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Author : Gary W. Hunter
Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (317 download)
Download or read book Silicon Carbide-based Hydrogen and Hydrocarbon Gas Detection written by Gary W. Hunter and published by . This book was released on 1995 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jodie G. Pope
Publisher :
ISBN 13 :
Total Pages : 272 pages
Book Rating : 4.:/5 (534 download)
Download or read book Solid State Hydrogen Gas Sensors Based on Silicon Carbide written by Jodie G. Pope and published by . This book was released on 2003 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Timothy J. Fawcett
Publisher :
ISBN 13 :
Total Pages : 162 pages
Book Rating : 4.:/5 (563 download)
Download or read book Robust Silicon Carbide Resistive Hydrogen Gas Sensors written by Timothy J. Fawcett and published by . This book was released on 2004 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Silicon Carbide Micro-devices for Combustion Gas Sensing Under Harsh Conditions written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A sensor based on the wide bandgap semiconductor, silicon carbide (SiC), has been developed for the detection of combustion products in power plant environments. The sensor is a catalytic gate field effect device, Pt/SiO2/SiC that can detect hydrogen-containing species in chemically reactive, high temperature (600 C) environments. We demonstrate that the device can be used as a hydrogen monitor in syngas applications of common interferants as well as sulfur and water vapor. These measurements were made in the Catalyst Screening Unit at NETL, Morgantown under atmospheric conditions. The sensor response to hydrogen gas at 350 C is 240 mV/decade, this is significantly higher than the device response to room temperature gas or that predicted from vacuum chamber studies. The enhanced catalytic activity of the platinum sensing film under energy plant operating conditions was investigated via AFM, x-ray diffraction, TEM and x-ray photoelectron spectroscopy. Our characterization indicated that exposure to high temperature gases significantly modifies the morphology of the Pt catalytic film and the Pt/SiO2 interfacial region, which we tentatively attribute to the enhanced hydrogen sensitivity of the sensing film. A model for the hydrogen/oxygen response of the SiC device under atmospheric conditions was developed. It is based on two independent phenomena: a chemically induced shift in the metal-semiconductor work function difference and the passivation/creation of charged states at the SiO2-SiC interface. The optimum operating set point for the SiC sensor with respect to response time and long term reliability was determined to be close to mid-gap. Ultrahigh vacuum (UHV) techniques were used to investigate the effects of sulfur contamination on the Pt gate. Exposure to hydrogen sulfide, even in the presence of hydrogen or oxygen at partial pressures of 20-600 times greater than the H2S level, rapidly coated the gate with a monolayer of sulfur. Although hydrogen exposure could not remove the adsorbed sulfur, oxygen was effective at removing sulfur with no evidence of irreversible changes in device behavior. The role of oxygen in the functioning of the SiC sensors was also investigated. All of the results are consistent with oxygen acting through its surface reactions with hydrogen, including the need for oxygen to reset the device to a fully hydrogen-depleted state and competition between hydrogen oxidation and hydrogen diffusion to metal/oxide interface sites. A strong sensor response to the unsaturated linear hydrocarbon propene (C3H6) was observed.
Author :
Publisher :
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.:/5 (317 download)
Download or read book SiC-Based Gas Sensors written by and published by . This book was released on 1997 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 22 pages
Book Rating : 4.:/5 (317 download)
Download or read book Chemical Gas Sensors for Aeronautics and Space Applications III written by and published by . This book was released on 1999 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Dong Thanh Lieu
Publisher :
ISBN 13 :
Total Pages : 138 pages
Book Rating : 4.:/5 (841 download)
Download or read book Fabrication and Testing of Gas Sensors Based on Porous Silicon and Porous Silicon Carbide (3C-SiC) written by Dong Thanh Lieu and published by . This book was released on 2000 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: Single crystalline cubic silicon carbide (3C-SiC) is one of the promising materials that can be used for high-power, high-frequency, and high-temperature devices. Thus, preparation of high quality single crystalline cubic silicon carbide and reproducible fabricated electronic devices based on 3C-SiC will have important technological impacts. In this thesis, we have developed a method for the fabrication of heterojunction Schottky diode gas sensors based on porous silicon and silicon carbide. Due to the large surface area of the porous layer, the adsorb gas species modify the I-V behavior of the Schottky diode or the silicon/silicon carbide heterojunction. It was found that the I-V behavior of the Schottky diodes strongly depends on the type of gases used. It was shown that a shift in the breakdown voltage ranging from I0V to 40V could be obtained depending on the structure of the gas sensor and the types of gas used. The porous silicon was made by anodization of p-type silicon using a mixture of hydrofluoric acid and ethanol. Chemical vapor deposition (CVD) was used to grow silicon carbide. Fourier Transform Infrared Spectroscopy (FTIR) and Secondary Ion Mass Spectrometry (SIMS) were used to verify the existence and stoichiometry of SiC in the prepared samples. X-Ray Diffraction and Transmission Electron Microscopy (TEM) were used to verify the crystalline structure of resulting SiC. Atomic Force Microscopy (AFM) tests were used to view the surface morphology of resulting samples.
