Download or read book Films minces d oxydes pr par s par ablation laser puls written by Sandrine Autier-Laurent and published by . This book was released on 2005 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'objectif de cette thèse est d'utiliser la technique de l'ablation laser pulsé pour faire croître des matériaux différents et de comparer les propriétés des films par rapport à celles du matériau massif correspondant. Des films minces des composés CaCu3Ti4O12 (diélectrique) et CaCu2Mn5O12 (ferromagnétique) ont été réalisés. La croissance de ces composés de structure similaire a montré l'importance de la compatibilité chimique entre le film et le substrat dans la réalisation de films minces. Les propriétés des films sont soit semblables (CaCu3Ti4O12) soit légèrement différentes (CaCu2Mn5O12) de celles du matériau massif même si la structure est conservée.V2O3 est le troisième matériau étudié. Ce composé présente à l'état massif une transition métal/isolant (structurale et magnétique) autour de 150 K. La croissance de films minces de V2O3 a montré que, même si le groupe d'espace est conservé, la structure à température ambiante est déformée par rapport à celle du matériau massif. Les films réalisés possèdent des propriétés proches du matériau massif pour des températures supérieures à 150 K. Quand la structure est compressée selon l'axe c la transition métal/isolant est observée autour de 150 K par contre, lorsque la structure est fortement étirée selon l'axe c les films sont métalliques même à basse température. Lorsque la structure d'un matériau est conservée à l'état de film mince, les propriétés physiques des films s'apparentent à celles du matériau massif. Par contre, une déformation importante de la maille par rapport au matériau massif ainsi que le blocage d'une transition structurale par le substrat impliquent un changement des propriétés physiques du matériau.
Download or read book Croissance par ablation laser de films minces d oxyde pour la r alisation de structures optiquement guidantes written by Anne Roemer and published by . This book was released on 2004 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: Notre démarche générale s'inscrit dans la réalisation de structures optiquement guidantes sous forme de films minces pour des applications en optoélectronique intégrée. Le matériau choisi pour la réalisation de couches minces optiquement actives est le titanate de plomb PbTiO3 (PT). En effet, ses coefficients optiques non linéaires en font un excellent candidat pour la génération d'un faisceau laser bleu par doublage de fréquence d'une diode laser émettant à 980 nm. Si la génération de second harmonique est connue et assez bien maîtrisée dans les cristaux massifs, la transposition de ce principe aux matériaux en couches minces reste délicate à mettre en œuvre. Dans ce travail, les couches minces de titanate de plomb sont réalisées par ablation laser (ou pulsed-laser deposition : PLD). L'optimisation des conditions de croissance a permis d'obtenir des films minces orientés et épitaxiés d'excellente qualité morpho-stucturale sur substrat monocristallin de MgO (100). Leurs propriétés de guides d'onde étudiées par spectroscopie des lignes noires (m-lines) montrent que les caractéristiques optiques des films minces de PT sont identiques à celles du matériau massif. Les pertes optiques mesurées à 633 nm sont inférieures à 1 dB/cm, valeur qui constitue le meilleur résultat obtenu jusqu'à présent sur de tels systèmes (PbTiO3/Substrat). La perspective de réaliser des structures optiquement guidantes capables de générer un laser bleu par quasi accord de phase dans un dispositif intégré PT/MgO/Si pourrait s'envisager mais cela nécessite la réalisation du retournement périodique des domaines ferroélectriques avec une résolution que la technologie actuelle ne permet d'accéder.
Download or read book Journal de physique written by and published by . This book was released on 1999 with total page 956 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sol Gel Technologies for Glass Producers and Users written by Michel Andre Aegerter and published by Springer Science & Business Media. This book was released on 2013-03-19 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sol-Gel Techniques for Glass Producers and Users provides technological information, descriptions and characterizations of prototypes, or products already on the market, and illustrates advantages and disadvantages of the sol-gel process in comparison to other methods. The first chapter entitled "Wet Chemical Technology" gives a summary of the basic principles of the sol-gel chemistry. The most promising applications are related to coatings. Chapter 2 describes the various "Wet Chemical Coating Technologies" from glass cleaning to many deposition and post-coating treatment techniques. These include patterning of coatings through direct or indirect techniques which have became very important and for which the sol-gel processing is particularly well adapted. Chapter 3 entitled "Bulk Glass Technologies" reports on the preparation of special glasses for different applications. Chapter 4 entitled "Coatings and Materials Properties" describes the properties of the different coatings and the sol-gel materials, fibers and powders. The chapter also includes a section dedicated to the characterization techniques especially applied to sol-gel coatings and products.
