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作者： Bang, Grace Barash, Guy Bea, Ryan Cali, Jacques Castillo-Effen, Mauricio Chen, Xin Cynthia Chhaya, Niyati Dhoopar, Rohan Dumancic, Sebastijan Espinoza, Huáscar Farchi, Eitan Fioretto, Ferdinando Fuentetaja, Raquel Galley, Michel Geib, Christopher Hernández-Orallo, José Huang, Xiaowei Keren, Sarah Kim, Seokhwan Jaidka, Kokil Liu, Xiaomo Lu, Tyler Ma, Zhiqiang Mallah, Richard McDermid, John Michalowski, Martin Mirsky, Reuth Héigeartaigh, Seán Ó. Ramachandran, Deepak Segovia-Aguas, Javier Shaban-Nejad, Arash Shehory, Onn Shwartz, Vered Srivastava, Siddharth Talamadupula, Kartik Tang, Jian Zhang, Dell Zhang, Jian S&P Global. Western Digital University of Southampton United Kingdom Blue Prism Group PLC Lockheed Martin's Advanced Technology Laboratories ArlingtonVA United States University of Hong Kong Hong Kong Adobe Research Google Research Katholieke Universiteit Leuven Belgium Commissariat à ĺÉnergie Atomique France IBM Research Department of Electrical Engineering and Computer Science Syracuse University United States Universidad Carlos III de Madrid Spain Microsoft Research AI SIFT LLC Universitat Politècnica de València Spain Leverhulme Centre for the Future of Intelligence United Kingdom Department of Computer Science University of Liverpool United Kingdom National University of Singapore Singapore Harvard School of Engineering and Applied Sciences in the of Fields of Multiagent Environment Design and Goal Recognition Design Amazon Alexa AI Future of Life Institute United States University of York Assuring Autonomy International Program United Kingdom University of Minnesota School of Nursing MinneapolisMN United States University of Texas at Austin AustinTX United States Institut de Robòtica i Informàtica Industrial Spanish Council for Scientific Research Technical University of Catalonia Spain Oak Ridge National Laboratory Center for Biomedical Informatics Department of Pediatrics University of Tennessee Health Science Center United States Bar Ilan University Israel University of Washington SeattleWA United States Autonomous Agents and Intelligent Robots lab of the School of Computing Informatics Decision Systems Arizona State University United States DiDi AI Labs School of Industrial and System Engineering Georgia Institute of Technology United States University of London United Kingdom Microsoft Azure

The Association for the Advancement of Artificial Intelligence 2020 Workshop Program included twenty-three workshops covering a wide range of topics in artificial intelligence. This report contains the required reports, which were submitted by most, but not all, of the workshop chairs. Copyright © 2020, Association for the Advancement of Artificial Intelligence. All rights reserved.

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Impact of the local p-well substrate parameters on the electrical performance of the Double-Emitter Reduced-Surface-Field Horizontal Current Bipolar Transistor 40

Impact of the local p-well substrate parameters on the elect...

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40th International Convention on Information and Communication Technology, Electronics and microelectronics, MIPRO 2017

作者： Koričić, Marko Žilak, Josip Suligoj, Tomislav University of Zagreb Faculty of Electrical Engineering and Computing Department of Electronics Microelectronics Computing and Intelligent Systems Micro and Nano Electronics Laboratory Zagreb Croatia

ISBN: (纸本)9789532330922

Double-Emitter Reduced-Surface-Field Horizontal Current Bipolar Transistor is analyzed by the device simulations. Geometrical parameters of the local p-well substrate, which is used to introduce the second drift region are investigated. It is shown that the length of the p-well lpw=0.5 μm is sufficient to obtain efficient electric field shielding and BVCEO independent of the transistor current gain. The analysis of the distance between the extrinsic base and the p-well region (dpw) shows that the optimum dpw exists. The optimum structure with lpw=0.5 μm and dpw=0.6 μm has BVCEO=30 V and fT=7 GHz. With assumed p-well mask misalignment tolerances, a good trade-off between BVCEO and fT is achieved with transistors having the fT·BVCEO at the Johnson's limit. © 2017 Croatian Society MIPRO.

关键词： Transistors

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Analysis of hot carrier-induced degradation of Horizontal Current Bipolar Transistor (HCBT) 40

Analysis of hot carrier-induced degradation of Horizontal Cu...