Author : Stephen E. Saddow
Publisher : Artech House
ISBN 13 : 9781580537414
Total Pages : 236 pages
Book Rating : 4.5/5 (374 download)
Download or read book Advances in Silicon Carbide Processing and Applications written by Stephen E. Saddow and published by Artech House. This book was released on 2004 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: Learn the latest advances in SiC (Silicon Carbide) technology from the leading experts in the field with this new cutting-edge resource. The book is your single source for in-depth information on both SiC device fabrication and system-level applications. This comprehensive reference begins with an examination of how SiC is grown and how defects in SiC growth can affect working devices. Key issues in selective doping of SiC via ion implantation are covered with special focus on implant conditions and electrical activation of implants. SiC applications discussed include chemical sensors, motor-control components, high-temperature gas sensors, and high-temperature electronics. By cutting through the arcane data and jargon surrounding the hype on SiC, this book gives an honest assessment of today's SiC technology and shows you how SiC can be adopted in developing tomorrow's applications.
Author : Gary W. Hunter
Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (317 download)
Download or read book Development of High Temperature Gas Sensor Technology written by Gary W. Hunter and published by . This book was released on 1997 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presented at the International Gas Turbine & Aeroegine Congress & Exhibition, Orlando, FL, Jun 2-Jun 5, 1997.
Author : Claudiu I. Muntele
Publisher :
ISBN 13 :
Total Pages : 282 pages
Book Rating : 4.:/5 (858 download)
Download or read book Silicon Carbide Hydrogen Sensors written by Claudiu I. Muntele and published by . This book was released on 2001 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Harlan U. Anderson
Publisher : The Electrochemical Society
ISBN 13 : 9781566771276
Total Pages : 238 pages
Book Rating : 4.7/5 (712 download)
Download or read book Proceedings of the Third International Symposium on Ceramic Sensors written by Harlan U. Anderson and published by The Electrochemical Society. This book was released on 1997 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Peter J. Hesketh
Publisher : Springer Science & Business Media
ISBN 13 : 038746283X
Total Pages : 300 pages
Book Rating : 4.3/5 (874 download)
Download or read book BioNanoFluidic MEMS written by Peter J. Hesketh and published by Springer Science & Business Media. This book was released on 2007-11-15 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explains biosensor development fundamentals. It also initiates awareness in engineers and scientists who would like to develop and implement novel biosensors for agriculture, biomedicine, homeland security, environmental needs, and disease identification. In addition, the book introduces and lays the basic foundation for design, fabrication, testing, and implementation of next generation biosensors through hands-on learning.
Author : Maximilian Fleischer
Publisher : Springer Science & Business Media
ISBN 13 : 3642280935
Total Pages : 274 pages
Book Rating : 4.6/5 (422 download)
Download or read book Solid State Gas Sensors - Industrial Application written by Maximilian Fleischer and published by Springer Science & Business Media. This book was released on 2012-06-05 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gas sensor products are very often the key to innovations in the fields of comfort, security, health, environment, and energy savings. This compendium focuses on what the research community labels as solid state gas sensors, where a gas directly changes the electrical properties of a solid, serving as the primary signal for the transducer. It starts with a visionary approach to how life in future buildings can benefit from the power of gas sensors. The requirements for various applications, such as for example the automotive industry, are then discussed in several chapters. Further contributions highlight current trends in new sensing principles, such as the use of nanomaterials and how to use new sensing principles for innovative applications in e.g. meteorology. So as to bring together the views of all the different groups needed to produce new gas sensing applications, renowned industrial and academic representatives report on their experiences and expectations in research, applications and industrialisation.
