Download or read book Mod lisation de structure dynamique dans un champ optique written by Thomas Crouzil and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le piégeage optique se présente maintenant, depuis quelques décennies, comme une thématique majeure à l'intersection de diverses disciplines. Depuis les résultats d'Ashkin, de nombreux travaux ont été effectués dans le piégeage et le guidage d'objets physiques (particules, molécules, bactéries, etc.) de toutes tailles. Ces derniers caractériseront alors, devant la longueur d'onde, le domaine optique dans lequel nous nous placerons (Rayleigh, Mie, Optique géométrique).Notre travail porte donc sur l'étude des propriétés de chaînes linéaires périodiques de gouttelettes (huile), placées dans l'eau, et soumises à deux faisceaux laser horizontaux contra-propageants de profil gaussien. Nous démontrons qu'il est possible d'établir un ordre spatial sur un ensemble de grosses gouttes (devant la longueur d'onde) suivant une structure périodique. L'originalité d'un tel système réside dans le fait que la lumière peut alors être refocalisée par l'ensemble des gouttes espacées périodiquement. Cette périodicité peut ainsi, dans certains cas, conférer au faisceau une refocalisation périodique au sein du réseau. Cette première étude, en limite statique, nous permet ainsi de mettre en évidence les conditions de couplage des modes liés aux chaînes de gouttes. En particulier, nous caractérisons la présence de modes de Bloch où le faisceau se propage avec une périodicité équivalente à celle du réseau. Cela nous amène à remarquer que ces conditions modales sont soumises au paramètre de phase gaussien "Thêta" (phase de Gouy). Ainsi, bien que structuré à une échelle largement supérieure, nous mettons en évidence théoriquement des propriétés analogues à celle des cristaux photoniques, conférées par la périodicité des chaînes de gouttes. Ce qui nous permet, en conséquence, de démontrer l'existence de bandes interdites, nous amenant à définir un ensemble de modes guidants/nonguidants de cette chaîne. Cette étude statique est, par la suite, étendue d'un point de vue dynamique en considérant l'effet des forces optiques sur les gouttes. Nous démontrons ainsi qu'il est possible de piéger optiquement de telles gouttes sur des états d'équilibres stables. Au-delà desquels nous mettons en évidence, à travers une étude paramétrique, l'existence de modes oscillants périodiques ou pseudo-périodiques. Enfin, nous prenons en compte les phénomènes de collisions par coalescence, entraînant une réorganisation des répartitions de champs optiques qui peuvent se traduire par de nouvelles configurations de piégeage.
Download or read book The Edition XII Guide written by Edition XII and published by . This book was released on 1995 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Over 500 profiles of Postgraduate Science, Health, Computer Sciences and Engineering courses. A comprehensive reference section, with details of over 10 000 Postgraduate Science and Engineering courses. There is also practical editorial giving useful and essential advice and information"--Back cover.
Download or read book Spacecraft Structures and Mechanical Testing written by Centre national d'études spatiales (France) and published by . This book was released on 1994 with total page 1416 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Non destructive Testing written by J. M. Farley and published by Pergamon. This book was released on 1988 with total page 830 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS)* at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dis semination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volumes were handled by an international publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 38 (thesis year 1993) a total of 13,787 thesis titles from 22 Canadian and 164 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this impor tant annual reference work. While Volume 38 reports theses submitted in 1993, on occasion, certain uni versities do report theses submitted in previous years but not reported at the time.
Download or read book Mod les physiques cr ation musicale et ordinateur written by ACROE and published by Les Editions de la MSH. This book was released on 1994 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'informatique musicale a déjà une histoire. Depuis son origine, quasiment identique à celle de l'ordinateur, elle a developpé des techniques de synthèse de son, aidé à comprendre le fonctionnement de la perception, proposé des systèmes pour l'analyse et la construction de structures musicales, créé des outils pour la composition... Récemment est apparu un courant nouveau : celui de la synthèse par “modèle physique” auquel on doit de nombreuses réalisations, depuis les premiers algorithmes de simulation d'objets vibrants vers la fin des années 70, jusqu'aux circuits intégrés spécialisés bientôt disponibles, en passant par des machines étudiées pour la simulation physique en temps-réel. Essentiellement attaché à la production du phénomène sonore dans les systèmes musicaux informatiques, il annonce véritablement une mutation dans la manière même d'envisager le rôle de l'ordinateur dans le processus général de représentation et de création.
Download or read book Annales des t l communications written by and published by . This book was released on 2006-07 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book PASCAL explore written by and published by . This book was released on 1984 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Francis bibliographie g ographique internationale written by and published by . This book was released on 1991 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Masters Theses in the Pure and Applied Sciences written by Sade H Shafer and published by Springer Science & Business Media. This book was released on 1995 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cited in Sheehy, Chen, and Hurt . Volume 38 (thesis year 1993) reports a total of 13,787 thesis titles from 22 Canadian and 164 US universities. As in previous volumes, thesis titles are arranged by discipline and by university within each discipline. Any accredited university or college with a grad
Download or read book Mod les physiques cr ation musicale et ordinateur written by and published by Maison des Sciences de l'Homme. This book was released on 1994 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Duality of Technology Rethinking the Concept of Technology in Organizations written by Wanda J. Orlikowski and published by . This book was released on 2023-07-18 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Annual Index written by and published by . This book was released on 1993 with total page 1832 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Strategies in Locust Control written by S. Krall and published by Birkhäuser. This book was released on 2012-12-06 with total page 487 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the late eighties large-scale control operations were carried out to control a major desert locust upsurge in Africa. For the first time since the banning of organochlorine pesticides these operations relied mainly on non-persistent pesticides such as organophosphates and pyrethroids. The amount of pesticides sprayed and the area covered were probably the highest in the history of locust control and raised criticism with respect to efficacy, economic viability and environmental impact. As a consequence, applied research into the problem was intensified, both at the national and the international level, with the goal of finding new and environmentally sound approaches and solutions to locust and grasshopper control. Emphasis was laid on developing new control agents and techniques.
Download or read book Nitroxides written by Olivier Ouari and published by Royal Society of Chemistry. This book was released on 2021-05-13 with total page 611 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitroxides are versatile small organic molecules possessing a stabilised free radical. With their unpaired electron spin they display a unique reactivity towards various environmental factors, enabling a diverse range of applications. They have uses as synthetic tools, such as catalysts or building blocks; imaging agents and probes in biomedicine and materials science; for medicinal antioxidant applications; and in energy storage. Polynitroxides (polymers bearing pendant nitroxide sidechains) have been used in organic radical batteries, oxidation catalysts and in exchange reactions for constructing complex architectures. Chapters in this book cover the synthesis of nitroxides, EPR studies and magnetic resonance applications, physiochemical studies, and applications including in batteries, imaging and organic synthesis. With contributions from leaders in the field, Nitroxides will be of interest to graduate students and researchers across chemistry, physics, biology and materials science.
Download or read book Dynamique Non lin aire Et Le Chaos written by and published by . This book was released on 1993 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
