检索结果-内蒙古大学图书馆

2024 IEEE International Conference on Modeling, Simulation and Intelligent Computing, MoSICom 2024

作者： Sathish, N. Pugsley, William M Chakraborthy, Apurba Central Engineering-FIP Marvell India. Pvt. Ltd Bengaluru India Optical Phy Marvell Technology Italy S.r.l Pavia Italy BITS-PILANI Department of Eee K K Birla Goa Campus GOA India

ISBN: (纸本)9798331533311

The comparator is a crucial component of an Analog-to-Digital Converter(ADC). In this work, we developed a power-efficient Time-Domain Comparator(TDC) for high-speed Data Converters. This circuit minimizes static power dissipation by using the Clock(CLK) to control the current-starved type inverter. The circuit operates on the principle of voltage-to-Time Conversion. The comparator effectively converts the analog input voltage into a time delay, creating a phase difference between the input and reference signals. When the input voltage(vIN) is higher than the reference voltage(vREF), the TDC produces a logic low at the output. If the input voltage(vIN) is lower than the reference voltage(vREF), the TDC produces a logic high at the output. The circuit is designed to operate at a speed of 1GHz with a supply voltage of 1v. It consumes 28uW of power and provides a FOM(figure of merit) of 28.03fJ/Conversion. The dead zone voltage measures 19mv with an average delay of 81pS. This circuit was designed using TSMC 12FF and simulated using Cadence virtuoso. © 2024 IEEE.

关键词： Analog-to-Digital Converter(ADC) Comparator High-Speed Low-Power Time-Domain Comparator(TDC)

来源：评论

学校读者我要写书评

暂无评论

A closed form analytical model for threshold switching mechanism of chalcogenide-based devices 8

A closed form analytical model for threshold switching mecha...

引用

8th Symposium on Novel Photoelectronic Detection Technology and Applications

作者： Jiang, Chunsheng Xin, Xingchen Chen, Hongying College of Electronics Engineering Guangxi Normal University Guilin541004 China

ISBN: (数字)9781510653122

ISBN: (纸本)9781510653115

In this work, an analytical current-voltage (I-v) model of chalcogenide-based devices has been proposed by solving the thermally assisted hopping conduction and energy transfer equations. The subthreshold current and threshold voltage could be predicted by this model. Next, the well-known and experimental linear relationship between threshold voltage and thickness of chalcogenide glass has been deduced from the analytical model directly and the underlying physics of threshold switching is also elaborated according to the model. Besides, the constant-power condition of threshold switching point is also derived from the proposed model. The calculated results from the analytical model agree well with the numerical calculation. The proposed model can help in the design optimization and simulation of nanoscale phase-change memories, relaxation oscillations, and steep slope transistors based on chalcogenide glass materials. © 2022 SPIE

关键词： Chalcogenides

来源：评论

学校读者我要写书评

暂无评论

Autonomous vehicles: Steering the Future of Transportation with Self-Driving Technology and Advanced AI Systems 5

Autonomous Vehicles: Steering the Future of Transportation w...

引用

5th IEEE Global Conference for Advancement in Technology, GCAT 2024

作者： Daniel Nareshkumar, M. Reddy, Desidi Narsimha Sowmiya, A. Pandi, v. Samuthira Sateesh, Rayala Hindumathy, N. Simats University Saveetha School of Engineering Saveetha Institute of Medical and Technical Sciences Department of Electronics and Communication Engineering Tamil Nadu Chennai India Soniks Consulting Llc TX United States Rajalakshmi Engineering College Department of Eee Thandalam Chennai India Chennai Institute of Technology Centre for Advanced Wireless Integrated Technology Tamil Nadu Chennai India Mlr Institute of Technology Department of Ece Hyderabad India Vel Tech Rangarajan Dr.Sagunthala R & D Institute of Science and Technology Department of Artificial Intelligence and Machine Learning Avadi Chennai India

