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Imperial College London Department of Physics Graphene Field Effect
Imperial College London Department of Physics Graphene Field Effect Transistors arXiv:2010.10382v2 [cond-mat.mes-hall] 20 Jul 2021 By Mohamed Warda and Khodr Badih 20 July 2021 Abstract The past decade has seen rapid growth in the research area of graphene and its application to novel electronics. With Moore's law beginning to plateau, the need for post-silicon technology in industry is becoming more apparent. Moreover, exist- ing technologies are insufficient for implementing terahertz detectors and receivers, which are required for a number of applications including medical imaging and secu- rity scanning. Graphene is considered to be a key potential candidate for replacing silicon in existing CMOS technology as well as realizing field effect transistors for terahertz detection, due to its remarkable electronic properties, with observed elec- tronic mobilities reaching up to 2 × 105 cm2 V−1 s−1 in suspended graphene sam- ples. This report reviews the physics and electronic properties of graphene in the context of graphene transistor implementations. Common techniques used to syn- thesize graphene, such as mechanical exfoliation, chemical vapor deposition, and epitaxial growth are reviewed and compared. One of the challenges associated with realizing graphene transistors is that graphene is semimetallic, with a zero bandgap, which is troublesome in the context of digital electronics applications. Thus, the report also reviews different ways of opening a bandgap in graphene by using bi- layer graphene and graphene nanoribbons. The basic operation of a conventional field effect transistor is explained and key figures of merit used in the literature are extracted. Finally, a review of some examples of state-of-the-art graphene field effect transistors is presented, with particular focus on monolayer graphene, bilayer graphene, and graphene nanoribbons. -
U.S. Energy in the 21St Century: a Primer
U.S. Energy in the 21st Century: A Primer March 16, 2021 Congressional Research Service https://crsreports.congress.gov R46723 SUMMARY R46723 U.S. Energy in the 21st Century: A Primer March 16, 2021 Since the start of the 21st century, the U.S. energy system has changed tremendously. Technological advances in energy production have driven changes in energy consumption, and Melissa N. Diaz, the United States has moved from being a net importer of most forms of energy to a declining Coordinator importer—and a net exporter in 2019. The United States remains the second largest producer and Analyst in Energy Policy consumer of energy in the world, behind China. Overall energy consumption in the United States has held relatively steady since 2000, while the mix of energy sources has changed. Between 2000 and 2019, consumption of natural gas and renewable energy increased, while oil and nuclear power were relatively flat and coal decreased. In the same period, production of oil, natural gas, and renewables increased, while nuclear power was relatively flat and coal decreased. Overall energy production increased by 42% over the same period. Increases in the production of oil and natural gas are due in part to technological improvements in hydraulic fracturing and horizontal drilling that have facilitated access to resources in unconventional formations (e.g., shale). U.S. oil production (including natural gas liquids and crude oil) and natural gas production hit record highs in 2019. The United States is the largest producer of natural gas, a net exporter, and the largest consumer. Oil, natural gas, and other liquid fuels depend on a network of over three million miles of pipeline infrastructure. -
OBS Transforming CX
Winning the Global Consumer Electronics Industry A checklist for global, consistent and secure CX "The Age of Experience will be defined by personalized technology that meets your needs… the devices you use will understand you as an individual, blurring the boundaries between the digital and physical worlds." HS KIM President and CEO of Consumer Electronics Division Samsung Electronics Smartphones, smart TVs, laptops and tablets, The global electrical appliances, wearable devices – the US$1 trillion consumer electronics industry permeates every aspect consumer of our lives. It is a proof of the incredible pace of Global consumer electronics innovation around us. electronics market The intense competition especially from many of the size in 2019 industry industry’s Asian leaders such as Samsung, Huawei, Sony, Xiaomi and LG, renders differentiation around product and pricing difficult. COVID-19 has accelerated competition as consumer behaviours shift from purchasing and in-person browsing to their digital equivalents. Companies are looking to create unique personalized Key trends: experiences that optimize every stage of the customer journey across each interaction, be it in-store, or via a Increased demand in website, a mobile app, social media, smartphones, or the emerging markets e-mail, to deliver the right experiences at the right Growing dominance time. Done well, enriched customer experiences will enable businesses in the consumer electronics of Asian companies industry to build customer loyalty in driving Convergence of sustainable competitive advantage in the long-term. technologies, devices and industries ¹ Consumer Electronics Market Size, Global Market Insights Key trends shaping the future Localization drives conversions As consumer electronics giants such as Xiaomi, Huawei, and Samsung compete for market shares in new geographies, a nuanced approach is crucial for building a strong brand presence across diverse markets. -