Download or read book Advanced Techniques for Surface Engineering written by W. Gissler and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: Today's shortages of resources make the search for wear and corrosion resistant materials one of the most important tasks of the next century. Since the surface of a material is the location where any interaction occurs, it is that there the hardest requirements on the material are imposed: to be wear resistant for tools and bearings; to be corrosion resistant for turbine blades and tubes in the petrochemical industry; to be antireflecting for solar cells; to be decorative for architectural panels and to combine several of these properties in other applications. Surface engineering is the general term that incorporates all the techniques by which a surface modification can be accomplished. These techniques include both coating and modification of the surface by ion implantation and laser beam melting. In recent years a continuously growing number of these techniques were developed to the extent that it became more and more difficult to maintain an overlook and to understand which of these highly differentiated techniques might be applied to resolve a given surface engineering problem. A similar development is also occuring for surface characterization techniques. This volume contains contributions from renowned scientists and engineers to the Eurocourse the aim of which was to inform about the various techniques and to give a comprehensive survey of the latest development on this subject.
Download or read book ICREEC 2019 written by Ahmed Belasri and published by Springer Nature. This book was released on 2020-06-10 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights peer reviewed articles from the 1st International Conference on Renewable Energy and Energy Conversion, ICREEC 2019, held at Oran in Algeria. It presents recent advances, brings together researchers and professionals in the area and presents a platform to exchange ideas and establish opportunities for a sustainable future. Topics covered in this proceedings, but not limited to, are photovoltaic systems, bioenergy, laser and plasma technology, fluid and flow for energy, software for energy and impact of energy on the environment.
Download or read book Canadian Journal of Physics written by and published by . This book was released on 1996 with total page 1024 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electrospun Nanofibers written by Mehdi Afshari and published by Woodhead Publishing. This book was released on 2016-09-13 with total page 650 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electrospun Nanofibers covers advances in the electrospinning process including characterization, testing and modeling of electrospun nanofibers, and electrospinning for particular fiber types and applications. Electrospun Nanofibers offers systematic and comprehensive coverage for academic researchers, industry professionals, and postgraduate students working in the field of fiber science. Electrospinning is the most commercially successful process for the production of nanofibers and rising demand is driving research and development in this field. Rapid progress is being made both in terms of the electrospinning process and in the production of nanofibers with superior chemical and physical properties. Electrospinning is becoming more efficient and more specialized in order to produce particular fiber types such as bicomponent and composite fibers, patterned and 3D nanofibers, carbon nanofibers and nanotubes, and nanofibers derived from chitosan. - Provides systematic and comprehensive coverage of the manufacture, properties, and applications of nanofibers - Covers recent developments in nanofibers materials including electrospinning of bicomponent, chitosan, carbon, and conductive fibers - Brings together expertise from academia and industry to provide comprehensive, up-to-date information on nanofiber research and development - Offers systematic and comprehensive coverage for academic researchers, industry professionals, and postgraduate students working in the field of fiber science
Download or read book Office Based Infertility Practice written by David B. Seifer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 323 pages. Available in PDF, EPUB and Kindle. Book excerpt: The practice of clinical reproductive medicine has practice in the era of managed care and coordinat gradually moved from its initial 1980-90 hospital ing ancillary offsite medical personnel. base to its present (circa 2001) office site of oper The objective of this text is to assist in this ongo ation. With this transition have been improvements ing endeavor by presenting in a clear, concise man in efficiency of practice often in response to ner many of the topics relevant to contemporary increased pressure to provide the most patient sat office-based infertility practice. The initial half of isfaction. An added challenge of office-based prac this text addresses topics which focus upon general tice has been taking on many of the responsibili concepts of infertility evaluation and practice. The ties of what had been traditionally the hospital's latter half is a practical approach to the execution domain. Some of these new responsibilities have of specific office-based infertility procedures. We included the ordering of operative supplies and hope this book will assist all medical personnel who equipment, the establishment of quality control dedicate their clinical effort in achieving what is programs, construction and maintenance of special most coveted by our patients, the birth of a healthy laboratory spaces, redesigning efficient methods of newborn. DAVID B. SEIFER, M. D. UMDNJ-Robert Wood Johnson Medical School ROBERT L. COLLINS, M. D. The Reproductive Center, Youngstown, Ohio October 2001 vii Contents Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii . . . . . . . . . . . . . . . . . Contributors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi . . . . . . . . . . . . . . . . . 1 Evaluation of the Female for Infertility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Bryan D.
Download or read book Principles of Vapor Deposition of Thin Films written by Professor K.S. K.S Sree Harsha and published by Elsevier. This book was released on 2005-12-16 with total page 1173 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of producing devices that are smaller, faster, more functional, reproducible, reliable and economical has given thin film processing a unique role in technology.Principles of Vapor Deposition of Thin Films brings in to one place a diverse amount of scientific background that is considered essential to become knowledgeable in thin film depostition techniques. Its ultimate goal as a reference is to provide the foundation upon which thin film science and technological innovation are possible.* Offers detailed derivation of important formulae.* Thoroughly covers the basic principles of materials science that are important to any thin film preparation.* Careful attention to terminologies, concepts and definitions, as well as abundance of illustrations offer clear support for the text.