ISBN: (纸本)9798350376685

Autonomous vehicles (Avs) are a game-changer in the transportation industry;they will alter cityscapes, cut down on accidents, and reimagine how people experience mobility. This study investigates the complex relationship between autonomous vehicles and high-tech AI systems, looking at how these two technologies can influence transportation in the future. The paper highlights crucial developments in sensor fusion, machine learning algorithms, and real-time data processing that are essential for the development of fully autonomous systems by analyzing the present status of Av technology. In the first part of the study, the basic technologies that support Avs are described. These technologies include LiDAR, radar, cameras, and GPS. When taken together, they allow Avs to perceive their surroundings and locate themselves. After that, it delves into how AI is helping Avs understand sensor data, make judgments in real-time, and carry out complicated maneuvers, showcasing how advancements in deep learning, neural networks, and predictive analytics are powering these capabilities. Integrating Avs into current transportation infrastructures presents both potential and obstacles, which the paper delves into. Critical situation safety, legal frameworks, cybersecurity risks, and AI decision-making ethics are all covered. In addition to the environmental advantages of improved traffic flow and decreased emissions, the study delves into the possible socioeconomic implications, including shifts in urban design, public transit, and the labor market. The research delves into the existing deployment tactics and the path for scaling Av operations through a thorough analysis of case studies, pilot projects, and industry reports. It determines how prepared different groups are to accept this revolutionary technology, including the general public, lawmakers, and manufacturers. To sum up, the study highlights how important it is for academic institutions, business executives, and governme

关键词： Autonomous vehicles

来源：评论

学校读者我要写书评

暂无评论

A review of Type v composite pressure vessels and automated fibre placement based manufacturing

引用

COMPOSITES PART B-engineering 2023年 253卷

作者： Air, Alexander Shamsuddoha, Md Prusty, B. Gangadhara UNSW ARC Training Ctr Automated Manufacture Adv Composi Sch Mech & Mfg Engn Sydney NSW 2052 Australia BAE Syst Australia Canberra Australia

Hydrogen is emerging as a promising future energy medium in a wide range of industries. For mobile applica-tions, it is commonly stored in a gaseous state within high-pressure composite overwrapped pressure vessels (COPvs). The current state of the art pressure vessel technology, known as Type v, eliminates the internal polymer gas barrier used in Type Iv vessels and instead relies on carbon fibre laminate to provide structural properties and prevent gas leakage. Achieving this functionality at high pressure poses several engineering challenges that have thus far prohibited commercial application. Additionally, the traditional manufacturing process for COPvs, filament winding, has several constraints that limit the design space. Automated fibre placement (AFP), a highly flexible, robotic composites manufacturing technique, has the potential to replace filament winding for composite pressure vessel manufacturing and provide pathways for further vessel optimi-sation. A combination of both AFP and Type v technology could provide an avenue for a new generation of high-performance composite pressure vessels. This critical review presents key work on industry-standard Type Iv vessels alongside the current state of Type v CPv technology including manufacturing developments, challenges, cost, relevance to commercial standards and future fabrication solutions using AFP. Additionally, a novel Type v CPv design concept for a two-piece AFP produced vessel is presented.

关键词： A Carbon fibre Tow E Automation Filament winding Composite pressure vessel

来源：评论

学校读者我要写书评

暂无评论

Coherent Data Transmission Using Multiplexing for a DWDM Communication System 2

Coherent Data Transmission Using Multiplexing for a DWDM Com...

引用

2nd IEEE Mysore Sub Section International Conference, MysuruCon 2022

作者： vidhya, N. Seethalakshmi, v. Monisha, R. Dhanasekar, J. Gurunathan, v. Rajanandhini, C. Kpr Institute of Engineering and Technology Department of Electronics and Communication Engineering Coimbatore India Sri Eshwar College of Engineering Department of Electronics and Communication Engineering Coimbatore India Dr Mahalingam College of Engineering Department of Electronics and Communication Engineering Coimbatore India Periyar Maniammai Institute of Science & Technology Department of Electronics and Communication Engineering Thanjavur India

ISBN: (数字)9781665497909

ISBN: (纸本)9781665497909

One fibre can transmit a combination of a number of optical wavelengths called DWDM (Dense Wavelength Division Multiplexing). With the use of laser technology, the bandwidth of current fibre-optic backbones can be increased. It makes it possible for fibre optic networks to simultaneously transmit signals of various wavelengths. Mux/Demux are two integral elements of a DWDM system. In this paper, data will be transmitted and received serially using combinational logics such as multiplexer and decoder (de-mux). Both multiplexer and decoder will be implemented using 2 separate verilog files. One more verilog file will be created to cover up the multiplexer as a transmitter and decoder as a receiver to configure a serial communication system. For the synchronisation purpose, the counter is associated with the circuit. This hybrid design methodology will help in managing design complexity, allowing parallel development and promoting reliability of communication. © 2022 IEEE.

关键词： Dense wavelength division multiplexing

来源：评论

学校读者我要写书评

暂无评论

High optical power pulsed laser structures at 905nm for automotive LIDAR 22

High optical power pulsed laser structures at 905nm for auto...

