检索结果-内蒙古大学图书馆

Novel In-Plane Semiconductor Lasers XXIv 2025

作者： Skipper, Alec M. Feng, Kaiyin Koscica, Rosalyn Shang, Chen Bowers, John E. Institute for Energy Efficiency University of California Santa Barbara Santa BarbaraCA93106 United States Department of Electrical and Computer Engineering University of California Santa Barbara Santa BarbaraCA93106 United States Materials Department University of California Santa Barbara Santa BarbaraCA93106 United States

ISBN: (纸本)9781510685185

Growing III-v O-band lasers directly on patterned silicon photonics wafers has the potential to decrease the cost and increase the manufacturing throughput of integrated photonics chips needed for applications in data communications. However, this process introduces new challenges in materials growth and device design that are not present in current hybrid and heterogeneous integration techniques. In this work, we address the challenges associated with III-v growth on patterned silicon and present integrated O-band quantum dot lasers grown directly on 300 mm silicon photonics wafers. © 2025 SPIE.

关键词： Quantum dot lasers

来源：评论

学校读者我要写书评

暂无评论

optical and Electrical Characterization of Single-Photon Avalanche Diodes Fabricated in CMOS Technology

Optical and Electrical Characterization of Single-Photon Ava...

引用

2024 IEEE International Conference on Consumer Electronics-Asia, ICCE-Asia 2024

作者： Park, Eunsung Choi, Woo-Young Lee, Myung-Jae Yonsei University Department of Electrical and Electronic Engineering Seoul Korea Republic of

ISBN: (纸本)9798331530839

This paper presents the design, fabrication, and characterization of single-photon avalanche diodes (SPADs) fabricated in 110 nm CMOS technology, optimized for photon-counting imaging and LiDAR applications. The SPADs are designed with active region sizes of 5 μm, 10 μm, 15 μm, and 20 μm, and feature a retrograde virtual guard-ring (GR) structure to prevent premature edge breakdown. Electrical and optical characteristics, including current-voltage (I-v) curve, dark count rate (DCR), and photon detection probability (PDP), were measured to evaluate the performance of SPADs. © 2024 IEEE.

关键词： CMOS integrated circuits

来源：评论

学校读者我要写书评

暂无评论

EUv reticle defectivity: next steps in the EUv scanner and beyond

EUV reticle defectivity: next steps in the EUV scanner and b...

引用

Photomask Technology 2023

作者： Brouns, Derk Cloin, Christian Hossain, Tahmid Nedanovska, Elena ASML Netherlands B.V. De Run 6501 Veldhoven5504 DR Netherlands

ISBN: (纸本)9781510667501

Since the introduction of EUv, ASML and its industry partners have continuously improved the reticle defectivity levels in the volume manufacturing flows. In this paper we will show the progress over the years in reticle defectivity performance and what was done to achieve this. Next, an outlook of the defectivity improvements of the next product, NXE:3800 will be given. Finally, on the longer term, it will be shown how defectivity mitigation will be developed in the future platforms. In detail, these future developments extend the defect mitigations from the current cleanliness and flow optimizations further into the electrostatic realm. An overview will be given of the improvements planned in the EUv scanner, and the necessary changes needed on the EUv reticle infrastructure to fully benefit from these improvements. With all changes implemented it will be shown that electrostatic particle control can achieve a reticle defectivity reduction by more than 50%. © 2023 SPIE.

关键词： Electrostatics

来源：评论

学校读者我要写书评

暂无评论

Fast Readout of Innovative Glow Discharge Detector Focal Plane Arrays for Affordable Millimeter Wave Imaging: design, Implementation, and Advancements 9

Fast Readout of Innovative Glow Discharge Detector Focal Pla...