Download or read book Coatings on Glass written by Hans K. Pulker and published by . This book was released on 1984 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Multifunctional Oxide Heterostructures written by Evgeny Y. Tsymbal and published by OUP Oxford. This book was released on 2012-08-30 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is devoted to the rapidly developing field of oxide thin-films and heterostructures. Oxide materials combined with atomic-scale precision in a heterostructure exhibit an abundance of macroscopic physical properties involving the strong coupling between the electronic, spin, and structural degrees of freedom, and the interplay between magnetism, ferroelectricity, and conductivity. Recent advances in thin-film deposition and characterization techniques made possible the experimental realization of such oxide heterostructures, promising novel functionalities and device concepts. The book consists of chapters on some of the key innovations in the field over recent years, including strongly correlated oxide heterostructures, magnetoelectric coupling and multiferroic materials, thermoelectric phenomena, and two-dimensional electron gases at oxide interfaces. The book covers the core principles, describes experimental approaches to fabricate and characterize oxide heterostructures, demonstrates new functional properties of these materials, and provides an overview of novel applications.
Download or read book Sol Gel Optics written by Lisa C. Klein and published by Springer Science & Business Media. This book was released on 2013-11-27 with total page 589 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sol--Gel--Optics encompasses numerous schemes for fabricating optical materials from gels -- materials such as bulk optics, optical waveguides, doped oxides for laser and nonlinear optics, gradient refractive index (GRIN) optics, chemical sensors, environmental sensors, and `smart' windows. Sol--Gel--Optics: Processing and Applications provides in-depth coverage of the synthesis and fabrication of these materials and discusses the optics related to microporous, amorphous, crystalline and composite materials. The reader will also find in this book detailed descriptions of new developments in silica optics, bulk optics, waveguides and thin films. Various applications to sensor and device technology are highlighted. For researchers and students looking for novel optical materials, processing methods or device ideas, Sol--Gel--Optics: Processing and Applications surveys a wide array of promising new avenues for further investigation and for innovative applications. (This book is the first in a new subseries entitled `Electronic Materials: Science and Technology).
Download or read book Geometrical And Physical Optics written by R.S. Longhurst and published by Orient Blackswan. This book was released on 1986 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt: First Published In India In 1986, This Book Is Intended Primarily For Undergraduate Students Of Physics. It Will Also Be Useful For Postgraduate Students Specialising In Optics. This Revised Edition Incorporates New Material, Including The Techniques Of Matrix Algebra And Fourier Methods In Solving Problems In Optics. The Chapter On Photometry Has Been Revised. Important Problems Have Been Outlined Along With Comments, At The End Of The Book.
Download or read book Plant Nanobionics written by Ram Prasad and published by Springer. This book was released on 2019-04-30 with total page 397 pages. Available in PDF, EPUB and Kindle. Book excerpt: An improved understanding of the interactions between nanoparticles and plant retorts, including their uptake, localization, and activity, could revolutionize crop production through increased disease resistance, nutrient utilization, and crop yield. This may further impact other agricultural and industrial processes that are based on plant crops. This two-volume book analyses the key processes involved in the nanoparticle delivery to plants and details the interactions between plants and nanomaterials. Potential plant nanotechnology applications for enhanced nutrient uptake, increased crop productivity and plant disease management are evaluated with careful consideration regarding safe use, social acceptance and ecological impact of these technologies. Plant Nanobionics: Volume 1, Advances in the Understanding of Nanomaterials Research and Applications begins the discussion of nanotechnology applications in plants with the characterization and nanosynthesis of various microbes and covers the mechanisms and etiology of nanostructure function in microbial cells. It focuses on the potential alteration of plant production systems through the controlled release of agrochemicals and targeted delivery of biomolecules. Industrial and medical applications are included. Volume 2 continues this discussion with a focus on biosynthesis and toxicity.
Download or read book Ferroelectric Thin Films written by Carlos Paz de Araujo and published by Taylor & Francis. This book was released on 1996 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: The impetus for the rapid development of thin film technology, relative to that of bulk materials, is its application to a variety of microelectronic products. Many of the characteristics of thin film ferroelectric materials are utilized in the development of these products - namely, their nonvolatile memory and piezoelectric, pyroelectric, and electro-optic properties. It is befitting, therefore, that the first of a set of three complementary books with the general title Integrated Ferroelectric Devices and Technologies focuses on the synthesis of thin film ferroelectric materials and their basic properties. Because it is a basic introduction to the chemistry, materials science, processing, and physics of the materials from which integrated ferroelectrics are made, newcomers to this field as well as veterans will find this book self-contained and invaluable in acquiring the diverse elements requisite to success in their work in this area. It is directed at electronic engineers and physicists as well as process and system engineers, ceramicists, and chemists involved in the research, design, development, manufacturing, and utilization of thin film ferroelectric materials.
