, designing, and integrating photovoltaics into larger building simulations. The development of these models has a positive impact on the implementation of next-generation smart buildings. The latest innovative developments and key issues in the application of bifacial PV solutions in buildings are also summarized and analyzed. Special attention is paid to rear side electrical performance, which can be evaluated by means of illuminance/optical backside modeling. Finally, energy management and control of PV-equipped buildings via both model-based and data-driven approaches are discussed, as well as the integration of electric storage systems in a multi-building context.

关键词： Building-integrated photovoltaics Photovoltaics Bifacial solar cells Semi-transparent solar cells Modeling Control techniques storage

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Nanophotonics-enabled optical data storage in the age of machine learning

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APL PHOTONICS 2021年第11期6卷

作者： Lamon, Simone Zhang, Qiming Gu, Min Univ Shanghai Sci & Technol Inst Photon Chips Shanghai 200093 Peoples R China Univ Shanghai Sci & Technol Ctr Artificial Intelligence Nanophoton Sch Opt Elect & Comp Engn Shanghai 200093 Peoples R China

The growing data availability has accelerated the rise of data-driven and data-intensive technologies, such as machine learning, a subclass of artificial intelligence technology. Because the volume of data is expanding rapidly, new and improved data storage methods are necessary. advances in nanophotonics have enabled the creation of disruptive optical data storage techniques and media capable of storing petabytes of data on a single optical disk. However, the needs for high-capacity, long-term, robust, and reliable optical data storage necessitate breakthrough advances in existing optical devices to enable future developments of artificial intelligence technology. Machine learning, which employs computer algorithms capable of self-improvement via experience and data usage, has proven an unrivaled tool to detect and forecast data patterns and decode and extract information from images. Furthermore, machine learning has been combined with physical and chemical sciences to build new fundamental principles and media. The integration of nanophotonics-enabled optical data storage with emerging machine learning technologies promises new methods for high-resolution, accurate, fast, and robust optical data writing and reading, as well as the discovery, design, and optimization of nanomaterials and nanostructures with new functionalities for next-generation nanophotonics-enabled optical data storage. In this Perspective, we review advances in nanophotonics-enabled optical data storage and discuss the role of machine learning in next-generation nanophotonics-enabled optical data storage. (c) 2021 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license(http://***/licenses/by/4.0/).

关键词： optical data storage

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Based on TMPTA two-monomer photopolymer holographic materials 15

Based on TMPTA two-monomer photopolymer holographic material...

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Conference on Photonic Fiber and Crystal Devices - advances in Materials and Innovations in Device Applications XV Part of SPIE optical Engineering plus Applications

作者： Lv, Huaqing Kang, Biao Liu, Yourong Li, Shaoxing Zheng, Zengrong Zheng, Jihong Univ Shanghai Sci & Technol Engn Res Ctr Opt Instrument & Syst Minist Educ Shanghai Key Lab Modern Opt Syst Shanghai Peoples R China

ISBN: (数字)9781510644915

ISBN: (纸本)9781510644915;9781510644908

In order to study the new holographic recording medium, four kinds of photopolymer materials containing TMPTA monomers are studied. The three-dimensional interference fringe information was successfully recorded in the photopolymer film samples, which proved that it has good holographic recording and high resolution ability. The experimental results show that when the recording angle is 30 degrees, the diffraction efficiency is as high as 93.5%@532nm and the refractive index modulation is as high as 3.07x10(-3). As a holographic recording medium, it has high resolution ability and high diffraction efficiency, the material is possible suitable for permanent storage of holograms and big data, besides it has strong advantages and potential applications in the large-scale 3D display, big data storage, holographic anti-counterfeiting, holographic printing and other fields.

关键词： holography diffraction optics diffraction efficiency photopolymer holographic storage

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Near-perfect fidelity polarization-encoded multilayer optical data storage based on aligned gold nanorods

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Opto-Electronic advances 2021年第11期4卷 55-63页

作者： Linwei Zhu Yaoyu Cao Qiuqun Chen Xu Ouyang Yi Xu Zhongliang Hu Jianrong Qiu Xiangping Li School of Physics and Optoelectronic Engineering Ludong UniversityYantai 264025China Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications Institute of Photonics TechnologyJinan UniversityGuangzhou 510632China State Key Laboratory of Luminescent Materials and Devices and Institute of Optical Communication MaterialsSouth China University of TechnologyGuangzhou 510640China State Key Laboratory of Modern Optical Instrumentation College of Optical Science and EngineeringZhejiang UniversityHangzhou 310027China

Encoding information in light polarization is of great importance in facilitating optical data storage(ODS)for information security and data storage capacity ***,despite recent advances in nanophotonic techniques vastly en-hancing the feasibility of applying polarization channels,the data fidelity in reconstructed bits has been constrained by severe crosstalks occurring between varied polarization angles during data recording and reading process,which gravely hindered the utilization of this technique in *** this paper,we demonstrate an ultra-low crosstalk polarization-en-coding multilayer ODS technique for high-fidelity data recording and retrieving by utilizing a nanofibre-based nanocom-posite film involving highly aligned gold nanorods(GNRs).With parallelizing the gold nanorods in the recording medium,the information carrier configuration minimizes miswriting and misreading possibilities for information input and output,respectively,compared with its randomly self-assembled *** enhanced data accuracy has significantly im-proved the bit recall fidelity that is quantified by a correlation coefficient higher than *** is anticipated that the demon-strated technique can facilitate the development of multiplexing ODS for a greener future.

关键词： optical data storage aligned gold nanorods fidelity nanocomposite film

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