The Evolving Electronics Industry Courting the Customer Through Insight and Innovation
Smarter electronics Point of view The evolving electronics industry Courting the customer through insight and innovation Transistor by transistor, the electronics industry is literally changing the world. Consider this: today’s fastest computer can now achieve 17 quadril- lion calculations per second1, and by 2015 there will be more than seven billion mobile devices in the world consuming and generating massive amounts of data.2 Right now there are more than one billion transistors for each person on the planet.3 With innovations like these, it is no surprise that the electronics industry continues to be a leader in research and development investment across the world.4 However, despite an impressive track record of pioneering technology, today’s electronics industry is in a state of disruption. Product life-cycles are compressing, emphasizing the need to create innovative products and services faster and more cheaply than ever before. Competitive pressures are at an all-time high, with aggressive new entrants vying with a continuing need to contain operational costs. And though profit margins for some electronics segments remain relatively high, most are under heavy margin pressure. Together, these trends are driving electronics companies to find new growth opportunities. Many believe that the best way to do this—perhaps the only way to do it—is to transform their business models by getting closer to their customers. In fact, the 2012 IBM CEO study revealed that 86 percent of global electronics CEOs are implementing extensive changes in their organizations to deepen their understanding of individual customer needs, while enabling faster, more relevant responses to markets and individuals.5 CEOs realize that innovative products and services are only successful when they deliver on customer needs. -
Maximizing Manufacturing Margins with Value Engineering Balancing Cost Reduction, Process Improvement, and Product Value
Maximizing Manufacturing Margins with Value Engineering Balancing Cost Reduction, Process Improvement, and Product Value Manufacturers large and small all hope to achieve the same thing: manufacture more products, with higher margins. Of course, in order to build a lasting business, you need to keep customers satisfied, meaning the quality of products must remain high when you make moves to reduce costs. The best way to reduce costs and improve processes without diminishing the quality of your product is through a process called Value Engineering. Value Engineering is a process used by companies across the globe to ensure product functionality is maximized while costs are minimized. By incorporating Value Engineering into your product development process, you’ll reduce costs, increase margins, and establish a smarter way to determine which new products justify the investment to bring them to market. FortéOne has been helping middle market companies conduct a value analysis and implement Value Engineering in their organizations for 20 years. By leveraging the experience of our people, who have installed Value Engineering in companies across many industries, we have developed a four-step process for incorporating Value Engineering into middle market organizations that avoids the most common challenges companies face during its implementation. Explained below are the lessons we have learned. What is Value Engineering? Value Engineering starts with product value. Product value is the ratio of product function to product cost (including the purchase of raw materials and packaging, logistics and shipping costs, overhead and manpower, and line efficiency). Product function is the work a product is designed to perform. -
Mining Engineering 1
Mining Engineering 1 Learn more about the bachelor’s degree in mining engineering (https:// MINING ENGINEERING uaf.edu/academics/programs/bachelors/mining-engineering.php), including an overview of the program, career opportunities and more. B.S. Degree College of Engineering and Mines As the nation’s northernmost accredited mining engineering program, Department of Mining and Geological Engineering (https://cem.uaf.edu/ our mission is to advance and disseminate knowledge for exploration, mingeo/) evaluation, development and efficient production of mineral and energy 907-474-7388 resources with assurance of the health and safety of persons involved and protection of the environment, through creative teaching, research Programs and public service with an emphasis on Alaska, the North and its diverse peoples. Degree • B.S., Mining Engineering (http://catalog.uaf.edu/bachelors/ The mining engineering program emphasizes engineering as it applies bachelors-degree-programs/mining-engineering/bs/) to the exploration and development of mineral resources and the economics of the business of mining. The program offers specializations in exploration, mining or mineral beneficiation. Minor • Minor, Mining Engineering (http://catalog.uaf.edu/bachelors/ Students are prepared for job opportunities with mining and construction bachelors-degree-programs/mining-engineering/minor/) companies, consulting and research firms, equipment manufacturers, investment and commodity firms in the private sector, as well as with state and federal agencies. The mining engineering program educational objectives are to graduate competent engineers who: • apply their engineering skills and knowledge with consideration to health, safety and the environment, • pursue careers in mineral-related industries, • are active among the local and professional mining communities, and • seek professional advancement of mining engineering technology and practices. -
