Download or read book Sol gel Optics written by and published by . This book was released on 1997 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book R alisation de couches minces antireflet sur des substrats organiques par le proc d sol gel et par le spin coating written by Franck Bissuel and published by . This book was released on 1996 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'ETUDE CONCERNE LE DEPOT PAR SPIN-COATING DE COUCHES MINCES SOL-GEL, EN VUE DE LA REALISATION DE SYSTEMES ANTIREFLET. IL EST MONTRE QUE L'EPAISSEUR DU FILM EST FONCTION DE LA TEMPERATURE DE DEPOT, DE LA PRESSION PARTIELLE DES SOLVANTS, DE LEUR VITESSE D'EVAPORATION, DE LA VITESSE DE ROTATION DU SUBSTRAT ET DE LA CONCENTRATION DES SOLUTIONS. PAR CONTRE, L'INDICE DE REFRACTION RESTE CONSTANT QUELS QUE SOIENT LES VALEURS DE CES PARAMETRES. ON PEUT CONCLURE QUE LA COUCHE NE GELIFIE PAS LORS DU DEPOT MAIS LORS DU TRAITEMENT THERMIQUE. LA FAIBLE TEMPERATURE DE TRAITEMENT THERMIQUE IMPOSEE PAR LE CHOIX DES SUBSTRATS UTILISES CONDUIT A RECHERCHER D'AUTRES VOIES POUR DENSIFIER LES COUCHES. DES TECHNIQUES CHIMIQUES (PH, EVAPORATION SOUS VIDE) ET PHYSIQUES (TRAITEMENT FLASH, COMPRESSION ISOSTATIQUE) SONT ANALYSEES. LA SOLUTION REALISEE A PH = 1 ET EN HYDROLYSANT SEPAREMENT LES DIFFERENTS PRECURSEURS, SEMBLE ETRE LA MEILLEURE. BIEN QUE DELICATE A REPRODUIRE, LA TECHNIQUE DE TRAITEMENT FLASH PEUT EGALEMENT S'AVERER EFFICACE. ENFIN, UN REVETEMENT ANTIREFLET EST REALISE SUR LA BASE D'UN EMPILEMENT A TROIS COUCHES. LA PREMIERE COUCHE EST UN AGENT DE COUPLAGE: LE CHLORURE METACRYLIQUE DE CHROME. SUR CETTE COUCHE EST DEPOSEE UNE COUCHE D'OXYDE DE TITANE EN REALISANT L'HYDROLYSE D'UN ALCOXYDE GRACE A L'HUMIDITE DE L'AIR. L'AJOUT D'UNE COUCHE DE SILICE CONFERE A NOTRE DEPOT DE BONNES PROPRIETES ANTIREFLET, COMPARABLES A CELLES QUI AVAIENT ETE MODELISEES INITIALEMENT

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 Frontiers of Polymers and Advanced Materials written by Paras N. Prasad and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 691 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the proceedings of the Second International Conference on Frontiers of Polymers and Advanced Materials held in Jakarta, Indonesia during January 10-15, 1993. This conference was organized and sponsored by the Indonesian Institute of Sciences (LIPI), the State University of New York (SUNY) at Buffalo, the Agency for Assessment and Application of Technology (BPPT), and the Indonesian Polymer Association. The 244 participants represented a total of 24 countries and a wide variety of academic, industrial and government groups. The inauguration was held in the Royal Palace and was performed by President Soeharto of Indonesia. High level media coverage ensured worldwide recognition. The need for such a conference was emphasized by the fact that polymers have emerged as an important class of materials offering challenging opportunities for both fundamental research and new technological applications. There has been a tremendous growth of interest in the field of polymers, both in academia and in industry, and polymer science offers tremendous opportunities for both fundamental and applied work. This globally represented Second International Conference on Frontiers of Polymers and Advanced Materials was timely, especially given the current heightened enthusiasm for polymers and emerging novel applications.

