Download or read book Self Powered Infrared Detection in Low Dimensional Carbon Assemblies written by Mingyu Zhang and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Room-temperature mid-infrared photodetection meet upcoming demands including real-time health condition monitoring, low-cost industrial inspection and distributive sensing for Internet-of-Things. Photo-thermoelectric (PTE) effect is a bandgap limitless photodetection mechanism which utilizes photons induced thermoelectric effect at material interfaces. The 1/f noise and shot noise in dark current can be significantly reduced in a zero-biased PTE detector. Carbon nanotubes (CNTs) and graphene are emerging low-dimensional materials with excellent PTE properties. Besides the strong and broadband light-matter interaction, their increased electrical to thermal conductivity ratio and electron density-of-states dependence on energy also lead to enhanced thermoelectric conversion efficiency. In this thesis, we present two self-powered PTE detection architectures. In the first one, vertical photo-thermoelectric effect of an anti-reflecting carbon nanotube forest (CNTF) is employed in a broadband mid-infrared detector. 99.4% average reflection suppression in the CNTF at 2.5~25 μm spectral range enables responsivity of 6 V W-1 and detectivity of 2.2×107 cm Hz1/2 W-1 under very weak illumination power, rendering sensitive weak infrared photodetection in real life. Top-electrode material, thickness and patterns are systematically studied related to the PTE response, and further improvement is possible by increasing the CNTF height and reducing the photosensitive area. In the second architecture, CNTs/Poly vinyl alcohol (PVA) composite based planar photodetector with asymmetric metallic electrodes is investigated. PTE voltage response is optimized via mixing 25 wt.% CNTs into PVA matrix attributed to the enhanced phonon scattering at CNTs/PVA interfaces. Moreover, crystallization of PVA around CNTs networks contributes to a rather stable photoresponse (variation

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 1102 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book STAR written by and published by . This book was released on 1973 with total page 890 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1973 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nanostructured Functional and Flexible Materials for Energy Conversion and Storage Systems written by Alagarsamy Pandikumar and published by Elsevier. This book was released on 2020-05-27 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanostructured, Functional, and Flexible Materials for Energy Conversion and Storage Systems gathers and reviews developments within the field of nanostructured functional materials towards energy conversion and storage. Contributions from leading research groups involved in interdisciplinary research in the fields of chemistry, physics and materials science and engineering are presented. Chapters dealing with the development of nanostructured materials for energy conversion processes, including oxygen reduction, methanol oxidation, oxygen evolution, hydrogen evolution, formic acid oxidation and solar cells are discussed. The work concludes with a look at the application of nanostructured functional materials in energy storage system, such as supercapacitors and batteries. With its distinguished international team of expert contributors, this book will be an indispensable tool for anyone involved in the field of energy conversion and storage, including materials engineers, scientists and academics. Covers the importance of energy conversion and storage systems and the application of nanostructured functional materials toward energy-relevant catalytic processes Discusses the basic principles involved in energy conversion and storage systems Presents the role of nanostructured functional materials in the current scenario of energy-related research and development

Download or read book Nanopapers written by Wenyi Huang and published by William Andrew. This book was released on 2017-10-19 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanopapers: From Nanochemistry and Nanomanufacturing to Advanced Applications gives a comprehensive overview of the emerging technology of nanopapers. Exploring the latest developments on nanopapers in nanomaterials chemistry and nanomanufacturing technologies, this book outlines the unique properties of nanopapers and their advanced applications. Nanopapers are thin sheets or films made of nanomaterials such as carbon nanotubes, carbon nanofibers, nanoclays, cellulose nanofibrils, and graphene nanoplatelets. Noticeably, nanopapers allow highly concentrated nanoparticles to be tightly packed in a thin film to reach unique properties such as very high electrical and thermal conductivities, very low diffusivity, and strong corrosion resistance that are shared by conventional polymer nanocomposites. This book presents a concise introduction to nanopapers, covering concepts, terminology and applications. It outlines both current applications and future possibilities, and will be of great use to nanochemistry and nanomanufacturing researchers and engineers who want to learn more about how nanopapers can be applied. - Outlines the main uses of nanopapers, showing readers how this emerging technology should best be applied - Shows how the unique properties of nanopapers make them adaptable for use in a wide range of applications - Explores methods for the nanomanufacture of nanopapers

Download or read book Composite and Nanocomposite Materials written by Tri-Dung Ngo and published by BoD – Books on Demand. This book was released on 2020-07-15 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Among the modern materials, the composites have a few decades of history. However, there has been a tremendous advancement of this class of material in science and technology. During recent decades, composite materials have steadily gained ground in nearly all sectors. The composite materials have been used in various industrial applications such as buildings and constructions, aerospace, automotive and sports equipment, consumer products etc. Nanotechnology is rapidly evolving, and science, engineering, and technology have merged to bring nanoscale materials that much closer to reality. It is one of the fastest growing areas for research. Nanocomposite materials are helping improve products that we use every day and creating new, exciting products for the future. Composites and nanocomposites composed of reinforcements, nano-reinforcements, and matrices are well-known engineering materials. Keeping in mind the advantages of composite and nanocomposite materials, this book covers fundamental effects, product development, properties, and applications of the materials including material chemistry, designing, and manufacturing. The book also summarizes the recent developments made in the area of advanced composite and nanocomposite materials. A number of critical issues and suggestions for future work are discussed, underscoring the roles of researchers for the efficient development of composites and nanocomposites through value additions to enhance their use.

Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 974 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NASA Tech Brief written by and published by . This book was released on 1970 with total page 792 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cumulative Index to NASA Tech Briefs written by and published by . This book was released on with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 1048 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NASA Tech Briefs written by and published by . This book was released on 1988 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Keywords Index to U S Government Technical Reports permuted Title Index written by United States. Department of Commerce. Office of Technical Services and published by . This book was released on 1962 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NASA Patent Abstracts Bibliography written by United States. National Aeronautics and Space Administration. Scientific and Technical Information Program and published by . This book was released on 1993 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Materials for Optoelectronics written by Maurice Quillec and published by Springer Science & Business Media. This book was released on 1996-01-31 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optoelectronics ranks one of the highest increasing rates among the different industrial branches. This activity is closely related to devices which are themselves extremely dependent on materials. Indeed, the history of optoelectronic devices has been following closely that of the materials. KLUWER Academic Publishers has thus rightly identified "Materials for Optoelectronics" as a good opportunity for a book in the series entitled "Electronic Materials; Science and Technology". Although a sound background in solid state physics is recommended, the authors have confined their contribution to a graduate student level, and tried to define any concept they use, to render the book as a whole as self-consistent as possible. In the first section the basic aspects are developed. Here, three chapters consider semiconductor materials for optoelectronics under various aspects. Prof. G. E. Stillman begins with an introduction to the field from the point of view of the optoelectronic market. Then he describes how III-V materials, especially the Multi Quantum Structures meet the requirements of optoelectronic functions, including the support of microelectronics for optoelectronic integrated circuits. In chapter 2, Prof.

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1959 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Keywords Index to U S Government Technical Reports written by and published by . This book was released on 1962 with total page 1160 pages. Available in PDF, EPUB and Kindle. Book excerpt: