Download or read book Gas Sensor Evaluation and Application of Single walled Carbon Nanotubes to Gas Sensing written by Go Hyun Chung and published by . This book was released on 2006 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Carbon Nanotube Based Sensors written by Anindya Nag and published by CRC Press. This book was released on 2024-05-02 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon Nanotube-Based Sensors: Fabrication, Characterization, and Implementation highlights the latest research and developments on carbon nanotubes (CNTs) and their applications in sensors and sensing systems. It offers an overview of CNTs, including their synthesis, functionalization, characterization, and toxicology. It then delves into the fabrication and various applications of CNT-based sensors. FEATURES Defines the significance of different forms of CNT-based sensors synthesized for diverse engineering applications and compares the feasibility of their generation Helps readers evaluate different types of fabrication techniques to generate CNTs and their subsequent sensing Discusses fabrication of low-cost, efficient CNTs-based sensors that can be used for diverse applications and sheds light on synthesis methods for a range of printing techniques Highlights challenges and advances in security-related issues using CNTs-based sensors This book is aimed at researchers in the fields of materials and electrical engineering who are interested in the development of sensor technology for industrial, biomedical, and related applications.
Download or read book Smart Sensors and Sensing Technology written by Gourab Sen Gupta and published by Springer Science & Business Media. This book was released on 2008-07-01 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Technological advancements in recent years have enabled the development of tiny, cheap disposable and self contained battery powered computers, known as sensor nodes or “motes”, which can accept input from an attached sensor, process this input and transmit the results wirelessly to some interested device(s). When a number of these nodes work together, conceivably up to hundreds of thousands, a Wireless Sensor Network (WSN) is formed. Research in the area of wireless sensor networks has become increasingly wid- pread in recent years, partly due to their wide range of potential uses and also partly due to the fact that the technology enabling such networks is now widely available from many di?erent suppliers, such as: Crossbow, MoteIV, Intel and SUN (java based motes). These wireless sensor networks have the potential to allow a level of integration between computers and the physical world that, to date, has been virtually impos- ble. The uses for such networks is almost limitless and include such diverse app- cations as a counter sniper system for urban warfare [1] tracking the path of a forest re [2], determining the structural stability of a building after an earthquake [3], or tracking people or objects inside a building [4], etc.
Download or read book Development of Functionalized Single walled Carbon Nanotube Gas Sensors written by Ting Zhang and published by . This book was released on 2007 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Semiconductor Gas Sensors written by Raivo Jaaniso and published by Woodhead Publishing. This book was released on 2019-09-24 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiconductor Gas Sensors, Second Edition, summarizes recent research on basic principles, new materials and emerging technologies in this essential field. Chapters cover the foundation of the underlying principles and sensing mechanisms of gas sensors, include expanded content on gas sensing characteristics, such as response, sensitivity and cross-sensitivity, present an overview of the nanomaterials utilized for gas sensing, and review the latest applications for semiconductor gas sensors, including environmental monitoring, indoor monitoring, medical applications, CMOS integration and chemical warfare agents. This second edition has been completely updated, thus ensuring it reflects current literature and the latest materials systems and applications. - Includes an overview of key applications, with new chapters on indoor monitoring and medical applications - Reviews developments in gas sensors and sensing methods, including an expanded section on gas sensor theory - Discusses the use of nanomaterials in gas sensing, with new chapters on single-layer graphene sensors, graphene oxide sensors, printed sensors, and much more
Download or read book Nanostructured Gas Sensors written by Ankur Gupta and published by CRC Press. This book was released on 2023-01-06 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanostructured materials exhibit distinct properties by virtue of their nanoscale morphological variations, which open up endless possibilities to investigate unexplored and interesting applications. This textbook broadly covers the fabrication and characterization of nanostructured films and exploration of their gas-sensing applications. It presents the fundamentals of gas-sensing technology and a comprehensive study on smart gas sensing technology. Readers will find basics, analytical techniques, nanotechnology-enabled experimental findings, and future directions of smart gas-sensing technology at one place. Through the inclusion of up-to-date experimental knowledge of synthesis, processing, and application development, the book is suitable for academics at all levels.
Download or read book MEMS and Nanotechnology for Gas Sensors written by Sunipa Roy and published by CRC Press. This book was released on 2017-12-19 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: How Can We Lower the Power Consumption of Gas Sensors? There is a growing demand for low-power, high-density gas sensor arrays that can overcome problems relative to high power consumption. Low power consumption is a prerequisite for any type of sensor system to operate at optimum efficiency. Focused on fabrication-friendly microelectromechanical systems (MEMS) and other areas of sensor technology, MEMS and Nanotechnology for Gas Sensors explores the distinct advantages of using MEMS in low power consumption, and provides extensive coverage of the MEMS/nanotechnology platform for gas sensor applications. This book outlines the microfabrication technology needed to fabricate a gas sensor on a MEMS platform. It discusses semiconductors, graphene, nanocrystalline ZnO-based microfabricated sensors, and nanostructures for volatile organic compounds. It also includes performance parameters for the state of the art of sensors, and the applications of MEMS and nanotechnology in different areas relevant to the sensor domain. In addition, the book includes: An introduction to MEMS for MEMS materials, and a historical background of MEMS A concept for cleanroom technology The substrate materials used for MEMS Two types of deposition techniques, including chemical vapour deposition (CVD) The properties and types of photoresists, and the photolithographic processes Different micromachining techniques for the gas sensor platform, and bulk and surface micromachining The design issues of a microheater for MEMS-based sensors The synthesis technique of a nanocrystalline metal oxide layer A detailed review about graphene; its different deposition techniques; and its important electronic, electrical, and mechanical properties with its application as a gas sensor Low-cost, low-temperature synthesis techniques An explanation of volatile organic compound (VOC) detection and how relative humidity affects the sensing parameters MEMS and Nanotechnology for Gas Sensors provides a broad overview of current, emerging, and possible future MEMS applications. MEMS technology can be applied in the automotive, consumer, industrial, and biotechnology domains.
Download or read book Wafer scale Integration of Single walled Carbon Nanotubes for Gas Sensing written by Kiran Chikkadi and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Carbon Nanomaterials and their Nanocomposite Based Chemiresistive Gas Sensors written by Shivani Dhall and published by Elsevier. This book was released on 2023-01-20 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon Nanomaterials and their Nanocomposite-Based Chemiresistive Gas Sensors: Applications, Fabrication and Commercialization sets out how carbon nanomaterials based chemiresistive gas sensor are made, and their applications at lab and industrial levels. The book focuses on major advances in the field of chemiresistive gas sensors in recent years and their potential applications in environmental monitoring and healthcare. Carbon Nanomaterials and their Nanocomposite-Based Chemiresistive Gas Sensors: Applications, Fabrication and Commercialization provides systematic and effective guidelines to the researchers as well as learners about sensor, their fabrication and applications. Chemiresistive sensors are widely used in automation of numerous industrial processes as well as for everyday monitoring of various activities as public safety, engine performance, medical therapeutics, and in many other situations hence the book will catch the attention of readers and motivate them for advanced research for the development of smart and efficient gas sensors. With full coverage of the state of the art in this active research field, the book will appeal to researchers in a broad range of disciplines, including nanotechnology, engineering, materials science, chemistry and physics. - Offers a one-stop resource, bringing together information currently scattered over journal papers, industrial/lab outcomes and project reports - Presents information about the properties, synthesis of nanomaterials, their device fabrication and applications as sensing materials - Combining fundamental, experimental and theoretical knowledge with industrial needs and engineering design methods
Download or read book Single Walled Carbon Nanotube Network Gas Sensor written by Sunglyul Maeng and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nanosensors for Smart Manufacturing written by Sabu Thomas and published by Elsevier. This book was released on 2021-06-10 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanosensors for Smart Manufacturing provides information on the fundamental design concepts and emerging applications of nanosensors in smart manufacturing processes. In smart production, if the products and machines are integrated, embedded, or equipped with sensors, the system can immediately collect the current operating parameters, predict the product quality, and then feed back the optimal parameters to machines in the production line. In this regard, smart sensors and their wireless networks are important components of smart manufacturing. Nanomaterials-based sensors (nanosensors) offer several advantages over their microscale counterparts, including lower power consumption, fast response time, high sensitivity, lower concentration of analytes, and smaller interaction distance between sensors and products. With the support of artificial intelligence (AI) tools such as fuzzy logic, genetic algorithms, neural networks, and ambient intelligence, sensor systems have become smarter. This is an important reference source for materials scientists and engineers who want to learn more about how nanoscale sensors can enhance smart manufacturing techniques and processes. - Outlines the smart nanosensor classes used in manufacturing applications - Shows how nanosensors are being used to make more efficient manufacturing systems - Assesses the major obstacles to designing nanosensor-based manufacturing systems at an industrial scale
Download or read book Syntheses and Applications of Carbon Nanotubes and Their Composites written by Satoru Suzuki and published by BoD – Books on Demand. This book was released on 2013-05-09 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon nanotubes are rolled up graphene sheets with a quasi-one-dimensional structure of nanometer-scale diameter. In these last twenty years, carbon nanotubes have attracted much attention from physicists, chemists, material scientists, and electronic device engineers, because of their excellent structural, electronic, optical, chemical and mechanical properties. More recently, demand for innovative industrial applications of carbon nanotubes is increasing. This book covers recent research topics regarding syntheses techniques of carbon nanotubes and nanotube-based composites, and their applications. The chapters in this book will be helpful to many students, engineers and researchers working in the field of carbon nanotubes.