引用

Novel In-Plane Semiconductor Lasers XXII 2023

作者： Krakowski, M. Meghnagi, M. Afuso-Roxo, P. Resneau, P. Izquierdo, E. Theveneau, C. vinet, E. Robert, Y. Legoec, J.P. Garcia, M. Parillaud, O. Gerard, B. III-V Lab. 1 av. Augustin Fresnel Palaiseau91767 France

ISBN: (纸本)9781510659858

In the area of smart mobility, a major challenge is to insure secure transportation. LIDAR are acknowledged as key enablers for Advanced Driver Assistance Systems (ADAS) and autonomous driving. Our approach for the Time of Flight (ToF) LIDAR is to use an optical Phase Array (OPA), for the optical beam steering, together with a high peak power and high beam quality laser diode emitting at 905nm. To the best of our knowledge, a high power laser diode at 905nm directly compatible with an OPA does not exist. We report on the design, realization and characterization of laser diode, with different geometries, emitting several watts (>10W) in a short pulse (typically 10ns) operation, in order to be coupled into the silicon nitride waveguide input of the OPA developed by the CEA LETI. The high power 905nm LASER coupled into the OPA, and their respective drivers, will constitute the optical steerable source, without no moveable parts, of the medium range TOF LIDAR developed within the European vIZTA project. The Aluminum free active region laser structure have been grown by Metal Organic vapor Phase Epitaxy (MOvPE) on 3" GaAs substrates. It contain a single GaInAsP compressively strained Quantum Well (QW) for emission at 905nm, located in a GaInP waveguide. This structure exhibits high internal quantum efficiency qi of 0.99, low internal losses i of 1.3cm-1 and low transparency current density J0 of 59A/cm2. Peak optical powers of 11.4W at 15.4A and 7.7W at 10.2A are obtained, respectively, for two different geometries. © 2023 SPIE.

关键词： III-v semiconductors

来源：评论

学校读者我要写书评

暂无评论

On the design of Electron-optical Systems of Microwave ED for the 220 GHz

On the Design of Electron-Optical Systems of Microwave ED fo...

引用

International Conference on Actual Problems of Electron Devices engineering, (APEDE)

作者： S.P. Morev N.A. Sychev JSC “RPC “ISTOK” named after Shokin” Fryazino Russia

ISBN: (数字)9798350393316

ISBN: (纸本)9798350393323

The results of the design of electron-optical systems for electro-vacuum O-type devices designed to operate in the 220 GHz band are presented. The fundamental necessity of taking into account the phase volume of the electron flow at all stages of designing an electron gun and magnetic focusing system is shown. An example is given of designing an EOS with a current of 0.15 A at a voltage of 22400 v in a unipolar magnetic field with an amplitude of 0.45 Gs.

关键词： Millimeter wave devices Earth Observing System Transportation Magnetic devices Focusing voltage Microwave devices Electron guns Magnetic fields Electrons

来源：评论

学校读者我要写书评

暂无评论

X-ray simulations with gvXR as a useful tool for education, data analysis, set-up of CT scans, and scanner development 15

X-ray simulations with gVXR as a useful tool for education, ...

引用

15th SPIE Conference on developments in X-Ray Tomography

作者： vidal, Franck P. Afshari, Shaghayegh Ahmed, Sharif Atkins, Carolyn Béchet, Éric Bellot, Alberto Corbí Bosse, Stefan Chahid, Younes Chou, Cheng-Ying Culver, Robert Dixon, Lewis Friemann, Johan Garbout, Amin Hatton, Clémentine Henry, Audrey Leblanc, Christophe Leonardi, Alberto Létang, Jean Michel Lipscomb, Harry Manchester, Tristan Meere, Bas Middleburgh, Simon Mitchell, Iwan Perera, Liam Puig, Martí Tugwell-Allsup, Jenna Scientific Computing Ada Lovelace Centre Science Technology Facilities Council United Kingdom School of Computer Science & Engineering Bangor University United Kingdom Department of Biomechatronics Engineering National Taiwan University Taiwan DIAD Beamline Diamond Light Source United Kingdom UK Astronomy Technology Centre Royal Observatory Edinburgh United Kingdom Département d’Aérospatiale et Mécanique Université de Liège Belgium Escuela Superior de Ingeniería y Tecnología Universidad Internacional de La Rioja Spain Department of Computer Science University of Koblenz Koblenz Germany Department of Mechanical Engineering University of Siegen Siegen Germany The Manufacturing Technology Centre United Kingdom Department of Industrial and Materials Science Chalmers University of Technology Sweden Henry Royce Institute Henry Moseley X-Ray Imaging Facility Department of Materials The University of Manchester United Kingdom Scalian DS Rennes France INSA-Lyon Université Claude Bernard Lyon 1 CNRS Inserm CREATIS UMR 5220 U1294 Lyon France Department of Mechanical Engineering Eindhoven University of Technology Netherlands Department of Engineering Science University of Oxford United Kingdom Ysbyty Gwynedd United Kingdom

