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Etude De La Diffusion Ionique Dans Les Verres Pour Loptique Integree
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Book Synopsis Étude de la diffusion ionique dans les verres pour l'optique intégrée by : Jérôme Hazart
Download or read book Étude de la diffusion ionique dans les verres pour l'optique intégrée written by Jérôme Hazart and published by . This book was released on 2002 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: La modélisation des processus d'échange d'ions Ag+/Na+ dans les verres alumino-boro-silicates, conduisant à une bonne simulation des procédés de fabrication des structures d'indice utilisées dans le domaine des télécommunications, se heurte actuellement à des difficultés d'ordre expérimental et théorique. En effet, les interactions entre les ions mobiles et la matrice vitreuse suivent des lois de type thermodynamique et électrique. Les paramètres caractérisant la diffusion ionique de ces ions sont nombreux et difficiles à mesurer directement. En outre, l'application d'un champ externe induit des flux ioniques inhomogènes complexes. Nous proposons ici un modèle unifié de diffusion ionique intervenant dans l'échange Ag+/Na+ dans les verres silicates, mêlant les approches thermodynamiques et les approches dites « conductives ». Ce modèle permet de rendre compte des phénomènes observés lors d'analyses structurelles du verre (EXAFS), de mesures de conductivité (« effet alcalin mixte ») et de mesure de coefficient d'interdiffusion. Les paramètres de diffusion sont donnés par une technique d'ajustement sur des profils expérimentaux RNF (Refracted Near Field) de guides d'ondes plans. La modélisation des guides optiques mono et bidimensionnels est en très bon accord avec les profils mesurés expérimentalement. Nous évaluons en outre la stabilité des procédés de fabrication de guides optiques utilisés industriellement dans le domaine des télécommunications optiques. En vue de l'élaboration de réseaux de Bragg, plusieurs méthodes numériques de calcul électromagnétique très récentes de type RCWA (Rigorous Coupled Wave Analysis) sont adaptées au cas des réseaux de Bragg à profils d'indice quelconques. Les performances ultimes de réseaux de Bragg fabriqués par échange d'ions sont évaluées et les modèles de diffusion et de diffraction sont confrontés aux réseaux réalisés. Les réseaux de Bragg sont bien modélisés par nos méthodes. Ceux-ci ont des performances comparables aux performances des réseaux de Bragg réalisés dans les fibres optiques.
Download or read book Conference Papers Index written by and published by . This book was released on 1978 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt: Monthly. Papers presented at recent meeting held all over the world by scientific, technical, engineering and medical groups. Sources are meeting programs and abstract publications, as well as questionnaires. Arranged under 17 subject sections, 7 of direct interest to the life scientist. Full programs of meetings listed under sections. Entry gives citation number, paper title, name, mailing address, and any ordering number assigned. Quarterly and annual indexes to subjects, authors, and programs (not available in monthly issues).
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.
Book Synopsis Underground Disposal of Radioactive Wastes by : International Atomic Energy Agency
Download or read book Underground Disposal of Radioactive Wastes written by International Atomic Energy Agency and published by . This book was released on 1981 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Organic Solid-State Lasers by : Sébastien Forget
Download or read book Organic Solid-State Lasers written by Sébastien Forget and published by Springer. This book was released on 2013-07-03 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic lasers are broadly tunable coherent sources, potentially compact, convenient and manufactured at low-costs. Appeared in the mid 60’s as solid-state alternatives for liquid dye lasers, they recently gained a new dimension after the demonstration of organic semiconductor lasers in the 90's. More recently, new perspectives appeared at the nanoscale, with organic polariton and surface plasmon lasers. After a brief reminder to laser physics, a first chapter exposes what makes organic solid-state organic lasers specific. The laser architectures used in organic lasers are then reviewed, with a state-of-the-art review of the performances of devices with regard to output power, threshold, lifetime, beam quality etc. A survey of the recent trends in the field is given, highlighting the latest developments with a special focus on the challenges remaining for achieving direct electrical pumping of organic semiconductor lasers. A last chapter covers the applications of organic solid-state lasers.
Book Synopsis Biodiversity and Sustainable Development by : Rabindra Nath Pati
Download or read book Biodiversity and Sustainable Development written by Rabindra Nath Pati and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Papers presented at the First Global Summit on Sustainable Development and Biodiversity, held at Raipur during 7-9 February 2009.
Book Synopsis Laser: 50 Years Of Discoveries by : Fabien Bretenaker
Download or read book Laser: 50 Years Of Discoveries written by Fabien Bretenaker and published by World Scientific. This book was released on 2014-10-27 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unique book provides an overview of the principle and applications of lasers enriched with numerous illustrations.Being over fifty years old, lasers continue to amaze us. Their performance characteristics are constantly reaching new limits, and the scope of their applications continues to expand. Yet, it took years of effort by teams of physicists to transform the fundamental notions of Einstein into the first experimental beam of laser light. And history is still going on as fundamental research is now triggered by its remarkable properties.This book addresses every aspects of laser light, from its fundamental principles to its industrial applications, at a level particularly suited for high school teachers, students, and anybody curious about science and technology.