Download or read book Gas Sensors written by Ankur Gupta and published by CRC Press. This book was released on 2022-11-28 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the whole range of gas sensing aspects starting from basics, synthesis, processing, characterization, and application developments. All sub-topics within the domain of gas sensors such as active materials, novel nanomaterials, working mechanisms, fabrication techniques, computational approach, and development of microsensors, and latest advancements such as the Internet of Things (IoT) in gas sensors, and nanogenerators, are explained as well. Related manufacturing sections and proposed direction of future research are also reviewed. Features: Covers detailed state-of-the-art specific chemiresistive sensing materials. Presents novel nanomaterial platforms and concepts for resistive gas sensing. Reviews pertinent aspects of smart sensors and IoT sensing. Explains nanotechnology-enabled experimental findings, and future directions of smart gas sensing technology. Explores implication of latest advancements such as IoT in gas sensors, and nanogenerators. This book is aimed at academic researchers and professionals in sensors and actuators, nanotechnology, and materials science.
Download or read book Toxic Gas Sensors and Biosensors written by Inamuddin and published by Materials Research Forum LLC. This book was released on 2021-02-15 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book focuses on novel sensor materials and their environmental and healthcare applications, such as NO2 detection, toxic gas and biosensing, hydrazine determination, glucose sensing and the detection of toxins and pollutants on surfaces. Materials covered include catalytic nanomaterials, metal oxides, perovskites, zeolites, spinels, graphene-based gas sensors, CNT/Ni nanocomposites, glucose biosensors, single and multi-layered stacked MXenes, black phosphorus, transition metal dichalcogenides and P3OT thin films. Keywords: Toxic Gas Sensors, Biosensors, Nitrogen Dioxide Detection, Hydrazine Determination, Glucose Sensing, Catalytic Nanomaterials, Metal Oxides, Perovskites, Zeolites, Spinels, Graphene-based Gas Sensors, CNT/Ni Nanocomposites, Mxenes, Black Phosphorus, Transition Metal Dichalcogenides, P3OT Thin Films.
Download or read book Metal and Metal Oxide Nanoparticles Functionalized Single walled Carbon Nanotube Based Gas Sensors written by Syed Mubeen Jawahar Hussaini and published by . This book was released on 2009 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Carbon Nanotubes written by Mohamed Berber and published by BoD – Books on Demand. This book was released on 2016-07-20 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book shows the recent advances of the applications of carbon nanotubes (CNTs), in particular, the polymer functionalized carbon nanotubes. It also includes a comprehensive description of carbon nanotubes' preparation, properties, and characterization. Therefore, we have attempted to provide detailed information about the polymer-carbon nanotube composites. With regard to the unique structure and properties of carbon nanotubes, a series of important findings have been reported. The unique properties of carbon nanotubes, including thermal, mechanical, and electrical properties, after polymer functionalization have been documented in detail. This book comprises 18 chapters. The chapters include different applications of polymer functionalization CNTs, e.g. photovoltaic, biomedical, drug delivery, gene delivery, stem cell therapy, thermal therapy, biological detection and imaging, electroanalytical, energy, supercapacitor, and gas sensor applications.