Download or read book Etude d empilements multicouches colloidaux pr par s par voie sol gel written by Xavier Dieudonné and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les procédés de dépôt de couches minces optiques par voie physique ou par voie sol-gel présentent par nature des limitations pour la réalisation de revêtements épais (>1 μm) et ont alors recours à des empilements multicouches pour la préparation de miroirs diélectriques ou de polariseurs. C'est pour ces raisons qu'il est intéressant d'étudier les conditions permettant d'augmenter l'épaisseur critique des films sol-gel notamment. Après avoir étudié la capacité d'empilements des couches colloïdales, trois principaux paramètres ont été identifiés permettant d'augmenter l'épaisseur critique d'empilements monomatériaux et multimatériaux. Ces paramètres sont : l'épaisseur déposée,les interactions chimiques entre les particules et le temps de séchage du film. Ils influencent la microstructure des empilements et par conséquent les propriétés optiques et mécaniques. En contrôlant tous ces paramètres, nous avons montré qu'il est possible de préparer des empilements colloïdaux de fortes épaisseurs ouvrent la voie à la préparation sol-gel de miroirs de hautes performances et/ou de polariseurs. En outre, un développement spécifique de méthodes de caractérisations optiques et mécaniques a été nécessaire pour l'étude de ces films sol-gel, à la fois minces et fragiles.

Download or read book Thermodynamic Modeling and Materials Data Engineering written by J.-P. Caliste and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: J.-P. CALISTE, A. TRUYOL AND J. WESTBROOK The Series, "Data and Knowledge in a Changing World", exemplifies CODATA's primary purpose of collecting, from widely different fields, a wealth of information on efficient exploitation of data for progress in science and technology and making that information available to scientists and engineers. A separate and complementary CODATA Reference Series will present Directories of compiled and evaluated data and Glossaries of data-related terms. The present book "Thermodynamic Modeling and Materials Data Engineering" discusses thermodynamic, structural, systemic and heuristic approaches to the modeling of complex materials behavior in condensed phases, both fluids and solids, in order to evaluate their potential applications. Itwas inspired by the Symposium on "Materials and Structural Properties" held during the 14th International CODATA Conference in Chambery, France. The quality of the contributions to this Symposium motivated us to present" a coherent book of interest to the field. Updated contributions inspired by Symposium discussions and selections from other CODATA workshops concerning material properties data and Computer Aided Design combine to highlight the complexity of material data issues on experimental, theoretical and simulation levels Articles were selected for their pertinence in three areas. Complex data leading to interesting developments and tools such as: • new developments in state equations and their applications, • prediction and validation of physical and energy data by group correlations for pure compounds, • modeling and prediction of mixture properties.

Download or read book Ceramic Materials written by Philippe Boch and published by John Wiley & Sons. This book was released on 2010-01-05 with total page 593 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is primarily an introduction to the vast family of ceramic materials. The first part is devoted to the basics of ceramics and processes: raw materials, powders synthesis, shaping and sintering. It discusses traditional ceramics as well as “technical” ceramics – both oxide and non-oxide – which have multiple developments. The second part focuses on properties and applications, and discusses both structural and functional ceramics, including bioceramics. The fields of abrasion, cutting and tribology illustrate the importance of mechanical properties. It also deals with the questions/answers of a ceramicist regarding electronuclear technology. As chemistry is an essential discipline for ceramicists, the book shows, in particular, what soft chemistry can contribute as a result of sol-gel methods.

Download or read book Laser Induced Damage in Optical Materials written by and published by . This book was released on 1996 with total page 888 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Science and Technology of Polymers and Advanced Materials written by Paras N. Prasad and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 859 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book summarizes the state ofthe art research presented at the Fourth International Conference on Frontiers of Polymersand Advanced Materialsheld in Cairo, Egypt in January 4-9, 1997. This conference follows the successful conferences held in Kuala Lumpur, Malaysia in 1995, in Jakarta, Indonesia in 1993 andin New Delhi, India in 1991. These conferences focussed on the most recent and important advances in a wide range of carefully chosen subject areas dealing with advanced materials, their science and technology and new business opportunities resulting from recent technological advances. As its predecessors, the conference held in Cairo was truly international with strong participation of 488 deiegales representing 37 countries from the USA and Egypt, as weil as Europe, South East Asia, Japan, South Africa and the Middle East. The conference was organized by the Egyptian Academy of Scientific Research and Technology, The Arab Society ofMaterials Science and the State University ofNew Y ork at Butfalo. The stated goals ofthe conference were: • To highlight advances and new. findings in the general area of polymers and advanced materials. - • T o foster global collaboration between the USA, Egypt and other nations in the general field of polymers and advanced materials. • To promote the development of scientific ilifrastructure in this field among the different participating countries, especially in the Middle East. • To create a basisforfuture long-term scientific exchanges between the USA and Egypt, and/or other countries.

