Search results for: metal-oxide-based-sensors

Metal Oxide Nanostructures as Gas Sensing Devices

Author : G. Eranna
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Metal Oxide Nanostructures as Gas Sensing Devices explores the development of an integrated micro gas sensor that is based on advanced metal oxide nanostructures and is compatible with modern semiconductor fabrication technology. This sensor can then be used to create a compact, low-power, handheld device for analyzing air ambience. The book first covers current gas sensing tools and discusses the necessity for miniaturized sensors. It then focuses on the materials, devices, and techniques used for gas sensing applications, such as resistance and capacitance variations. The author addresses the issues of sensitivity, concentration, and temperature dependency as well as the response and recovery times crucial for sensors. He also presents techniques for synthesizing different metal oxides, particularly those with nanodimensional structures. The text goes on to highlight the gas sensing properties of many nanostructured metal oxides, from aluminum and cerium to iron and titanium to zinc and zirconium. The final chapters deal with existing and future devices that are based on nanostructures. Miniaturized systems that analyze air ambience need sensors capable of identifying different gaseous species. Exploring state-of-the-art gas sensing devices, this book shows how nanostructured metal oxides are ideally suited for use as gas sensing elements.

Metal Oxides in Nanocomposite Based Electrochemical Sensors for Toxic Chemicals

Author : A. Pandikumar
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Metal oxide nanomaterials exhibit interesting electrical and photochemical properties because of their size, stability, and high surface area that render them as great choices in fabricating alternative electrode materials for electrochemical energy storage and sensor applications. The hybridization of metal oxides with other materials lead to the improvement in electrical conductivity, stability, and electron transfer kinetics during the electrocatalytic reactions. These key factors result in greater sensitivity of the sensor materials towards the analyte molecules. This book reviews the electrochemical determination of a variety of toxic chemical contaminants using metal oxide-based nanocomposite materials. Ultrasensitive and selective detection of toxic chemical contaminants is important and demanding, especially for monitoring and controlling environmental pollution. In recent years, metal oxide-based nanocomposite materials have shown high potential in the electrochemical detection of heavy metals, inorganic anions, phenolic compounds, pesticides, and chemical warfare reagents. Metal Oxides in Nanocomposite-Based Electrochemical Sensors for Toxic Chemicals comprehensively reviews this topic. In addition to the instrumental simplicity, the electrochemical methods show the improved sensor performance through the synergetic effect of metal oxide and other electroactive nanomaterial present in the nanocomposite. Thus, detailed information on the electrochemical sensing of toxic chemical contaminants using metal oxide-based nanomaterials are discussed. The recent progress in developing electrochemical sensors using metal oxide-based nanocomposite materials and perspectives on future opportunities in sensor research and development are addressed in the book. Introduces the fundamentals of electrochemical sensors and fabrication of metal oxide sensors of toxic chemicals Reviews binary, doped, metal oxide-metal, metal oxide-carbon, metal oxide-polymer, metal-boron nitride, metal oxide-clay, and metal oxide- MOF electrodes Systematically addresses the fabrication, synthesis, performance, mechanisms, detection limits, sensitivity, advantages and limitations and future perspectives of a wide range of metal oxide-based electrochemical sensors

Semiconducting Metal Oxides for Gas Sensing

Author : Yonghui Deng
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This book focuses on the use of semiconducting metal oxides as gas sensing materials, including the sensing mechanism and sensing materials modification approach, while also providing a comprehensive introduction to semiconductor gas sensing devices. As an essential part of IoT (Internet of things), gas sensors have shown great significance and promising prospects. Therefore, studies on semiconducting metal oxides, one of the most important gas sensing materials, have increasingly attracted attention from various disciplines. The book offers a valuable reference guide to metal oxide gas sensing materials for undergraduate and graduate students alike. It will also benefit all researchers who investigate metal oxides nanomaterials synthesis and gas sensing with relevant frontier theories and concepts. Engineers working on research and development for semiconductor gas sensors will also find new ideas in sensor design.

Air Suspended Silicon Micro Bridge Structures for Metal Oxide Based Gas Sensing

Author : Keshavaditya Golla
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Maintaining specific temperature is a key parameter for most of the gas sensing materials, particularly for metal oxide-based thin film layers, to operate them more efficiently to detect different gaseous (or vapor) species at ppm and ppb concentration levels. For field applications, battery-operated micro-gas-sensors, power dissipation and the required temperature stability are to be maintained with a close tolerance for better signal stability and also to analyze the generated data from the sensing element. This chapter mainly focuses on several metal oxide films to highlight the base temperature and its creation on silicon-based platforms. Air-suspended structures are highlighted, and a comparison is drawn between simple and MEMS-based structures from the power dissipation point of view. Ease of fabrication and operation limitations are explained with fabrication issues.

