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Contribution A Letude Des Transitions De Phase Dans Deux Types De Cristaux Mesogenes
Download Contribution A Letude Des Transitions De Phase Dans Deux Types De Cristaux Mesogenes full books in PDF, epub, and Kindle. Read online Contribution A Letude Des Transitions De Phase Dans Deux Types De Cristaux Mesogenes ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Contribution à l'étude des transitions de phase dans deux types de cristaux mésogènes by : Azzeddine Tazi Hemida
Download or read book Contribution à l'étude des transitions de phase dans deux types de cristaux mésogènes written by Azzeddine Tazi Hemida and published by . This book was released on 1988 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: UNE ETUDE PAR SPECTROSCOPIE IR ET RAMAN A ETE EFFECTUEE SUR DEUX TYPES DE COMPOSES MEROGENES : LES HEXA-N-ALCANOATES DE TRIPHENYLENE HATN (N = 8, 10, 12) ET LE MYRISTATE DE CA (C::(13)H::(27)COO) CA. ELLE A PERMIS D'OBTENIR DES INFORMATIONS DU NIVEAU MOLECULAIRE, NOTAMMENT SUR LES STRUCTURES ET LA DYNAMIQUE DES DIFFERENTES PARTIES DE LA MOLECULE
Book Synopsis Application de la théorie de Landau à l'étude des transitions de phases dans les cristaux liquides by : Rached Tekaïa
Download or read book Application de la théorie de Landau à l'étude des transitions de phases dans les cristaux liquides written by Rached Tekaïa and published by . This book was released on 1984 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis TRANSITION ET SEPARATION DE PHASE DANS LES SYSTEMES CRISTAUX LIQUIDES by : Yves Lansac
Download or read book TRANSITION ET SEPARATION DE PHASE DANS LES SYSTEMES CRISTAUX LIQUIDES written by Yves Lansac and published by . This book was released on 1993 with total page 239 pages. Available in PDF, EPUB and Kindle. Book excerpt: CETTE THESE CONCERNE L'ETUDE DE LA DYNAMIQUE DES TRANSITIONS ET SEPARATIONS DE PHASE DANS DES CORPS PURS CRISTAUX LIQUIDES (CHAINES DE POLYMERE SEMI-RIGIDE DE DEGRE DE POLYMERISATION N ET DE LONGUEUR DE PERSISTANCE Q OU PETITES MOLECULES) ET DES MELANGES BINAIRES DONT L'UN DES CONSTITUANTS PEUT ETRE MESOMORPHE. DANS LA PREMIERE PARTIE, NOUS DERIVONS UNE ENERGIE LIBRE TRES GENERALE, A PARTIR D'UN FORMALISME BASE SUR LES INTEGRALES FONCTIONNELLES. CETTE ENERGIE LIBRE TIENT COMPTE DE PLUS DES INHOMOGENEITES SPATIALES DU MILIEU PAR L'INTRODUCTION DE TERMES DE VARIATIONS SPATIALES DES PARAMETRES D'ORDRE DU SYSTEME, A SAVOIR LES CONCENTRATIONS VOLUMIQUES DE CHAQUE CONSTITUANT ET LES ORIENTATIONS MOYENNES DES MOLECULES DE CRISTAUX LIQUIDES PAR RAPPORT A UN DIRECTEUR FIXE, UNIQUE DANS LE MILIEU. NOUS ETUDIONS ENSUITE LES POINTS D'EQUILIBRE EN FONCTION DES PARAMETRES PERTINENTS DES DIFFERENTS SYSTEMES ENVISAGES AINSI QUE LEURS EVOLUTIONS DYNAMIQUES, GOUVERNEES PAR DES EQUATIONS AUX DERIVEES PARTIELLES NON LINEAIRES, DE TYPE CAHN-HILLIARD DANS LE CAS D'UN MELANGE NON MESOMORPHE POUR LEQUEL LE PARAMETRE D'ORDRE (CONCENTRATION) EST CONSERVATIF, DE TYPE GINZBURG-LANDAU REEL POUR UN CORPS PUR CRISTAL LIQUIDE NEMATIQUE DONT LE PARAMETRE D'ORDRE ORIENTATIONNEL MOYEN EST NON CONSERVATIF ET PAR UN COUPLAGE DE CES DEUX EQUATIONS DANS LE CAS D'UN MELANGE DONT L'UN DES COMPOSANTS EST MESOMORPHE. DU FAIT DES NON-LINEARITES PRESENTES, CES EQUATIONS SONT SIMULEES NUMERIQUEMENT A 2 D, A L'AIDE D'UN CALCULATEUR MASSIVEMENT PARALLELE (CONNECTION MACHINE CM 200 A L'INRIA SOPHIA-ANTIPOLIS). LES DIFFERENTES STRUCTURES APPARAISSANT LORS DES PROCESSUS DYNAMIQUES EN FONCTION DES PARAMETRES PERTINENTS SONT VISUALISES ET LEURS LOIS D'EVOLUTION SONT DONNEES. DANS LA DERNIERE PARTIE, NOUS ETUDIONS, TOUJOURS A L'AIDE DE SIMULATION NUMERIQUE, LA TRANSITION DE PHASE DANS DES CORPS PURS THERMOTROPES, NEMATIQUES OU CHOLESTERIQUES, EN TENANT COMPTE DES VARIATIONS SPATIALES DU DIRECTEUR. LES EQUATIONS DYNAMIQUES SONT DE TYPE GINZBURG-LANDAU POUR UN PARAMETRE D'ORDRE TENSORIEL ET NOUS VISUALISONS LA TRANSITION DE PHASE AINSI QUE LES DEFAUTS CARACTERISTIQUES DE CE TYPE DE MATERIAUX
Book Synopsis Rentrance sous pression dans les cristaux liquides by : Abdelkader Anakkar
Download or read book Rentrance sous pression dans les cristaux liquides written by Abdelkader Anakkar and published by . This book was released on 1990 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Un développement à l'ordre trois en fonction de la température et de la pression de la différence d'énergie de Gibbs entre deux phases successives est proposé pour rendre compte et prévoir les diagrammes de phase pression-température de cristaux liquides présentant des phénomènes de double rentrance. Pour l'étude expérimentale de ces comportements originaux, parmi les différentes méthodes d'analyse des transitions de phase des mésogènes sous pression, seule la méthode piézothermique convient. Elle consiste à mesurer la chaleur dégagée ou absorbée à la suite d'une variation de pression par un échantillon enfermé dans une cellule haute pression dans des conditions isothermes. Un nouveau microcalorimètre à flux thermique à couches composites, utilisant de faibles quantités de produit et fonctionnant entre -100°C et +300°C pour des pressions allant jusqu'à 7000 bars a été mis au point. Les performances du nouveau montage ont été déterminées. L'étude sur 10 mm3 d'un cristal liquide, p-octylbenzoate de p-cyanobenzoyloxyphényle, présentant une transition nématique rentrant - smectique Ad a été entreprise pour deux isothermes. Les courbes donnant le coefficient de dilatation thermique isobare en fonction de la pression montrent une nette anomalie à la transition qui diminue lorsque la température augmente. Bien que l'analyse enthalpique différentielle ne détecte pas cette transformation, les études piézothermiques montrent que cette transition n'est pas purement du second ordre, mais peut être qualifiée de très faiblement du premier ordre. La portion du diagramme de phase Pression-Température correspondant à cette transition a été déterminée.