Book Synopsis Radioactive Waste Management and Regulation by : Mason Willrich
Download or read book Radioactive Waste Management and Regulation written by Mason Willrich and published by . This book was released on 1977 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discusses the nature of post-fission radioactive waste, the operations that spent fuel goes through after it is discharged from a reactor, and the problem of waste management.
Book Synopsis Convention on Biological Diversity by : United States. Congress. Senate. Committee on Foreign Relations
Download or read book Convention on Biological Diversity written by United States. Congress. Senate. Committee on Foreign Relations and published by . This book was released on 1994 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Rethinking Boucher by : Melissa Lee Hyde
Download or read book Rethinking Boucher written by Melissa Lee Hyde and published by Getty Publications. This book was released on 2006 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Unequivocally a modern, Francois Boucher (1703-70) defined the French artistic avant-garde throughout his career. Yet the triumph of modernist aesthetics - with its focus on the self-critical, the autonomous, and the intellectually challenging - has long discouraged art historians and other viewers from taking Boucher's playful and alluring works seriously. Rethinking Boucher revisits the cultural meanings and reception of his diverse oeuvre, inviting us to revise the interpretive cliches by which we have sought to tame this artist and his epoch."--BOOK JACKET.
Book Synopsis Medieval Practices of Space by : Barbara A. Hanawalt
Download or read book Medieval Practices of Space written by Barbara A. Hanawalt and published by U of Minnesota Press. This book was released on 2000 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: The contributors to this volume cross disciplinary and theoretical boundaries to read the words, metaphors, images, signs, poetic illusions, and identities with which medieval men and women used space and place to add meaning to the world.
Book Synopsis Architectural Space in Eighteenth-Century Europe by : Meredith Martin
Download or read book Architectural Space in Eighteenth-Century Europe written by Meredith Martin and published by Routledge. This book was released on 2017-07-05 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: Architectural Space in Eighteenth-Century Europe: Constructing Identities and Interiors explores how a diverse, pan-European group of eighteenth-century patrons - among them bankers, bishops, bluestockings, and courtesans - used architectural space and décor to shape and express identity. Eighteenth-century European architects understood the client's instrumental role in giving form and meaning to architectural space. In a treatise published in 1745, the French architect Germain Boffrand determined that a visitor could "judge the character of the master for whom the house was built by the way in which it is planned, decorated and distributed." This interdisciplinary volume addresses two key interests of contemporary historians working in a range of disciplines: one, the broad question of identity formation, most notably as it relates to ideas of gender, class, and ethnicity; and two, the role played by different spatial environments in the production - not merely the reflection - of identity at defining historical and cultural moments. By combining contemporary critical analysis with a historically specific approach, the book's contributors situate ideas of space and the self within the visual and material remains of interiors in eighteenth-century Europe. In doing so, they offer compelling new insight not only into this historical period, but also into our own.
Book Synopsis Furnishing the Eighteenth Century by : Dena Goodman
Download or read book Furnishing the Eighteenth Century written by Dena Goodman and published by Taylor & Francis. This book was released on 2007 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: Publisher description
Book Synopsis The Political Economy of Virtue by : John Shovlin
Download or read book The Political Economy of Virtue written by John Shovlin and published by Cornell University Press. This book was released on 2006 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: 'The Political Economy of Virtue' offers an interpretation of political economy in the second half of the 18th century. It covers the key turning points in the development of French political economy.
Book Synopsis The Theory of the Grain of Sand by : Benoit Peeters
Download or read book The Theory of the Grain of Sand written by Benoit Peeters and published by IDW Publishing. This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gholam Mortiza Khan comes to Brüsel to sell some jewelry, but before the sale can be closed, Khan dies in an accident. Thus begins events sparking an investigation by Mary von Rathen: accumulation of sand in the apartment of Kristin Antipova; accumulation of stones in the house of Constant Abeels and Maurice who is loosing weight by the day. The events have a catastrophic effect on Brüsel and time is of the essence. Newly translated into English by Ivanka Hahnenberger and Steve Smith, and edited by Steve Smith (translator of The Leaning Girl and The Beauty) and Karen Copeland at Alaxis Press for publication by IDW.
Book Synopsis Cannibalismes disciplinaires by : Musée du quai Branly
Download or read book Cannibalismes disciplinaires written by Musée du quai Branly and published by Musée du quai Branly. This book was released on 2010 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce volume est issu du colloque "Histoire de l'art et anthropologie" qui s'est tenu du 21 au 23 juin 2007
Download or read book Jean Linden written by Nicole Ceulemans and published by . This book was released on 2006 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