Gas Sensors Based on Conducting Metal Oxides

Author : Nicolae Barsan
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Gas Sensors Based on Conducting Metal Oxides: Basic Understanding, Technology and Applications focuses on two distinct types of gas sensors based on conducting metal oxides. Ion conduction, applied in so-called solid-state electrolytic sensors for one, and electronic conduction used in semiconductivity gas sensors for the other. The well-known λ–probe, a key component to optimize combustion in car engines, is an example of the former type, and the in-cabin car air-quality control SnO2 and WO2 sensor array stands for the semiconductivity type. Chapters cover basic aspects of functioning principles and describe the technologies and challenges of present and future sensors. Provides reader background and context on sensors, principles, fabrication and applications Includes chapters on specific technological applications, such as exhaust sensors, environmental sensors, explosive gases alarms and more Presents a structured presentation that allows for quick reference of vital information

Semiconductor Gas Sensors

Author : Raivo Jaaniso
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Semiconductor gas sensors have a wide range of applications in safety, process control, environmental monitoring, indoor or cabin air quality and medical diagnosis. This important book summarises recent research on basic principles, new materials and emerging technologies in this essential field. The first part of the book reviews the underlying principles and sensing mechanisms for n- and p-type oxide semiconductors, introduces the theory for nanosize materials and describes the role of electrode–semiconductor interfaces. The second part of the book describes recent developments in silicon carbide- and graphene-based gas sensors, wide bandgap semiconductor gas sensors and micromachined and direct thermoelectric gas sensors. Part 3 discusses the use of nanomaterials for gas sensing, including metal oxide nanostructures, quantum dots, single-alled carbon nanotubes and porous silicon. The final part of the book surveys key applications in environmental monitoring, detecting chemical warfare agents and monitoring gases such as carbon dioxide. Semiconductor gas sensors is a valuable reference work for all those involved in gas monitoring, including those in the building industry, environmental engineers, defence and security specialists and researchers in this field. Provides an overview of resistor and non-resistor sensors Reviews developments in gas sensors and sensing methods, including graphene based sensors and direct thermoelectric sensors Discusses the use of nanomaterials in gas sensing

Nanomaterials for Air Remediation

Author : Abdeltif Amrane
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Nanomaterials for Air Remediation provides a comprehensive description of basic knowledge and current research progress in the field of air treatment using nanomaterials. The book explores how nanomaterials are used in various air remediation techniques, including advanced oxidation processes, biological processes, and filtration. It also covers their combined use as nanocatalysts, nanoantibiotics, nanoadsorbents, nanocontainers, nanofiltrations and nanosensors. Major challenges to using nanomaterials for improving air quality on a mass scale, both practical and regulatory, are also presented. This is an important resource for materials scientists and environmental engineers who are looking to understand how nanotechnology is used to enhance air quality. Includes coverage of a wide range of nanomaterials, from biochemical to chemical materials, and nanomaterials supported photocatalysts Discusses how the properties of nanomaterials are being used to make more efficient air purification systems and products Assesses the practical and regulatory challenges of using different types of nanomaterials for air remediation

Metal Oxide Nanomaterials for Chemical Sensors

Author : Michael A. Carpenter
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This book presents a state-of-the-art summary and critical analysis of work recently performed in leading research laboratories around the world on the implementation of metal oxide nanomaterial research methodologies for the discovery and optimization of new sensor materials and sensing systems. The book provides a detailed description and analysis of (i) metal oxide nanomaterial sensing principles, (ii) advances in metal oxide nanomaterial synthesis/deposition methods, including colloidal, emulsification, and vapor processing techniques, (iii) analysis of techniques utilized for the development of low temperature metal oxide nanomaterial sensors, thus enabling a broader impact into sensor applications, (iv) advances, challenges and insights gained from the in situ/ex situ analysis of reaction mechanisms, and (v) technical development and integration challenges in the fabrication of sensing arrays and devices.

Science and Technology of Chemiresistor Gas Sensors

Author : Dinesh K. Aswal
File Size : 51.68 MB
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Gas sensor technology has advanced remarkably during past few decades and has become one of the indispensable technologies for modern society. Varieties of gas sensors are commercially available and, using innovative ideas, efforts are being made to develop gas sensors of next generation having very small size with very low power consumption. The ultimate model for this is probably given by sensory organs of our own body, which are implanted finely and work well with a very modest amount of energy. In order to achieve this goal, it is essential that various aspects of gas sensors are seriously considered. These include understanding of gas sensing mechanisms, development of new materials and methods to synthesise them into selective sensors, innovations in nanostructured materials, measurement methods, microfabrication of sensors, exploring intelligent sensing system, etc. This book examines these issues pertaining to chemiresistive gas sensors.