ISBN: (纸本)9781510679641

gvirtualXray (gvXR) is an open-source framework that relies on the Beer-Lambert law to simulate X-ray images in real time on a graphics processor unit (GPU) using triangular meshes. A wide range of programming languages is supported (C/C++, Python, R, Ruby, Tcl, C#, Java, and GNU Octave). Simulations generated with gvXR have been benchmarked with clinically realistic phantoms (i.e. complex structures and materials) using Monte Carlo (MC) simulations, real radiographs and real digitally reconstructed radiographs (DRRs), and X-ray computed tomography (CT). It has been used in a wide range of applications, including real-time medical simulators, proposing a new densitometric radiographic modality in clinical imaging, studying noise removal techniques in fluoroscopy, teaching particle physics and X-ray imaging to undergraduate students in engineering, and XCT to masters students, predicting image quality and artifacts in material science, etc. gvXR has also been used to produce a high number of realistic simulated images in optimization problems and to train machine learning algorithms. This paper presents applications of gvXR related to XCT. © 2024 SPIE.

关键词： Computerized tomography

来源：评论

学校读者我要写书评

暂无评论

design considerations and applications of a biomedical test bench development kit

Design considerations and applications of a biomedical test ...

引用

作者： Tautorat, Carsten Kamke, Frank Lebahn, Kerstin Grabow, Niels Schmidt, Wolfram Institute for Biomedical Engineering Rostock University Medical Center Rostock Germany Institute for Implant Technology and Biomaterials e.V. Rostock Germany

Applications and requirements for biomedical test benches are often quite different, but there is always a need to monitor and usually to control processes. Commercially available development systems can be used to build simple laboratory setups up to industrial systems but are limited with respect to high costs and information for required validation. A test bench development kit is presented which ensures high compatibility for prospective developments, adaptations and embedding of sensors and actuators. The development kit is based on a printed circuit board built around the single-board computer Raspberry PI. Supporting circuitry for power control, logics and special functions are implemented. Several types of peripheral devices can be connected via two serial bus standards (I2C or RS-485). current applications demonstrate the achieved level of automation and process control. © 2022 The Author(s), published by De Gruyter.

关键词： Actuators

来源：评论

学校读者我要写书评

暂无评论

Passivation of Inverted Perovskite Solar Cells by Trifluoromethyl-Group-Modified Triphenylamine Dibenzofulvene Hole Transporting Interfacial Layers

引用

Journal of Physical Chemistry C 2023年第13期127卷 6167-6178页

作者： Sholihah, Nurlailatush Cheng, Han-Ching Wang, Jhong-Ci Ni, Jen-Shyang Yu, Yang-Yen Chen, Chih-Ping Chen, Yung-Chung Department of Chemical and Materials Engineering National Kaohsiung University of Science and Technology Kaohsiung City80778 Taiwan Department of Materials Engineering Ming Chi University of Technology 84 Gunjuan Road New Taipei City24301 Taiwan National Kaohsiung University of Science and Technology Kaohsiung City80778 Taiwan

In this work, we synthesized trifluoromethyl group series modified triphenylamine dibenzofulvenes, named as CC-1-3, as a hole transporting interfacial layer to obtain well-matched energy levels and long-term stability features in NiOx-based inverted perovskite solar cells. The optical and thermal properties of these new compounds were investigated. All the compounds were combined with NiOx and formed layer by layer as hole transporting layers (HTLs). The morphology, energy level, and charge transfer resistance were all compared. The NiOx/CC-3 bilayer-based architecture improved the energy level alignment, film morphology, crystallinity, and hole transportation, allowing for a high-quality perovskite layer and interfacial contact behavior. As a result, this inverted cell significantly improved open-circuit voltage (vOC), short current density (JSC), fill factor (FF), and power conversion efficiency (PCE) values up to 21.66 mA cm-2, 1.105 v, 79.33%, and 19.82%, respectively. Remarkably, the NiOx/CC-3 device had negligible hysteresis and long-term stability, retaining over 90% of its original efficiencies under argon and over 80% in the ambient atmosphere after 40 days. This paper shows a new chemical design, particularly for the trifluoromethyl group effect, and a complete understanding of the bilayer HTL technique and its promise for producing efficient cell performance. © 2023 American Chemical Society.

关键词： Perovskite solar cells

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：