Author : Alessio Innocenti
Publisher : BoD – Books on Demand
ISBN 13 : 9535105124
Total Pages : 452 pages
Book Rating : 4.5/5 (351 download)
Download or read book Stoichiometry and Materials Science written by Alessio Innocenti and published by BoD – Books on Demand. This book was released on 2012-04-11 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this book is to provide an overview on the importance of stoichiometry in the materials science field. It presents a collection of selected research articles and reviews providing up-to-date information related to stoichiometry at various levels. Being materials science an interdisciplinary area, the book has been divided in multiple sections, each for a specific field of applications. The first two sections introduce the role of stoichiometry in nanotechnology and defect chemistry, providing examples of state-of-the-art technologies. Section three and four are focused on intermetallic compounds and metal oxides. Section five describes the importance of stoichiometry in electrochemical applications. In section six new strategies for solid phase synthesis are reported, while a cross sectional approach to the influence of stoichiometry in energy production is the topic of the last section. Though specifically addressed to readers with a background in physical science, I believe this book will be of interest to researchers working in materials science, engineering and technology.
Author : Mohamed Gad-el-Hak
Publisher : CRC Press
ISBN 13 : 9781420050905
Total Pages : 1386 pages
Book Rating : 4.0/5 (59 download)
Download or read book The MEMS Handbook written by Mohamed Gad-el-Hak and published by CRC Press. This book was released on 2001-09-27 with total page 1386 pages. Available in PDF, EPUB and Kindle. Book excerpt: The revolution is well underway. Our understanding and utilization of microelectromechanical systems (MEMS) are growing at an explosive rate with a worldwide market approaching billions of dollars. In time, microdevices will fill the niches of our lives as pervasively as electronics do right now. But if these miniature devices are to fulfill their mammoth potential, today's engineers need a thorough grounding in the underlying physics, modeling techniques, fabrication methods, and materials of MEMS. The MEMS Handbook delivers all of this and more. Its team of authors-unsurpassed in their experience and standing in the scientific community- explore various aspects of MEMS: their design, fabrication, and applications as well as the physical modeling of their operations. Designed for maximum readability without compromising rigor, it provides a current and essential overview of this fledgling discipline.
Author : Peter Friedrichs
Publisher : John Wiley & Sons
ISBN 13 : 9783527629084
Total Pages : 520 pages
Book Rating : 4.6/5 (29 download)
Download or read book Silicon Carbide, Volume 2 written by Peter Friedrichs and published by John Wiley & Sons. This book was released on 2011-04-08 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: Silicon Carbide - this easy to manufacture compound of silicon and carbon is said to be THE emerging material for applications in electronics. High thermal conductivity, high electric field breakdown strength and high maximum current density make it most promising for high-powered semiconductor devices. Apart from applications in power electronics, sensors, and NEMS, SiC has recently gained new interest as a substrate material for the manufacture of controlled graphene. SiC and graphene research is oriented towards end markets and has high impact on areas of rapidly growing interest like electric vehicles. This volume is devoted to high power devices products and their challenges in industrial application. Readers will benefit from reports on development and reliability aspects of Schottky barrier diodes, advantages of SiC power MOSFETs, or SiC sensors. The authors discuss MEMS and NEMS as SiC-based electronics for automotive industry as well as SiC-based circuit elements for high temperature applications, and the application of transistors in PV-inverters. The list of contributors reads like a "Who's Who" of the SiC community, strongly benefiting from collaborations between research institutions and enterprises active in SiC crystal growth and device development. Among the former are CREE Inc. and Fraunhofer ISE, while the industry is represented by Toshiba, Nissan, Infineon, NASA, Naval Research Lab, and Rensselaer Polytechnic Institute, to name but a few.
Author : Henry Helvajian
Publisher : AIAA
ISBN 13 : 9781884989032
Total Pages : 748 pages
Book Rating : 4.9/5 (89 download)
Download or read book Microengineering Aerospace Systems written by Henry Helvajian and published by AIAA. This book was released on 1999 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microengineering Aerospace Systems is a textbook tutorial encompassing MEMS (micro-electromechanical systems), nanoelectronics, packaging, processing, and materials characterization for developing miniaturized smart instruments for aerospace systems (i.e., ASIM application-specific integrated microinstrument), satellites, and satellite subsystems. Third in a series of Aerospace Press publications covering this rapidly advancing technology, this work presents fundamental aspects of the technology and specific aerospace systems applications through worked examples.