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40th International Convention on Information and Communication Technology, Electronics and microelectronics, MIPRO 2017

作者： Žilak, J. Koričić, M. Suligoj, T. University of Zagreb Faculty of Electrical Engineering and Computing Department of Electronics Microelectronics Computing and Intelligent Systems Micro and Nano Electronics Laboratory Zagreb Croatia

ISBN: (纸本)9789532330922

The relative contribution of the hot electrons and hot holes to the reliability degradation of the Horizontal Current Bipolar Transistor (HCBT) is investigated by TCAD simulations. The base current (IB) degradation, obtained by the reverse-bias emitter-base (EB) and mixed-mode stress measurements, is caused by a hot carrier-induced interface trap generation at silicon-oxide interfaces above and below HCBT's emitter n+ polysilicon region. The simulation analysis is performed on the HCBT structures with different n-collector doping profiles and n-hill silicon sidewall surface treatment. The used lucky electron injection model distinguishes the hot carrier type responsible for the damage and makes it possible to predict the HCBT reliability behavior. It is shown that the majority of traps under the reverse-bias EB stress is located at the top interface and is caused by the hot holes, whereas the hot electrons produce the traps under the mixed-mode stress, located mostly at the bottom interface. © 2017 Croatian Society MIPRO.

关键词： microelectronics

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A methodological approach to identify policy priorities of municipalities in Greece

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Energy Procedia 2018年 153卷 376-382页

作者： Alecos Kelemenis Panagiota Galiatsatou Decision Support Systems Laboratory School of Electrical and Computer Engineering National Technical University of Athens Iroon Politechniou 9 15780 Athens Greece Environmental Design School of Science and Technology Hellenic Open University Parodos Aristotelous 18 26335 Patra Greece Hydraulics Laboratory Division of Hydraulics and Environmental Engineering Department of Civil Engineering Aristotle University of Thessaloniki Thessaloniki 54124 Greece

This study introduces a proposed framework encompassing all pivotal sectors a municipality deals with contributing to sustainable development at a local level. This framework is tailor-made to fit into the Greek environment in which municipalities operate. Furthermore, by making use of an appropriate weighting method, considering the challenges of the working environment in Greek municipalities, the study proposes a specific methodology to better understand the policy priorities of municipalities. This information can be used to adjust and better align local policies with national strategies and with the needs and priorities of citizens.

关键词： Sustainable cities urban sustainable development urban planning city sustainability framework weighting methods

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Radial Spin Texture of the Weyl Fermions in Chiral Tellurium

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Physical Review Letters 2020年第21期125卷 216402-216402页

作者： G. Gatti D. Gosálbez-Martínez S. S. Tsirkin M. Fanciulli M. Puppin S. Polishchuk S. Moser L. Testa E. Martino S. Roth Ph. Bugnon L. Moreschini A. Bostwick C. Jozwiak E. Rotenberg G. Di Santo L. Petaccia I. Vobornik J. Fujii J. Wong D. Jariwala H. A. Atwater H. M. Rønnow M. Chergui O. V. Yazyev M. Grioni A. Crepaldi Institute of Physics Ecole Polytechnique Fédérale de Lausanne (EPFL) CH-1015 Lausanne Switzerland Lausanne Centre for Ultrafast Science (LACUS) Ecole Polytechnique Fédérale de Lausanne (EPFL) CH-1015 Lausanne Switzerland National Centre for Computational Design and Discovery of Novel Materials MARVEL Ecole Polytechnique Fédérale de Lausanne (EPFL) CH-1015 Lausanne Switzerland Department of Physics University of Zurich Winterthurerstrasse 190 8057 Zurich Switzerland Laboratoire de Physique des Matériaux et Surfaces CY Cergy Paris Université 95031 Cergy-Pontoise France Université Paris-Saclay CEA CNRS LIDYL 91191 Gif-sur-Yvette France Laboratory of Ultrafast Spectroscopy ISIC Ecole Polytechnique Fédérale de Lausanne (EPFL) CH-1015 Lausanne Switzerland Advanced Light Source Lawrence Berkeley National Laboratory Berkeley California 94720 USA Physikalisches Institut and Würzburg-Dresden Cluster of Excellence ct.qmat Universität Würzburg 97074 Würzburg Germany Elettra Sincrotrone Trieste Strada Statale 14 km 163.5 34149 Trieste Italy CNR-IOM TASC Laboratory Area Science Park-Basovizza 34139 Trieste Italy Department of Applied Physics California Institute of Technology Pasadena California 91125 USA Department of Electrical and Systems Engineering University of Pennsylvania Philadelphia Pennsylvania 19104 USA

Trigonal tellurium, a small-gap semiconductor with pronounced magneto-electric and magneto-optical responses, is among the simplest realizations of a chiral crystal. We have studied by spin- and angle-resolved photoelectron spectroscopy its unconventional electronic structure and unique spin texture. We identify Kramers–Weyl, composite, and accordionlike Weyl fermions, so far only predicted by theory, and show that the spin polarization is parallel to the wave vector along the lines in k space connecting high-symmetry points. Our results clarify the symmetries that enforce such spin texture in a chiral crystal, thus bringing new insight in the formation of a spin vectorial field more complex than the previously proposed hedgehog configuration. Our findings thus pave the way to a classification scheme for these exotic spin textures and their search in chiral crystals.

关键词： Electronic structure Spin texture Topological materials Chiral symmetry Angle-resolved photoemission spectroscopy

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Response improvement of microstrip line microwave and miliwave phase shifter utilizing polymer stabilized nematic liquid crystal with UV polymerization

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IEEJ Transactions on Fundamentals and Materials 2017年第6期137卷 356-362页

作者： Bui, Van Bao Inoue, Yo Higuchi, Hiroki Kikuchi, Hirotsugu Moritake, Hiroshi Department of Electrical and Electronic Engineering National Defense Academy 1-10-20 Hashirimizu Yokosuka239-8686 Japan Design of Nano-systems Kikuchi and Okumura Laboratory Kyushu University Division of Integrated Materials 6-1 Kasugakouen Kasuga816-8580 Japan

Nowadays as the development of cell phone and satellite communications, liquid crystal materials have attracted considerable attention for realizing these electrically controllable microwave and milliwave components. As usual, nematic liquid crystal is mainly used for microstrip line (MSL) phase shifter, but when driving voltage is removed the response time is very long. In this study, we discuss about using polymer stabilized nematic liquid crystals with UV polymerization for improving the response time in MSL phase shifter in which phase shift is about two times larger than that in CPW phase shifter. © 2017 The Institute of electrical Engineers of Japan.

关键词： Nematic liquid crystals

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Simulation-Based Impedance Characterization of PDN in High-Performance Multi-Chip HTCC Packages for Avionics

Simulation-Based Impedance Characterization of PDN in High-P...

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electrical design of Advanced Packaging and systems Symposium, EDAPS

作者： Akash Dang Gurvinder Singh Shiva Prasad Jilla Rohit Sharma Krishan Kumar Atanu Mukerji VLSI Assembly and Packaging Division Semi-Conductor Laboratory-ISRO/DOS SAS Nagar India VLSI Test Division Semi-Conductor Laboratory-ISRO/DOS SAS Nagar India Silicon-Packaging-Board Division Cadence Design Systems Noida India Department of Electrical Engineering Indian Institute of Technology Ropar Rupnagar India

ISBN: (纸本)9781538665930;9781538665923

High-Speed Multi-Chip HTCC Packages for Avionics require careful considerations early in the design cycle to obtain the optimum electrical performance. Some design goals can be achieved with simple stackup or layout modifications, but others require a detailed analysis using electromagnetic field solvers [1]-[3]. This paper proposes a design methodology and various guidelines to meet the optimum electrical performance in terms of Power Integrity. The methodology presented here is based on different sections of power and ground net pairs and is supported by extensive simulation results.

关键词： Impedance Capacitance Optimization Reliability Inductance System-on-chip Aerospace electronics

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Topological-darkness-assisted phase regulation for atomically thin meta-optics

arXiv

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arXiv 2019年

作者： Wang, Yingwei Deng, Zi-Lan Hu, Dejiao Yuan, Jian Ou, Qingdong Qin, Fei Zhang, Yinan Ouyang, Xu Peng, Bo Cao, Yaoyu Guan, Bai-Ou Zhang, Yupeng He, Jun Qiu, Chengwei Bao, Qiaoliang Li, Xiangping Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications Institute of Photonics Technology Jinan University Guangzhou510632 China Hunan Key Laboratory for Super-microstructure and Ultrafast Process School of Physics and Electronics Central South University 932 South Lushan Road Changsha Hunan410083 China College of Physics and Electronic Information Huaibei Normal University Huaibei235000 China Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Electronic Science and Technology Shenzhen University Shenzhen518060 China Monash University ClaytonVIC3800 Australia National Engineering Research Center of Electromagnetic Radiation Control Materials State Key Laboratory of Electronic Thin Films and Integrated Devices School of Microelectronics and Solid State Electronics University of Electronic Science and Technology of China Chengdu610054 China Department of Electrical and Computer Engineering National University of Singapore 4 Engineering Drive 3 117583 Singapore

Two-dimensional (2D) noble-metal dichalcogenides 1, 2 have emerged as a new platform for the realization of versatile flat optics with a considerable degree of miniaturization. However, light field manipulation at the atomic scale is widely considered unattainable since the vanishing thickness and intrinsic losses of 2D materials completely suppress both resonances and phase accumulation effects. Empowered by conventionally perceived adverse effects of intrinsic losses, we show that the structured PtSe2 films integrated with a uniform substrate can regulate nontrivial singular phase and realize atomic-thick meta-optics in the presence of topological darkness 3, 4. We experimentally demonstrate a series of atomic-thick binary meta-optics that allows angle-robust and high unit-thickness diffraction efficiency of 0.96%/nm in visible frequencies, given its thickness of merely 4.3 nm. Our results unlock the potential of a new class of 2D flat optics for light field manipulation at an atomic thickness. Copyright © 2019, The Authors. All rights reserved.

关键词： Platinum compounds

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Monolayer Mg2C: Negative Poisson's ratio and unconventional two-dimensional emergent fermions

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Physical Review Materials 2018年第10期2卷 104003-104003页

作者： Shan-Shan Wang Ying Liu Zhi-Ming Yu Xian-Lei Sheng Liyan Zhu Shan Guan Shengyuan A. Yang Research Laboratory for Quantum Materials Singapore University of Technology and Design Singapore 487372 Singapore Department of Applied Physics Key Laboratory of Micro-nano Measurement-Manipulation and Physics (Ministry of Education) Beihang University Beijing 100191 China School of Physics and Electronic & Electrical Engineering and Jiangsu Key Laboratory of Modern Measurement Technology and Intelligent Systems Huaiyin Normal University Huai'an Jiangsu 223300 China State Key Laboratory of Superlattices and Microstructures Institute of Semiconductors Chinese Academy of Sciences Beijing 100083 China Center for Quantum Transport and Thermal Energy Science School of Physics and Technology Nanjing Normal University Nanjing 210023 China

Two-dimensional (2D) emergent fermions and negative Poisson's ratio in 2D materials are fascinating subjects of research. Here, based on first-principles calculations and theoretical analysis, we predict that the hexacoordinated Mg2C monolayer hosts both exotic properties. We analyze its phonon spectrum, reveal the Raman-active modes, and show that it has small in-plane stiffness constants. Particularly, under the tensile strain in the zigzag direction, the Mg2C monolayer shows an intrinsic negative Poisson's ratio ∼−0.023, stemming from its unique puckered hinge structure. The material is metallic at its equilibrium state. A moderate biaxial strain can induce a metal-semimetal-semiconductor phase transition, during which several types of 2D unconventional fermions emerge, including the anisotropic Dirac fermions around 12 tilted Dirac points in the metallic phase, the 2D double Weyl fermions in the semimetal phase where the conduction and valence bands touch quadratically at a single Fermi point, and the 2D pseudospin-1 fermions at the critical point of the semimetal-semiconductor phase transition where three bands cross at a single point on the Fermi level. In addition, uniaxial strains along the high-symmetry directions break the threefold rotational symmetry and reduce the number of Dirac points. Interestingly, it also generates 2D type-II Dirac points. We construct effective models to characterize the properties of these fermions. Our result reveals Mg2C monolayer as an intriguing platform for the study of 2D unconventional fermions, and also suggests its great potential for nanoscale device applications.

关键词： Poisson ratio 2-dimensional systems Topological materials First-principles calculations

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Opportunities and challenges for monitoring terrestrial biodiversity in the robotics age

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Nature ecology & evolution 2025年 2025 May 22页

作者： Stephen Pringle Martin Dallimer Mark A Goddard Léni K Le Goff Emma Hart Simon J Langdale Jessica C Fisher Sara-Adela Abad Marc Ancrenaz Fabio Angeoletto Fernando Auat Cheein Gail E Austen Joseph J Bailey Katherine C R Baldock Lindsay F Banin Cristina Banks-Leite Aliyu S Barau Reshu Bashyal Adam J Bates Jake E Bicknell Jon Bielby Petra Bosilj Emma R Bush Simon J Butler Dan Carpenter Christopher F Clements Antoine Cully Kendi F Davies Nicolas J Deere Michael Dodd Rosie Drinkwater Don A Driscoll Guillaume Dutilleux Mads Dyrmann David P Edwards Mohammad S Farhadinia Aisyah Faruk Richard Field Robert J Fletcher Chris W Foster Richard Fox Richard M Francksen Aldina M A Franco Alison M Gainsbury Charlie J Gardner Ioanna Giorgi Richard A Griffiths Salua Hamaza Marc Hanheide Matt W Hayward Marcus Hedblom Thorunn Helgason Sui P Heon Kevin A Hughes Edmund R Hunt Daniel J Ingram George Jackson-Mills Kelly Jowett Timothy H Keitt Laura N Kloepper Stephanie Kramer-Schadt Jim Labisko Frédéric Labrosse Jenna Lawson Nicolas Lecomte Ricardo F de Lima Nick A Littlewood Harry H Marshall Giovanni L Masala Lindsay C Maskell Eleni Matechou Barbara Mazzolai Alistair McConnell Brett A Melbourne Aslan Miriyev Eric Djomo Nana Alessandro Ossola Sarah Papworth Catherine L Parr Ana Payo-Payo Gad Perry Nathalie Pettorelli Rajeev Pillay Simon G Potts Miranda T Prendergast-Miller Lan Qie Persie Rolley-Parnell Stephen J Rossiter Marcus Rowcliffe Heather Rumble Jon P Sadler Christopher J Sandom Asiem Sanyal Franziska Schrodt Sarab S Sethi Adi Shabrani Robert Siddall Simón C Smith Robbert P H Snep Carl D Soulsbury Margaret C Stanley Philip A Stephens P J Stephenson Matthew J Struebig Matthew Studley Martin Svátek Gilbert Tang Nicholas K Taylor Kate D L Umbers Robert J Ward Patrick J C White Mark J Whittingham Serge Wich Christopher D Williams Ibrahim B Yakubu Natalie Yoh Syed A R Zaidi Anna Zmarz Joeri A Zwerts Zoe G Davies Durrell Institute of Conservation and Ecology (DICE) School of Natural Sciences University of Kent Canterbury UK. s.pringle@kent.ac.uk. Centre for Environmental Policy Imperial College London London UK. Department of Geography and Environmental Sciences Northumbria University Newcastle upon Tyne UK. School of Computing Engineering and the Built Environment Edinburgh Napier University Edinburgh UK. Synthotech Ltd Milner Court Hornbeam Square Harrogate UK. Durrell Institute of Conservation and Ecology (DICE) School of Natural Sciences University of Kent Canterbury UK. Mechanical Engineering Department University College London London UK. HUTAN SWD Kota Kinabalu Malaysia. Programa de Pós-Graduação em Gestão e Tecnologia Ambiental da Universidade Federal de Rondonópolis Rondonópolis Brasil. Department of Engineering Harper Adams University Newport UK. Applied Ecology Research Group School of Life Sciences Anglia Ruskin University Cambridge UK. Centre for Ecology and Hydrology Penicuik UK. Department of Life Sciences Imperial College London Silwood Park Campus Ascot UK. Department of Urban and Regional Planning Faculty of Earth and Environmental Sciences Bayero University Kano Nigeria. Greenhood Nepal Kathmandu Nepal. Animal Rural & Environmental Sciences Nottingham Trent University Nottinghamshire UK. School of Biological and Environmental Sciences Liverpool John Moores University Liverpool UK. Lincoln Centre for Autonomous Systems University of Lincoln Lincoln UK. Royal Botanic Garden Edinburgh Edinburgh UK. School of Biological Sciences University of East Anglia Norwich Research Park Norwich UK. Digital Ecology Limited Bristol UK. School of Biological Sciences University of Bristol Bristol UK. Department of Computing Imperial College London London UK. Department of Ecology and Evolutionary Biology University of Colorado Boulder CO USA. Faculty of Science Technology Engineering and Mathematics (STEM) The Open University Walton Hall Milt

With biodiversity loss escalating globally, a step change is needed in our capacity to accurately monitor species populations across ecosystems. Robotic and autonomous systems (RAS) offer technological solutions that may substantially advance terrestrial biodiversity monitoring, but this potential is yet to be considered systematically. We used a modified Delphi technique to synthesize knowledge from 98 biodiversity experts and 31 RAS experts, who identified the major methodological barriers that currently hinder monitoring, and explored the opportunities and challenges that RAS offer in overcoming these barriers. Biodiversity experts identified four barrier categories: site access, species and individual identification, data handling and storage, and power and network availability. Robotics experts highlighted technologies that could overcome these barriers and identified the developments needed to facilitate RAS-based autonomous biodiversity monitoring. Some existing RAS could be optimized relatively easily to survey species but would require development to be suitable for monitoring of more 'difficult' taxa and robust enough to work under uncontrolled conditions within ecosystems. Other nascent technologies (for instance, new sensors and biodegradable robots) need accelerated research. Overall, it was felt that RAS could lead to major progress in monitoring of terrestrial biodiversity by supplementing rather than supplanting existing methods. Transdisciplinarity needs to be fostered between biodiversity and RAS experts so that future ideas and technologies can be codeveloped effectively.

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