Download or read book Thin Film Optical Filters written by H. Angus MacLeod and published by CRC Press. This book was released on 2010-03-16 with total page 810 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by a world-renowned authority of optical coatings, Thin-Film Optical Filters, Fourth Edition presents an introduction to thin-film optical filters for both manufacturers and users. The preeminent author covers an assortment of design, manufacture, performance, and application topics. He also includes enough of the basic mathematics of optical thin films to enable readers to carry out thin-film calculations. This new edition of a bestseller retains most of the descriptions of older design techniques because of their importance in understanding how designs work. However, this edition includes a substantial amount of new material as well. A new chapter on color takes into account the increasing importance of color in optical coatings. In addition, a new section discusses the effects of gain in optical coatings. This comprehensive yet accessible book continues to offer valuable insight into the principles, techniques, and processes of successful coating design. It provides the sound foundation required to make further advances in the field.

Download or read book Laser induced Damage in Optical Materials 1996 written by Harold Earl Bennett and published by SPIE-International Society for Optical Engineering. This book was released on 1997 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sustainable Energy Water Environment Nexus in Deserts written by Essam Heggy and published by Springer Nature. This book was released on 2022-04-25 with total page 811 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses challenges and opportunities in the Energy-Water-Environment (EWE) nexus, with a particular focus on research and technology development requirements in harsh desert climates. Its chapters include selected contributions presented during the 1st international conference on sustainable Energy-Water-Environment nexus in desert climates (ICSEWEN-19) held at the Qatar Environment and Energy Research Institute (QEERI) in Doha, Qatar in December 2019. This volume is comprised of three main chapters, each describing important case studies and progress on water, energy and environmental questions. A fourth chapter on policies and community outreach on these three areas is also included. This compilation aims to bridge the gap between research and industry to address the socioeconomic impacts of the nexus imbalance as perceived by scientists, industrial partners, and policymakers. The content of this book is of particular importance to graduate students, researchers and decision makers interested in understanding water, energy and environmental challenges in arid areas. Re searchers in environmental and civil engineering, chemistry, hydrology and environmental science can also find unique in-situ observations of the current nexus imbalance in deserts climate to validate their investigations. It is also an invaluable guide for industry professionals working in water, energy, environment and food sectors to understand the rapidly evolving landscape of the EWE nexus in arid areas. The analyses, observations and lessons-learned summarized herein are applicable to other arid areas outside North Africa and the Arabian Peninsula as well, such as central Australia, the southwest of the United States and deserts in central Asia.