引用

Emerging Imaging and Sensing Technologies for Security and Defence IX 2024

作者： Ramachandra Kurup, Arun Rozban, Daniel Azulay, Yehuda Kopeika, Natan S. Yitzhaky, Yitzhak Abramovich, Amir Department of Electrical and Electronic Engineering Ariel University Israel School of Electrical and Computer Engineering Department of Electro-optics and Photonics Engineering Ben-Gurion University of the Negev Beer Sheva Israel

ISBN: (数字)9781510681170

ISBN: (纸本)9781510681163

This study introduces an affordable approach to developing a millimeter-wave (MMW) focal plane array (FPA) using glow discharge detectors (GDDs) with rapid readout capabilities. The system investigates the effect of MMW incidence on GDD discharge current and employs a scanning mechanism with a step motor for sub-pixel imaging. The experimental setup features an 8x8 FPA with 64 GDD detectors, MMW source, optical components, and a data acquisition platform. Leveraging electrical detection and a signal processing algorithm, the system captures low-intensity MMW signals with each GDD value corresponding to a pixel in the image. The Fourier transform (FFT) is used to extract information from the modulated signals. The FPA demonstrated an improved imaging duration, reducing acquisition time by 75% compared to prior studies, with an 8x8 image captured in just 4 seconds. Responsivity was measured at 21.8 v/W, detecting signals as weak as 0.95 nW. These advancements offer significant benefits for time-sensitive applications like security and dynamic object tracking. The study proposes enhancing resolution through larger arrays and integrating image processing with AI techniques to further improve performance. This research provides a cost-effective solution for MMW imaging, addressing existing detector limitations. © 2024 SPIE.

关键词： Glow discharges

来源：评论

学校读者我要写书评

暂无评论

Mid-wavelength InAs/GaSb type-Ⅱ superlattice barrier detector with nBn design and M barrier

引用

Optoelectronics Letters 2023年第10期19卷 577-582页

作者： LIU Zhaojun ZHU Lianqing LU Lidan DONG Mingli ZHANG Dongliang ZHENG Xiantong School of Opto-Electronic Engineering Changchun University of Science&TechnologyChangchun130022China Key Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument Beijing Information Science&Technology UniversityBeijing100192China Key Laboratory of Optical Fiber Sensing and System Beijing Information Science&Technology UniversityBeijing100016China

This study reports the performance of an InAs/GaSb type-Ⅱ superlattices(T2SLs) detector with nBn structure for mid-wavelength infrared(MWIR) detection. An electronic band structure of M barrier is calculated using 8-band k·p method, and the nBn structure is designed with the M barrier. The detector is prepared by wet etching, which is simple in manufacturing process. X-ray diffraction(XRD) and atomic force microscope(AFM) characteristics indicate that the detector material has good crystal quality and surface morphology. The saturation bias of the spectral response measurements at 77 K is 300 m v, and the device is promising to work at a temperature of 140 K. Energy gap of T2SLs versus temperature is fitted by the varshni curve, and zero temperature bandgap Eg(0), empirical coefficients α and β are extracted. A dark current density of 3.2×10-5A/cm2and differential resistance area(RA) product of 1.0×104Ω·cm2are measured at 77 K. The dominant mechanism of dark current at different temperature ranges is analyzed. The device with a 50% cutoff wavelength of 4.68 μm exhibits a responsivity of 0.6 A/W, a topside illuminated quantum efficiency of 20% without antireflection coating(ARC), and a detectivity of 9.17×1011cm·Hz1/2/W at 77 K and 0.3 v.

关键词： InAs/GaSb barrier structure

来源：评论

学校读者我要写书评

暂无评论

Forging measurement using passive stereo vision 13

Forging measurement using passive stereo vision

引用

optical Measurement Systems for Industrial Inspection XIII 2023

作者： vítek, Petr Hurník, Jakub vaverka, Ondřej Koutný, Daniel Dept. of Reverse Engineering and Additive Technologies Institute of Machine and Industrial Design Brno University of Technology Faculty of Mechanical Engineering Technická 2896/2 Brno616 69 Czech Republic