Analysis Guide for Electronics/Electrical Product Designers
WHITE PAPER Analysis Guide for Electronics/Electrical Product Designers inspiration SUMMARY In this paper we outline the key design performance issues facing electronics and electrical product manufacturers and identify the ben- efits of using SolidWorks® Simulation software for electronics and electrical product design. The paper outlines the types of analyses that SolidWorks Simulation software can perform and proves why these analyses are critical to electrical and electronic product engineering. Introduction Analysis and simulation software has become an indispensable tool for the development, certification, and success of electronics and electrical products. In addition to having to meet federal requirements, such as standards regulating electromagnetic compatibility (EMC) and product safety, electronics and electri- cal products manufacturers must meet various industry standards, such as the Bellcore standard for telecommunications equipment and standards governing the reliability of printed circuit boards (e.g., all PCBs must be able to withstand 21 pounds of load in the center). Combined with customer and market demand for smaller, more compact, and lighter products, these requirements create competitive pressures that make flawless, reliable development of electronics and electrical products an absolute necessity. FIGURE 1: THE USE OF CFD MAKES IT POSSIBLE TO ELIMINATE EXPENSIVE PHYS- IcaL PROTOTYpeS, AND FIND SERIOUS FLAWS MUCH eaRLIER IN THE deSIGN PROCESS. Today’s electronics/electrical product manufacturers use analysis software to simulate and assess the performance of a variety of product designs, including consumer electronics, appliances, sophisticated instrumentation, electronics components, printed circuit boards, RF equipment, motors, drives, electrical con- trols, micro electromechanical systems (MEMS), optical networking equipment, electronics packaging, and semiconductors. Analysis software enables engi- neers to simulate design performance and identify and address potential design problems before prototyping and production. -
Is EE Right for You?
Erik Jonsson School of Engggineering and The Un ivers ity o f Texas a t Da llas Computer Science Is EE Right for You? • “Toto, I have a feeling we’re not in Kansas anymore.” • Now that you are here, diii?id you make the right choice? • Electrical engineering is a challenging and satisfying profession. That does not mean it is easy. In fact, with the possible exceptions of medicine or law, it is the MOST difficult. • There are some things you need to consider if you really, really want to be an engineer. • We will consider a few today. EE 1202 Lecture #1 – Why Electrical Engineering? 1 © N. B. Dodge 01/12 Erik Jonsson School of Engggineering and The Un ivers ity o f Texas a t Da llas Computer Science Is EE Right for You (2)? • Why did you decide to be an electrical engineer? – Parents will pay for engineering education (it’s what they want). – You like math and science. – A relative is an engineer and you like him/her. – You want to challenge yourself, and engineering seems challenging. – You think you are creative and love technology. – You want to make a difference in society . EE 1202 Lecture #1 – Why Electrical Engineering? 2 © N. B. Dodge 01/12 Erik Jonsson School of Engggineering and The Un ivers ity o f Texas a t Da llas Computer Science The High School “Science Student” Problem • In high school, you were FAR above the average. – And you probably didn’t study too hard, right? • You liked science and math, and they weren’t terribly hard. -
Electrical Engineering Technology
Electrical Engineering Technology Electrical Engineering Program Accreditation The Electrical Engineering Technology program at Central Piedmont is accredited by the Engineering Technology Accreditation Commission Technology (TAC) of the Accreditation Board of Engineering and Technology (ABET). The Associate in Applied Science degree in Electrical Engineering How to Apply: Technology has been specifically designed to prepare individuals to Complete a Central Piedmont admissions application through Get become advanced technicians in the workforce. Started on the Central Piedmont website. Electrical Engineering Technicians (Associates degree holders) typically build, install, test, troubleshoot, repair, and modify developmental and Contact Information production electronic components, equipment, and systems such as For questions about the program or for assistance as a student in the industrial/computer controls, manufacturing systems, instrumentation program, contact faculty advising. The Electrical Engineering Technology systems, communication systems, and power electronic systems. program is in the Engineering Technology Division. For additional information, visit the Electrical Engineering Technology website or call the A broad-based core of courses ensures that students develop the skills Program Chair at 704.330.6773. necessary to perform entry-level tasks. Emphasis is placed on developing the ability to think critically, analyze, and troubleshoot electronic systems. General Education Requirements Beginning with electrical fundamentals, course work progressively ENG 111 Writing and Inquiry 3.0 introduces electronics, 2D Computer Aided Design (CAD), circuit Select one of the following: 3.0 simulation, solid-state fundamentals, digital concepts, instrumentation, C++ programming, microprocessors, programmable Logic Controllers ENG 112 Writing and Research in the Disciplines (PLCs). Other course work includes the study of various fields associated ENG 113 Literature-Based Research with the electrical/electronic industry. -