Book Synopsis Contribution à l'étude de la dynamique moléculaire dans les phases nématique et isotrope des cristaux liquides by : Assis Farinha-Martins
Download or read book Contribution à l'étude de la dynamique moléculaire dans les phases nématique et isotrope des cristaux liquides written by Assis Farinha-Martins and published by . This book was released on 1972 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis 7e Congrès International Sur Les Cristaux Liquides, Bordeaux (France) 1-5 Juillet 1978 by : H. Gasparoux
Download or read book 7e Congrès International Sur Les Cristaux Liquides, Bordeaux (France) 1-5 Juillet 1978 written by H. Gasparoux and published by . This book was released on 1979 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Contribution à l'étude de nouvelles phases et de films auto-supportés de cristaux liquides by :
Download or read book Contribution à l'étude de nouvelles phases et de films auto-supportés de cristaux liquides written by and published by . This book was released on 2002 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Contribution à l'étude de la dynamique moléculaire dans les phases nématique et isotrope des cristaux liquides by : Assis Farinha-Martins
Download or read book Contribution à l'étude de la dynamique moléculaire dans les phases nématique et isotrope des cristaux liquides written by Assis Farinha-Martins and published by . This book was released on 1974 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Journal of Physics written by and published by . This book was released on 1987 with total page 1040 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Solid State written by André Guinier and published by . This book was released on 1989 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Updated translation from the French of a work first published in 1987, and intended as a sequel to the principal author's The structure of matter: from the blue sky to liquid crystals (1984). Intended to engage the interest of undergraduates and general readers, the book treats (in five chapters) the thermal, electrical, magnetic and mechanical properties of solids, and (in the final chapter) diffusion. Cleanly written and nicely illustrated descriptive text, with all mathematical material confined to boxes that some readers might want to omit in their entirety. (NW) Annotation copyrighted by Book News, Inc., Portland, OR
Download or read book Portugaliae physica written by and published by . This book was released on 1972 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Exposés et comunications présentés à la Ve Conférence Internationale sur les Cristaux Liquides by :
Download or read book Exposés et comunications présentés à la Ve Conférence Internationale sur les Cristaux Liquides written by and published by . This book was released on 1975 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Liquid Crystals by : Pawel Pieranski
Download or read book Liquid Crystals written by Pawel Pieranski and published by John Wiley & Sons. This book was released on 2021-08-31 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book on liquid crystals reports on the new perspectives that have been brought about by the recent expansion of frontiers and overhaul of common beliefs. First, it explores the interaction of light with mesophases, when the light or matter is endowed with topological defects. It goes on to show how electrophoresis, electro-osmosis and the swimming of flagellated bacteria are affected by the anisotropic properties of liquid crystals. It also reports on the recent progress in the understanding of thermomechanical and thermohydrodynamical effects in cholesterics and deformed nematics and refutes the common belief that these effects could explain Lehmann’s observations of the rotation of cholesteric droplets subjected to a temperature gradient. It then studies the physics of the dowser texture, which has remarkable properties. This is of particular interest in regards to nematic monopoles, which can easily be generated, set into motion and collided within it. Finally, this book deals with the spontaneous emergence of chirality in nematics made of achiral molecules, and provides a brief historical context of chirality
Book Synopsis The European Polysaccharide Network of Excellence (EPNOE) by : Patrick Navard
Download or read book The European Polysaccharide Network of Excellence (EPNOE) written by Patrick Navard and published by Springer Science & Business Media. This book was released on 2012-12-13 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an essential overview of the science of polysaccharides. It both approaches polysaccharides as a polymer class and provides detailed descriptions of most major polysaccharides (cellulose, mannan, xylan, chitin-chitosan, cyclodextrines). Owing to the multidisciplinary character of the European Polysaccharide Network of Excellence (EPNOE), the book describes all main aspects of polysaccharide science and technology (biology, enzymology, physics, chemistry, materials science and processing). Notations and concepts follow a uniform format throughout the whole work in order to create a valuable reference book on the field of polysaccharide science. Owing to the major importance of industry in the EPNOE, concrete applications are also described in detail.
