Adaptive Control of Interface by Temperature and Interface Profile Feedback in Transparent Multi-Zone Crystal Growth Furnace

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Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781722046620
Total Pages : 32 pages
Book Rating : 4.0/5 (466 download)

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Book Synopsis Adaptive Control of Interface by Temperature and Interface Profile Feedback in Transparent Multi-Zone Crystal Growth Furnace by : National Aeronautics and Space Administration (NASA)

Download or read book Adaptive Control of Interface by Temperature and Interface Profile Feedback in Transparent Multi-Zone Crystal Growth Furnace written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-30 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this research is to control the dynamics of multizone programmable crystal growth furnaces. Due to the inevitable heat exchange among different heating zones and the transient nature of the process, the dynamics of multizone furnaces is time varying, distributed, and therefore complex in nature. Electrical power to heating zones and the translational speed of the ampoule are employed as inputs to control the dynamics. Structural properties of the crystal is the ultimate aim of this adaptive control system. These properties can be monitored in different ways. Following an order of complexity, these may include: (1) on line measurement of the material optical properties such as the refractive index of crystal; (2) on line x-ray imaging of the interface topology; (3) on line optical quantification of the interface profile such as the determination of concavity or convexity of the interface shape; and (4) on line temperature measurement at points closest to the material such as measurements of the ampoule's outside and inside surface temperatures. The research performed makes use of the temperature and optical measurements, specified in (3) and (4) as the outputs of furnace dynamics. However, if the instrumentation is available, the proposed control methodology can be extended to the measurements listed in (1) and (2). Batur, Celal Unspecified Center NCC3-150...

Scientific and Technical Aerospace Reports

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ISBN 13 :
Total Pages : 836 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Scientific and Technical Aerospace Reports by :

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:

NASA's University Program Active Projects

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ISBN 13 :
Total Pages : 510 pages
Book Rating : 4.F/5 ( download)

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Download or read book NASA's University Program Active Projects written by and published by . This book was released on with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt:

NASA Technical Memorandum

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Publisher :
ISBN 13 :
Total Pages : 464 pages
Book Rating : 4.:/5 (319 download)

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Book Synopsis NASA Technical Memorandum by : United States. National Aeronautics and Space Administration

Download or read book NASA Technical Memorandum written by United States. National Aeronautics and Space Administration and published by . This book was released on 1992 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Microgravity Science and Applications Program Tasks

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ISBN 13 :
Total Pages : 320 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Microgravity Science and Applications Program Tasks by :

Download or read book Microgravity Science and Applications Program Tasks written by and published by . This book was released on 1991 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Monthly Catalogue, United States Public Documents

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ISBN 13 :
Total Pages : 1064 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Monthly Catalogue, United States Public Documents by :

Download or read book Monthly Catalogue, United States Public Documents written by and published by . This book was released on 1994 with total page 1064 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Monthly Catalog of United States Government Publications

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (891 download)

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Book Synopsis Monthly Catalog of United States Government Publications by :

Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Government Reports Annual Index

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ISBN 13 :
Total Pages : 1748 pages
Book Rating : 4.:/5 (89 download)

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Book Synopsis Government Reports Annual Index by :

Download or read book Government Reports Annual Index written by and published by . This book was released on 1994 with total page 1748 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Development of Versatile Control System for Control of Crystal Growth Furnace and Ancillary Systems Using National Instruments Devices and LabVIEW Program

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ISBN 13 :
Total Pages : 57 pages
Book Rating : 4.:/5 (72 download)

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Book Synopsis Development of Versatile Control System for Control of Crystal Growth Furnace and Ancillary Systems Using National Instruments Devices and LabVIEW Program by : Chandrasekar Minnal

Download or read book Development of Versatile Control System for Control of Crystal Growth Furnace and Ancillary Systems Using National Instruments Devices and LabVIEW Program written by Chandrasekar Minnal and published by . This book was released on 2010 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Government Reports Announcements & Index

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ISBN 13 :
Total Pages : 1716 pages
Book Rating : 4.:/5 (319 download)

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Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1994 with total page 1716 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Modeling the Linkages Between Heat Transfer and Microdefect Formation in Crystal Growth

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ISBN 13 :
Total Pages : 387 pages
Book Rating : 4.:/5 (451 download)

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Book Synopsis Modeling the Linkages Between Heat Transfer and Microdefect Formation in Crystal Growth by : Tatsuo Mori

Download or read book Modeling the Linkages Between Heat Transfer and Microdefect Formation in Crystal Growth written by Tatsuo Mori and published by . This book was released on 2000 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Glossary of Prosthodontic Terms

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ISBN 13 :
Total Pages : 80 pages
Book Rating : 4.3/5 (91 download)

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Download or read book The Glossary of Prosthodontic Terms written by and published by . This book was released on 1994 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

HVAC Control in the New Millennium

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Publisher : The Fairmont Press, Inc.
ISBN 13 : 0881733997
Total Pages : 398 pages
Book Rating : 4.8/5 (817 download)

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Book Synopsis HVAC Control in the New Millennium by : Michael F. Hordeski