ISBN: (数字)9781510664463

ISBN: (纸本)9781510664456

Dimensional inspection during manufacturing of high-temperature forging workpieces is still an unsolved research topic. In this work, an approach to reconstruct the hot forging surface using passive stereovision was proposed. The challenges are the irregular thermal radiation of the forging in the visible spectrum, which is affected by scales, heat haze, and an unstable environment. Unlike the approaches presented in the literature, we use the radiated light, without an external light source. High dynamic resolution images were used to image the forging surface with highly varying brightness. The effect of optical filtering on the contrast of the fine surface structure was investigated and evaluated by spectral analysis of the images, with the best results obtained in the green spectrum. A comparison of feature detectors was performed for the specific surface structure of the hot forging. The best results in terms of density of reconstructed points were obtained using the KAZE method. The final verification of the achievable accuracy was performed in a measurement volume of approx. 500×400×350 mm. An 877 °C hot steel pipe sample was measured with a single point standard deviation error of 0.28 mm, which is an order of magnitude higher than under ideal conditions, but acceptable in comparison with manufacturing tolerances. Further developments could be related to the application of dense image matching, further investigation of interfering effects, and application of the proposed methods in the industrial environment. © 2023 SPIE.

关键词： Feature extraction

来源：评论

学校读者我要写书评

暂无评论

design Methodologies of InP nanopyramid array based low cost hybrid solar cells

引用

Materials Today: Proceedings 2022年 58卷 677-681页

作者： Kumar Agnihotri, Suneet Prashant, D.v. Samajdar, D.P. Dept. of ECE Indian Institute of Information Technology Design & Manufacturing Madhya Pradesh Jbalapur482005 India

In recent years, the use of organic materials have gained the interest for photovoltaic (Pv) applications owing to its ability to yield maximum throughput, solution phase processes, thereby resulting in low cost power generation. To obtain the twin benefits of low cost and high efficiency, Pv cell researchers are investigating the organic–inorganic (hybrid) based solar cells (SCs). Hybrid Solar cells (HSCs) combine organic and inorganic materials in order to make use of the relatively inexpensive manufacturing of organic photovoltaics (OPv) and gaining multiple benefits from the inorganic component, such as tunable optical properties, superior electronic properties and high power conversion efficiency (PCE). III-v based nanostructures showed exceptional light capturing and charge transport properties, and can be easily combined with organic materials to build HSCs. In this paper, we have investigated the optical and electrical properties of the PTB7:PC71BM/InP truncated nanopyramid (TNP) array based HSC. The investigated structure shows higher optical absorption and optical current density (Jsc) of ∼ 25.4 mA/cm2 when compared to their organic and inorganic counterparts. The photogeneration profile and electric field of the inorganic and HSC are simulated and compared. In addition, the electrical analysis of HSC shows PCE of 18.4% which outperforms their organic and inorganic counterparts. © 2022

关键词： optical properties

来源：评论

学校读者我要写书评

暂无评论

Iterative and inverse design of a segmented reflector for uniform illumination on the road 22

Iterative and inverse design of a segmented reflector for un...

引用

Conference on current developments in Lens design and optical engineering XXII

作者： Wu, Rubing Alisafaee, Hossein Rose Hulman Inst Technol Dept Phys & Opt Engn 5500 Wabash Ave Terre Haute IN 47803 USA

ISBN: (数字)9781510644670

ISBN: (纸本)9781510644670

We demonstrate an iterative and inverse design of a segmented reflector used to illuminate the road with a uniform light distribution and reduced glare to the oncoming traffic. design is set to meet the StvZO standard. The maximum brightness obtained is 1460 candela, which is five times brighter than a conventional headlamp of urban shared electric scooters and bicycles, resulting in improved visibility in dark environments. A prototype was built and tested at various environments. The tolerance analysis showed no negative influence on the desired standard light distribution. In addition to this iterative approach, a ray tracing code has been developed for inverse design and to map a desired uniform road illumination pattern back to the candela sensor for corresponding reflector design.

关键词： optical design Illumination Reflector design design for manufacturing Lucid-Shape

来源：评论

学校读者我要写书评

暂无评论

Structural, optical, photoluminescence, magnetic and electrochemical supercapacitor application of tin oxide nanoparticles

引用

Materials Today: Proceedings 2023年 80卷 1591-1598页

作者： Manikandan, E. Kannan, J.C. Devabharathi, v. Pushpa, S. Ahmad Mala, Nazir Department of Physics K S R Institute for Engineering and Technology Tamil Nadu Tiruchengode-637215 India Department of Physics Annamalai University Annamalainagar 608 002 India

The present work deals with the structural, thermal, morphological, optical, electrochemical and magnetic behavior probes of tetragonal tin dioxide (SnO2) nanoparticles (NPs) that were synthesized via chemical precipitation technique. The thermal, crystallinity, grain size, optical, magnetic and capacitive behaviors of the product were investigated by TG-DTA, XRD, SEM, HR-TEM, Uv–vis DRS, PL, Cv and vSM studies at 700 °C. The X-ray diffraction result shows the well-crystallized tetragonal structure and SEM with HR-TEM results shows the spherical morphology. The broadband visible emission band is noted in the luminescence spectrum and also the predictable band gap energy is concerning 3.94 ev. The magnetic properties were studied with the high value of magnetic moment 0.7488 × 10-3 emu g−1 at RT for SnO2 NPs displaying superparamagnetic behavior. The electrochemical performance was deliberated by cyclic voltammetry. A Specific capacitance value of 176F g−1 is obtained at a scan rate for 5 mvs−1 in SnO2NPs at 700 °C. © 2023

关键词： Magnetic moments

来源：评论

学校读者我要写书评

暂无评论

An Air‑Rechargeable Zn Battery Enabled by Organic–Inorganic Hybrid Cathode

引用

Nano-Micro Letters 2023年第4期15卷 138-152页

作者： Junjie Shi Ke Mao Qixiang Zhang Zunyu Liu Fei Long Li Wen Yixin Hou Xinliang Li Yanan Ma Yang Yue Luying Li Chunyi Zhi Yihua Gao Wuhan National Laboratory for Optoelectronics(WNLO)and School of Physics Center for Nanoscale Characterization&Devices(CNCD)Huazhong University of Science and Technology(HUST)Wuhan 430074People’s Republic of China Guangxi Key Laboratory of Optical and Electronic Materials and Devices College of Materials Science and EngineeringGuilin University of TechnologyGuilin 541004People’s Republic of China Hong Kong Center for Cerebro-Cardiovascular Health Engineering Hong Kong SAR 999077People’s Republic of China Hubei Key Laboratory of Critical Materials of New Energy Vehicles and School of Mathematics Physics and Optoelectronic EngineeringHubei University of Automotive TechnologyShiyan 442002People’s Republic of China Information Materials and Intelligent Sensing Laboratory of Anhui Province Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of EducationInstitutes of Physical Science and Information TechnologyAnhui UniversityHefei 230601People’s Republic of China

Self-charging power systems collecting energy harvesting technology and batteries are attracting extensive *** solve the disadvantages of the traditional integrated system,such as highly dependent on energy supply and complex structure,an airrechargeable Zn battery based on MoS_(2)/PANI cathode is *** from the excellent conductivity desolvation shield of PANI,the MoS_(2)/PANI cathode exhibits ultra-high capacity(304.98 mAh g^(−1) in N_(2) and 351.25 mAh g^(−1) in air).In particular,this battery has the ability to collect,convert and store energy simultaneously by an airrechargeable process of the spontaneous redox reaction between the discharged cathode and O2 from *** air-rechargeable Zn batteries display a high open-circuit voltage(1.15 v),an unforgettable discharge capacity(316.09 mAh g^(−1) and the air-rechargeable depth is 89.99%)and good air-recharging stability(291.22 mAh g^(−1) after 50 air recharging/galvanostatic current discharge cycle).Most importantly,both our quasi-solid zinc ion batteries and batteries modules have excellent performance and *** work will provide a promising research direction for the material design and device assembly of the next-generation self-powered system.

关键词： Air-rechargeable MoS_(2)/PANI Cathode Desolvation shield Energy storage mechanism Zn batteries module

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：