Download or read book ETUDE DE L ELABORATION PAR VOIE SOL GEL DE STRUCTURES GUIDANTES SIO 2 SI POUR APPLICATIONS EN OPTIQUE INTEGREE written by STEPHANE.. BRUYNOOGHE and published by . This book was released on 1997 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: CE TRAVAIL TRAITE DE L'ELABORATION DE STRUCTURES GUIDANTES SIO#2/SI A L'AIDE DU PROCEDE SOL-GEL POUR DES APPLICATIONS EN OPTIQUE INTEGREE. LA METHODOLOGIE UTILISEE CONSISTE EN UN SUIVI SYSTEMATIQUE DE L'INFLUENCE DES CONDITIONS OPERATOIRES D'ELABORATION SUR LE COMPORTEMENT STRUCTURAL ET OPTIQUE DES MATERIAUX SOL-GEL, L'OBJECTIF ETANT L'OPTIMISATION DE LEURS PERFORMANCES. L'ANALYSE BIBLIOGRAPHIQUE NOUS A PERMIS DE METTRE EN EVIDENCE L'INTERET DE LA TECHNOLOGIE SOL-GEL POUR LE DEPOT DE FILMS MINCES. NEANMOINS, PAR CETTE TECHNOLOGIE, L'ELABORATION DE COUCHES D'EPAISSEUR MICROMETRIQUE INDISPENSABLES A LA FABRICATION DES GUIDES D'ONDE, EST DELICATE EN RAISON DE L'APPARITION DE MICROFISSURES. EN PREMIER LIEU, NOUS AVONS SOULIGNE L'IMPORTANCE D'UN CHOIX JUDICIEUX DES PARAMETRES D'ORDRE CHIMIQUE DES SOLUTIONS LIQUIDES DE DEPART ET AVONS CONCENTRE NOS EFFORTS SUR L'OBTENTION DE COUCHES MINCES OPTIQUEMENT GUIDANTES. LES NOMBREUSES TECHNIQUES DE CARACTERISATION EMPLOYEES ONT MONTRE LE LIEN ETROIT ENTRE LA MICROSTRUCTURE ET LES PROPRIETES OPTIQUES DE NOS DEPOTS SOL-GEL. EN SECOND LIEU, LA COMPREHENSION ET LA MAITRISE DES PHENOMENES DE CONTRAINTES GENEREES AU SEIN DES FILMS MINCES NOUS ONT PERMIS DE REALISER DES COUCHES D'EPAISSEUR SUPERIEURE AU MICRON PAR MULTIDEPOT. LES GUIDES D'ONDE PLANAIRES AINSI REALISES REVELENT DES PERTES OPTIQUES DE PROPAGATION INFERIEURES A 0,2 DB/CM DANS LA GAMME DE LONGUEUR D'ONDE COMPRISE ENTRE 1,2 ET 1,7 M. EN GRAVANT CES GUIDES, NOUS AVONS OBTENU DES GUIDES DE LARGEUR LIMITEE DONT LES PERTES DE PROPAGATION S'ELEVENT A 0,77 DB/CM A LA LONGUEUR D'ONDE DE 1,3 M. ENFIN, NOUS AVONS PRESENTE UNE EVALUATION DU PROCEDE SOL-GEL POUR LA REALISATION DE DISPOSITIFS AMPLIFICATEURS EN OPTIQUE INTEGREE. LES RESULTATS OBTENUS SUR LES FILMS MINCES SONT TRES PROMETTEURS QUANT A L'ELABORATION DE STRUCTURES GUIDANTES AMPLIFICATRICES.

Download or read book Caracterisation des couches minces optiques amelioration des modeles de couches written by Patrick Chaton and published by . This book was released on 1991 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Linear Nonlinear and Power limiting Organics written by Manfred Eich and published by SPIE-International Society for Optical Engineering. This book was released on 2000 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Chromium Doped TiO2 Sputtered Thin Films written by Anouar Hajjaji and published by Springer. This book was released on 2014-12-24 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents co-sputtered processes ways to produce chrome doped TiO2 thin films onto various substrates such as quartz, silicon and porous silicon. Emphasis is given on the link between the experimental preparation and physical characterization in terms of Cr content. Moreover, the structural, optical and optoelectronic investigations are emphasized throughout. The book explores the potencial applications of devices based on Cr doped TiO2 thin films as gas sensors and in photocatalysis and in the photovoltaic industry. Also, this book provides extensive leads into research literature, and each chapter contains details which aim to develop awareness of the subject and the methods used. The content presented here will be useful for graduate students as well as researchers in materials science, physics, chemistry and engineering.

Download or read book Spectrally Selective Surfaces for Heating and Cooling Applications written by Claes G. Granqvist and published by SPIE Press. This book was released on 1989 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Tutorial Text covers coatings and surface treatments for energy-efficient windows of many different kinds, for solar collectors, and for radiative coolers. The desired spectral properties of these surfaces are introduced through a discussion of the radiation that prevails in our natural ambience. Emphasized are materials options, coating techniques, experimental data on optical properties, theoretical models for pertinent materials, and optimization studies with regard to practical applications. The book should be of interest to people working R&D in industry, universities, and national and international institutions who are engaged in issues related to energy efficiency and solar energy utilization.