Gas Sensors

Author : G. Sberveglieri
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There were two reasons that induced me to plan and to organize this book, the first was the lack of a text entirely devoted to the subject of gas sensors, notwithstanding some books devoted to the various kind of chemical sensors have recently been published. The second reason was the need of introducing the basic topics of gas detection mechanisms to a growing number of researchers active in research and development laboratories of industries and uni versities. The field of chemical sensors is indeed in fast and consistent growth, as it is proved by the increased number of participants to the congresses that were recently held on this subject, namely the Third Meeting on Chemical Sensors (September 24 - 26, 1990, Cleveland), Transducers' 91 (June 24 - 27, 1991, S. Francisco) and EUROSENSORS V (September 30 - October 3, 1991, Rome). Therefore, this book is mainly intended as a reference text for researchers with a MS degree in physics, chemistry and electrical engineering; it reports the last progresses in the R. & D. and in the technology of gas sensors. I choose to deal specifically with the topic of gas sensors because these devices show a very large number of applications in the domestic and industrial field and they are characterized by a great effort of research and development.

Thermal Conductivity and Metal Oxide Gas Sensors

Author : Isolde Simon
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Gas Sensing Fundamentals

Author : Claus-Dieter Kohl
File Size : 70.24 MB
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This volume, which addresses various basic sensor principles, covers micro gravimetric sensors, semiconducting and nano tube sensors, calorimetric sensors and optical sensors. Furthermore, the authors discuss recent developments in the related sensitive layers including new properties of nano structured metal oxide layers. They provide in-depth insights into the unique chemistry and signal generation of copper oxide in percolating sensors and present a variety of applications of functional polymers made possible by proper imprinting. Highlights of the subjects covered include: • requirements for high-temperature sensors • carbon nano tube sensors • new sensing model for nanostructured In2O3 • bio mimetic approach for semiconductor sensor-based systems • optical readout for inorganic and organic semiconductor sensors • concept of virtual multisensors to improve specificity and selectivity • calorimetric sensors for hydrogen peroxide detection • percolation effect-based sensors to implement dosimeters • imprinted polymer layers for bulk and surface acoustic wave sensors

Smart Sensors for Environmental and Medical Applications

Author : Hamida Hallil
File Size : 70.83 MB
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Provides an introduction to the topic of smart chemical sensors, along with an overview of the state of the art based on potential applications This book presents a comprehensive overview of chemical sensors, ranging from the choice of material to sensor validation, modeling, simulation, and manufacturing. It discusses the process of data collection by intelligent techniques such as deep learning, multivariate analysis, and others. It also incorporates different types of smart chemical sensors and discusses each under a common set of sub-sections so that readers can fully understand the advantages and disadvantages of the relevant transducers—depending on the design, transduction mode, and final applications. Smart Sensors for Environmental and Medical Applications covers all major aspects of the field of smart chemical sensors, including working principle and related theory, sensor materials, classification of respective transducer type, relevant fabrication processes, methods for data analysis, and suitable applications. Chapters address field effect transistors technologies for biological and chemical sensors, mammalian cell–based electrochemical sensors for label-free monitoring of analytes, electronic tongues, chemical sensors based on metal oxides, metal oxide (MOX) gas sensor electronic interfaces, and more. Addressing the limitations and challenges in obtaining state-of-the-art smart biochemical sensors, this book: Balances the fundamentals of sensor design, fabrication, characterization, and analysis with advanced methods Categorizes sensors into sub-types and describes their working, focusing on prominent applications Describes instrumentation and IoT networking methods of chemical transducers that can be used for inexpensive, accurate detection in commercialized smart chemical sensors Covers monitoring of food spoilage using polydiacetylene- and liposome-based sensors; smart and intelligent E-nose for sensitive and selective chemical sensing applications; odor sensing system; and microwave chemical sensors Smart Sensors for Environmental and Medical Applications is an important book for senior-level undergraduate and graduate students learning about this high-performance technology and its many applications. It will also inform practitioners and researchers involved in the creation and use of smart sensors.

Matrix isolation Infrared Investigations of Metal Oxides and Small Organometallic Molecules and Lifetime based PH Sensing with Luminescent Rhenium Complexes

Author : William Douglas Bare
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Structure property Relationships of Oxide Surfaces and Interfaces

Author :
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Encyclopedia of Chemical Technology Recycling oil to silicon

Author :
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17th IEEE international conference on micro electro mechanical systems

Author : IEEE International Conference on Micro Electro Mechanical Systems 17, 2004, Maastricht, The Netherlands
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Technical Digest

Author :
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Coinage Metal Based Optical Small Molecule Sensors

Author : Omar Green
File Size : 75.76 MB
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Olfaction and Electronic Nose

Author : Matteo Pardo
File Size : 20.42 MB
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ISOEN addresses research in the fields of gas sensors and artificial olfactory systems. In this edition we broadened the participation spectrum to all kinds of analytical instrumentation for odor measurement and to biological olfaction. We also had a strong involvement in industry. The audience comprises materials scientists, chemists, physicists, engineers, biologists, computer scientists, and application specialists (e.g. food, medical, environmental, security).