Download or read book Characterizing the Role of Defects on the Sensing Performance of Carbon Nanotube and Graphene Based Gas Sensors written by Kevin Y. Lin and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The major theme of this thesis is to investigate the influence of defects on the sensing mechanisms and performance of gas sensors made from films of carbon nanotubes, chemical vapor deposition (CVD) graphene film, CVD graphene ribbons, and surfactant exfoliated graphene. The definition of defects on carbon materials is the disordered carbon atoms formed due to dislocations, vacancies, and deformations. These defects were introduced during processing. The thesis is separated into three sections that analyze various types of defects on these carbon based chemical sensors. First section focuses on single-walled carbon nanotubes with point defects. It will be demonstrated that these point defects can alter the main sensing mechanism of the CNT based sensors. There is a controversy in literature on whether the sensing response seen in carbon nanotube chemiresistors is associated with a change in the resistance of the individual carbon nanotubes or changes in the resistance of the junctions. A network analysis was carried out to better understand the relative contributions of the carbon nanotubes and the junctions on the change in resistance of the carbon nanotube network. It was found that the dominant mode of detection in carbon nanotube networks changes according to the defect level in the carbon nanotubes which may explain the apparently contradictory results in the literature. With high concentration of the point defects in the carbon nanotube film along with applying high electric field, the Poole-Frenkle conduction regime can be induced. Generally, desorption of gases from carbon nanotubes is a slow process that limits the carbon nanotubes0́9 utility as sensors. It will be demonstrated that electron flows in the carbon nanotube above the Poole-Frenkel conduction threshold can stimulate adsorbates to desorb without heating the sensor significantly. This desorption process is analogous to electron stimulated desorption, but with an internally conducted rather than externally applied source of electrons. As a result, this gives a fast and reversible CNT sensor within seconds. An application can be utilized to use carbon nanotubes based GC detector for multi-component chemical analysis. The approach is to use a CNT based detector in a series configuration with a gas chromatography column. It will demonstrated that a mixture of nine different compounds can be detected with these CNT based detectors when the detector operates in current stimulated desorption (CSD) mode. This is the first demonstration of a CNT based GC detector to analyze multi-component gas mixtures providing a new sensing approach for online air quality control and health monitoring applications. The second section of the thesis focuses on analyzing two-dimensional line defects arises from wrinkles and grain boundaries as well as edge defected created manually on the graphene film synthesized with chemical vapor deposition (CVD) process. Due to two-dimensional nature of the graphene film, adsorption of isolated analyte molecules on point defects has minimal effect on graphene resistance because current pathways can always form around the adsorbate. In contrast, analytes adsorbing on line defects lead to significant changes in resistance. It will be demonstrated that polycrystalline graphene easily obtained through chemical vapor deposition contains line defects. This can offer a scalable path to 50x more sensitive chemiresistors than mechanically exfoliated crystalline graphene. Moreover, current flow can be confined by cutting the polycrystalline graphene into ribbons, the sensitivity increases by another factor of four. These results show that polycrystalline graphene has extraordinary sensitivity, achieved through geometry and linear defect density. The last section of the thesis focuses on intrinsic two-dimensional edge defects on graphene isolated with sodium cholate surfactant assisted exfoliation of graphite powders. With this technique, it is possible to produce high edge defect concentrations for individual graphene island due to its micron-sized dimension offering more defects per unit area. Various randomly-stacked oxide-free graphene films can be formed with various filtration volumes. It will be demonstrated the films produced can range 6 orders of magnitude in film conductance. At thinner graphene films, the electron transport mechanism is mainly through two-dimensional variable range hopping. At thicker graphene films, electron transport is through fluctuation-assisted tunneling. It is also observed the graphene films go from semiconducting-like to metallic-like behavior at around 8 mL filtration volume. At low filtration volumes, oxide-free randomly stacked graphene film sensors showed better sensitivity towards target molecules compared to polycrystalline/ribbon graphene and defective CNT gas sensors due to two-dimensional electron hopping. As the graphene film thickness increases, there is a shift in conduction mechanism from two-dimensional electron hopping to metallic-like conduction which explains the drop in sensitivity as the filtration volume increases.