Book Synopsis Transflective Liquid Crystal Displays by : Zhibing Ge
Download or read book Transflective Liquid Crystal Displays written by Zhibing Ge and published by John Wiley & Sons. This book was released on 2010-04-01 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sunlight readable transflective liquid crystal displays, used on devices from cell phones and portable media players, to GPS and even some desktop monitors, have become indispensable in our day-to-day lives. Transflective Liquid Crystal Displays is a methodical examination of this display technology, providing a useful reference to the fundamentals of the topic. Including thorough descriptions of the essential physics of transflective LCD technologies, the book also compares transflective LCD technology with alternatives, such as OLED displays, to enable display engineers to appropriately select the correct device for their particular application. Includes detailed descriptions of both pure transmissive and reflective LCDs, and the design considerations and performance of combining these into small mobile displays. Focuses on fundamental elements, such as double cell gap transflective LCDs, wide-viewing angle technology, light polarization and wide-view linear and circular polarizers, video rate display by colour sequential technologies, colour sciences and engineering, and backlights. Describes the latest LCD technologies, such as polymer-sustained surface alignment technology, and the possible trends which could be applied to transflective LCDs in the future. Its focus on the fundamentals of transflective liquid crystal displays makes this an ideal graduate text, while display engineers, scientists, developers and technicians working with this technology will also welcome this resource. The Society for Information Display (SID) is an international society, which has the aim of encouraging the development of all aspects of the field of information display. Complementary to the aims of the society, the Wiley-SID series is intended to explain the latest developments in information display technology at a professional level. The broad scope of the series addresses all facets of information displays from technical aspects through systems and prototypes to standards and ergonomics
Book Synopsis Exposés et communications présentés à Montpellier du 5 au 7 juin 1969, au Colloque sur les cristaux liquides by :
Download or read book Exposés et communications présentés à Montpellier du 5 au 7 juin 1969, au Colloque sur les cristaux liquides written by and published by . This book was released on 1969 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Structure and Properties of Liquid Crystals by : Lev M. Blinov
Download or read book Structure and Properties of Liquid Crystals written by Lev M. Blinov and published by Springer Science & Business Media. This book was released on 2010-10-26 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book by Lev M. Blinov is ideal to guide researchers from their very first encounter with liquid crystals to the level where they can perform independent experiments on liquid crystals with a thorough understanding of their behaviour also in relation to the theoretical framework. Liquid crystals can be found everywhere around us. They are used in virtually every display device, whether it is for domestic appliances of for specialized technological instruments. Their finely tunable optical properties make them suitable also for thermo-sensing and laser technologies. There are many monographs written by prominent scholars on the subject of liquid crystals. The majority of them presents the subject in great depth, sometimes focusing on a particular research aspect, and in general they require a significant level of prior knowledge. In contrast, this books aims at an audience of advanced undergraduate and graduate students in physics, chemistry and materials science. The book consists of three parts: the first part, on structure, starts from the fundamental principles underlying the structure of liquid crystals, their rich phase behaviour and the methods used to study them; the second part, on physical properties, emphasizes the influence of anisotropy on all aspects of liquid crystals behaviour; the third, focuses on electro-optics, the most important properties from the applications standpoint. This part covers only the main effects and illustrates the underlying principles in greater detail. Professor Lev M. Blinov has had a long carrier as an experimentalist. He made major contributions in the field of ferroelectric mesophases. In 1985 he received the USSR state prize for investigations of electro-optical effects in liquid crystals for spatial light modulators. In 1999 he was awarded the Frederiks medal of the Soviet Liquid Crystal Society and in 2000 he was honoured with the G. Gray silver medal of the British Liquid Crystal Society. He has held many visiting academic positions in universities and laboratories across Europe and in Japan.