Download or read book HVAC Control in the New Millennium written by Michael F. Hordeski and published by The Fairmont Press, Inc.. This book was released on 2001 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: 1-Heat, Ventilation and Damper Control Trends2-Energy and Power Management, Distributed Control Trends3-Control Technology, Microelectronics and Nanotechnology4-Advance HVAC Control, Information Technology and Open Systems5-PC-based Control, Software and Bus Trends6-Artificial Intelligence, Fuzzy Logic and Control7-Computer Networks and Security8-Systems and Device Networks9-Building automation, Wireless Technology and the InternetIndex

Crystal Growth and Evaluation of Silicon for VLSI and ULSI

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Publisher : CRC Press
ISBN 13 : 1482232812
Total Pages : 432 pages
Book Rating : 4.4/5 (822 download)

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Book Synopsis Crystal Growth and Evaluation of Silicon for VLSI and ULSI by : Golla Eranna

Download or read book Crystal Growth and Evaluation of Silicon for VLSI and ULSI written by Golla Eranna and published by CRC Press. This book was released on 2014-12-08 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: Silicon, as a single-crystal semiconductor, has sparked a revolution in the field of electronics and touched nearly every field of science and technology. Though available abundantly as silica and in various other forms in nature, silicon is difficult to separate from its chemical compounds because of its reactivity. As a solid, silicon is chemically inert and stable, but growing it as a single crystal creates many technological challenges. Crystal Growth and Evaluation of Silicon for VLSI and ULSI is one of the first books to cover the systematic growth of silicon single crystals and the complete evaluation of silicon, from sand to useful wafers for device fabrication. Written for engineers and researchers working in semiconductor fabrication industries, this practical text: Describes different techniques used to grow silicon single crystals Explains how grown single-crystal ingots become a complete silicon wafer for integrated-circuit fabrication Reviews different methods to evaluate silicon wafers to determine suitability for device applications Analyzes silicon wafers in terms of resistivity and impurity concentration mapping Examines the effect of intentional and unintentional impurities Explores the defects found in regular silicon-crystal lattice Discusses silicon wafer preparation for VLSI and ULSI processing Crystal Growth and Evaluation of Silicon for VLSI and ULSI is an essential reference for different approaches to the selection of the basic silicon-containing compound, separation of silicon as metallurgical-grade pure silicon, subsequent purification, single-crystal growth, and defects and evaluation of the deviations within the grown crystals.

Engineering and Design

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Publisher : Military Bookshop
ISBN 13 : 9781780397702
Total Pages : 434 pages
Book Rating : 4.3/5 (977 download)

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Book Synopsis Engineering and Design by : Us Army Corps Of Engineers

Download or read book Engineering and Design written by Us Army Corps Of Engineers and published by Military Bookshop. This book was released on 2002-06-01 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: This manual provides practical guidance for the design and operation of soil vapor extraction (SVE) and bioventing (BV) systems. It is intended for use by engineers, geologists, hydrogeologists, and soil scientists, chemists, project managers, and others who possess a technical education and some design experience but only the broadest familiarity with SVE or BV systems.

Handbook of Hydrothermal Technology

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Publisher : William Andrew
ISBN 13 : 1437778364
Total Pages : 796 pages
Book Rating : 4.4/5 (377 download)

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Book Synopsis Handbook of Hydrothermal Technology by : K. Byrappa

Download or read book Handbook of Hydrothermal Technology written by K. Byrappa and published by William Andrew. This book was released on 2012-12-31 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quartz, zeolites, gemstones, perovskite type oxides, ferrite, carbon allotropes, complex coordinated compounds and many more -- all products now being produced using hydrothermal technology. Handbook of Hydrothermal Technology brings together the latest techniques in this rapidly advancing field in one exceptionally useful, long-needed volume.The handbook provides a single source for understanding how aqueous solvents or mineralizers work under temperature and pressure to dissolve and recrystallize normally insoluble materials, and decompose or recycle any waste material. The result, as the authors show in the book, is technologically the most efficient method in crystal growth, materials processing, and waste treatment. The book gives scientists and technologists an overview of the entire subject including: À Evolution of the technology from geology to widespread industrial use. À Descriptions of equipment used in the process and how it works.À Problems involved with the growth of crystals, processing of technological materials, environmental and safety issues.À Analysis of the direction of today's technology. In addition, readers get a close look at the hydrothermal synthesis of zeolites, fluorides, sulfides, tungstates, and molybdates, as well as native elements and simple oxides. Delving into the commercial production of various types, the authors clarify the effects of temperature, pressure, solvents, and various other chemical components on the hydrothermal processes. Gives an overview of the evolution of Hydrothermal Technology from geology to widespread industrial use Describes the equipment used in the process and how it works Discusses problems involved with the growth of crystals, processing of technological materials, and environmental and safety issues

Free Reserves and the Money Supply

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ISBN 13 :
Total Pages : 146 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Free Reserves and the Money Supply by : Alexander James Meigs

Download or read book Free Reserves and the Money Supply written by Alexander James Meigs and published by . This book was released on 1962 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issued in microfilm form in 1960 as thesis, Columbia University.