Hydroelectric Power -- What Is It? It=S a Form of Energy … a Renewable Resource
INTRODUCTION Hydroelectric Power -- what is it? It=s a form of energy … a renewable resource. Hydropower provides about 96 percent of the renewable energy in the United States. Other renewable resources include geothermal, wave power, tidal power, wind power, and solar power. Hydroelectric powerplants do not use up resources to create electricity nor do they pollute the air, land, or water, as other powerplants may. Hydroelectric power has played an important part in the development of this Nation's electric power industry. Both small and large hydroelectric power developments were instrumental in the early expansion of the electric power industry. Hydroelectric power comes from flowing water … winter and spring runoff from mountain streams and clear lakes. Water, when it is falling by the force of gravity, can be used to turn turbines and generators that produce electricity. Hydroelectric power is important to our Nation. Growing populations and modern technologies require vast amounts of electricity for creating, building, and expanding. In the 1920's, hydroelectric plants supplied as much as 40 percent of the electric energy produced. Although the amount of energy produced by this means has steadily increased, the amount produced by other types of powerplants has increased at a faster rate and hydroelectric power presently supplies about 10 percent of the electrical generating capacity of the United States. Hydropower is an essential contributor in the national power grid because of its ability to respond quickly to rapidly varying loads or system disturbances, which base load plants with steam systems powered by combustion or nuclear processes cannot accommodate. Reclamation=s 58 powerplants throughout the Western United States produce an average of 42 billion kWh (kilowatt-hours) per year, enough to meet the residential needs of more than 14 million people. -
Console Games in the Age of Convergence
Console Games in the Age of Convergence Mark Finn Swinburne University of Technology John Street, Melbourne, Victoria, 3122 Australia +61 3 9214 5254 mfi [email protected] Abstract In this paper, I discuss the development of the games console as a converged form, focusing on the industrial and technical dimensions of convergence. Starting with the decline of hybrid devices like the Commodore 64, the paper traces the way in which notions of convergence and divergence have infl uenced the console gaming market. Special attention is given to the convergence strategies employed by key players such as Sega, Nintendo, Sony and Microsoft, and the success or failure of these strategies is evaluated. Keywords Convergence, Games histories, Nintendo, Sega, Sony, Microsoft INTRODUCTION Although largely ignored by the academic community for most of their existence, recent years have seen video games attain at least some degree of legitimacy as an object of scholarly inquiry. Much of this work has focused on what could be called the textual dimension of the game form, with works such as Finn [17], Ryan [42], and Juul [23] investigating aspects such as narrative and character construction in game texts. Another large body of work focuses on the cultural dimension of games, with issues such as gender representation and the always-controversial theme of violence being of central importance here. Examples of this approach include Jenkins [22], Cassell and Jenkins [10] and Schleiner [43]. 45 Proceedings of Computer Games and Digital Cultures Conference, ed. Frans Mäyrä. Tampere: Tampere University Press, 2002. Copyright: authors and Tampere University Press. Little attention, however, has been given to the industrial dimension of the games phenomenon. -
Power Electronics for Distributed Energy Systems and Transmission and Distribution Applications
ORNL/TM-2005/230 POWER ELECTRONICS FOR DISTRIBUTED ENERGY SYSTEMS AND TRANSMISSION AND DISTRIBUTION APPLICATIONS L. M. Tolbert T. J. King B. Ozpineci J. B. Campbell G. Muralidharan D. T. Rizy A. S. Sabau H. Zhang* W. Zhang* Y. Xu* H. F. Huq* H. Liu* December 2005 *The University of Tennessee-Knoxville ORNL/TM-2005/230 Engineering Science and Technology Division POWER ELECTRONICS FOR DISTRIBUTED ENERGY SYSTEMS AND TRANSMISSION AND DISTRIBUTION APPLICATIONS L. M. Tolbert T. J. King B. Ozpineci J. B. Campbell G. Muralidharan D. T. Rizy A. S. Sabau H. Zhang W. Zhang Y. Xu H. F. Huq H. Liu Publication Date: December 2005 Prepared by the OAK RIDGE NATIONAL LABORATORY Oak Ridge, Tennessee 37831 managed by UT-BATTELLE, LLC for the U.S. DEPARTMENT OF ENERGY Under contract DE-AC05-00OR22725 DOCUMENT AVAILABILITY Reports produced after January 1, 1996, are generally available free via the U.S. Department of Energy (DOE) Information Bridge. Web site http://www.osti.gov/bridge Not available externally. Reports are available to DOE employees, DOE contractors, Energy Technology Data Exchange (ETDE) representatives, and International Nuclear Information System (INIS) representatives from the following source. Office of Scientific and Technical Information P.O. Box 62 Oak Ridge, TN 37831 Telephone 865-576-8401 Fax 865-576-5728 E-mail [email protected] Web site http://www.osti.gov/contact.html This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights.