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Birefringence Magneto Optique Statique Et Dynamique De Colloides Magnetiques
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Book Synopsis BIREFRINGENCE MAGNETO-OPTIQUE STATIQUE ET DYNAMIQUE DE COLLOIDES MAGNETIQUES by : ERIC.. HASMONAY
Download or read book BIREFRINGENCE MAGNETO-OPTIQUE STATIQUE ET DYNAMIQUE DE COLLOIDES MAGNETIQUES written by ERIC.. HASMONAY and published by . This book was released on 1998 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: LES FERROFLUIDES SONT DES SUSPENSIONS COLLOIDALES DE NANOPARTICLES MONODOMAINES MAGNETIQUES DONT LES GRAINS, SYNTHETISES CHIMIQUEMENT, SONT CONSTITUES DE FERRITE. ILS PORTENT UN MOMENT MAGNETIQUE ET SONT BIREFRINGENTS DU FAIT D'UNE ANISOTROPIE OPTIQUE INTRINSEQUE. UNE DENSITE SUPERFICIELLE DE CHARGE PERMET DE LES DISPERSER DANS UN SOLVANT POLAIRE. L'ETAT DE STABILITE DE LA SOLUTION DEPEND DU PH. POUR UNE DENSITE SUPERFICIELLE DE CHARGE MAXIMALE, UN SOL STABLE EST OBTENU. POUR DES DENSITES DE CHARGES PLUS FAIBLES, NOUS OBSERVONS LA FORMATION D'UN GEL THIXOTROPE PUIS UNE FLOCULATION REVERSIBLE AU VOISINAGE DU POINT DE CHARGE NULLE. UN MODELE DE POTENTIEL D'INTERACTION DE PAIRES (DLVO) EXPLIQUE DANS L'ENSEMBLE LE DIAGRAMME DE PHASE DE CES SOLUTIONS EN FONCTION DU PH. NOUS REALISONS PREMIEREMENT UNE ETUDE MAGNETO-OPTIQUE STATIQUE DE SOLS STABLES QUI NOUS PERMET DE MONTRER QUE, POUR DES PARTICULES A BASE DE -FE 2O 3, LA PRESENCE D'UNE COUCHE DE SPINS DESORDONNES EN SURFACE EST A L'ORIGINE D'UNE ANISOTROPIE OPTIQUE UNIAXIALE, CONDUISANT A UNE BIREFRINGENCE POSITIVE. POUR DES GRAINS A BASE DE NIFE 2O 4, CETTE COUCHE SUPERFICIELLE A UN ROLE IMPORTANT DANS L'AIMANTATION GLOBALE DU MATERIAU. CES NANOPARTICULES SONT UTILISEES COMME SONDES RHEOLOGIQUES DE LEUR MILIEU PORTEUR. TROIS EXPERIENCES DYNAMIQUES DE BIREFRINGENCE MAGNETIQUE SONT REALISEES AVEC TROIS TYPES DE CHAMPS MAGNETIQUES : CHAMP STATIQUE MODULE TRANSVERSALEMENT, ALTERNATIF OU PULSE. SELON LA HIERARCHIE RESPECTIVE DE L'ENERGIE MAGNETIQUE, DE L'ENERGIE D'ANISOTROPIE ET DE L'ENERGIE D'AGITATION THERMIQUE DES PARTICULES, ON OBSERVE TROIS REGIMES AVEC CHACUN UN TEMPS CARACTERISTIQUE PROPRE. LE MONTAGE EN CHAMP PULSE EST AUSSI UTILISE POUR EXPLORER LES PROPRIETES DE LA PHASE GEL THIXOTROPE EN FONCTION DU TEMPS ET DU PH. DEUX EFFETS ANTAGONISTES PARTICIPENT AU PROCESSUS DE GELIFICATION, L'AUGMENTATION DE LA TAILLE DES AGGLOMERATS LIBRES DE TOURNER DANS LA SOLUTION ET LEUR PIEGEAGE PROGRESSIF SUR UN AGREGAT DE TAILLE INFINIE.
Book Synopsis PROPRIETES DE TRANSPORT DANS LES COLLOIDES MAGNETIQUES by : BROR MAGNUS.. HEEGAARD
Download or read book PROPRIETES DE TRANSPORT DANS LES COLLOIDES MAGNETIQUES written by BROR MAGNUS.. HEEGAARD and published by . This book was released on 1996 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: CE TRAVAIL CONCERNE LES PROPRIETES DE TRANSPORT DES COLLOIDES MAGNETIQUES. DEUX TYPES D'ETUDES EXPERIMENTALES ONT ETE ABORDEES: UNE EXPERIENCE DE DIFFUSION RAYLEIGH FORCEE LIEE AUX TRANSFERTS TRANSLATIONNELS DE MASSE ET DE CHALEUR DANS LE COLLOIDE, UNE MESURE DE VORTICITE QUI SONDE, DANS UN ECOULEMENT, LE MOUVEMENT DE ROTATION DES PARTICULES COLLOIDALES PAR DES METHODES OPTIQUES DE BIREFRINGENCE MAGNETIQUE. A. DIFFUSION RAYLEIGH FORCEE: LA MODULATION SPATIALE D'INTENSITE LUMINEUSE DES FRANGES D'INTERFERENCES DU DISPOSITIF DE RAYLEIGH FORCE INDUIT UNE MODULATION SPATIALE PERIODIQUE DE TEMPERATURE ET UNE MODULATION SPATIALE DE CONCENTRATION EN PARTICULES. L'ETUDE DE LA DIFFRACTION AU PREMIER ORDRE D'UN FAISCEAU LASER SONDE A PERMIS: L'EVALUATION DU COEFFICIENT SORET DU COLLOIDE, LIE AUX PROCESSUS DE THERMODIFFUSION QUI DONNENT LIEU A LA CONSTRUCTION DU RESEAU ; LA MESURE DU COEFFICIENT DE DIFFUSION DE TRANSLATION DES PARTICULES, ASSOCIE A LA RELAXATION DE CE RESEAU EN PRESENCE ET EN L'ABSENCE DE CHAMP MAGNETIQUE APPLIQUE. B. MESURE LOCALE DE VORTICITE PAR BIREFRINGENCE MAGNETO-OPTIQUE: LES NANOPARTICULES MAGNETIQUES D'UN FERROFLUIDE SONT DILUEES EN FAIBLE QUANTITE DANS UN LIQUIDE PROTEUR OU ELLES SONT STABLES AU PLAN COLLOIDAL. ON MONTRE ICI QU'IL EST POSSIBLE D'UTILISER CES PARTICULES OPTIQUEMENT ANISOTROPES COMME SONDE HYDRODYNAMIQUE LOCALE D'UN ECOULEMENT DU LIQUIDE PORTEUR. CE TRAVAIL PRESENTE UNE MESURE LOCALE DE VORTICITE PAR DETERMINATION D'UNE BIREFRINGENCE OPTIQUE INDUITE PAR UN CHAMP MAGNETIQUE APPLIQUE. L'ORIENTATION DES PARTICULES SOUS L'EFFET CONJOINT DE LA VORTICITE LOCALE ET DU CHAMP APPLIQUE EST MESUREE EN DIRECTION ET EN AMPLITUDE DANS TROIS TYPES D'EXPERIENCES EN ROTATION SOLIDE: EN CHAMP STATIQUE, EN CHAMP ALTERNATIF ET EN CHAMP PULSE
Book Synopsis Étude de l'aimantation statique et dynamique de colloïdes magnétiques by : Dominique Horn Chandesris (auteur d'une thèse de sciences.)
Download or read book Étude de l'aimantation statique et dynamique de colloïdes magnétiques written by Dominique Horn Chandesris (auteur d'une thèse de sciences.) and published by . This book was released on 1977 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific Papers of C.V. Raman by : C. V. Raman
Download or read book Scientific Papers of C.V. Raman written by C. V. Raman and published by . This book was released on 1988 with total page 674 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains 55 publications in the field of Acoustics and includes the famous landmark paper On the Mechanical Theory of Vibration of Bowed Strings--perhaps the most important contribution to the theory of violins since Helmholtz, and also the English translation of Raman's celebrated monograph, Musik instrumente und ihre Klange (Musical Instruments and Their Tones) in the Springer Encyclopaedia of Physics. The volume includes six remarkable papers on the acoustics of Indian musical instruments--the mridangam and tabla, the only percussion instruments in the world that produce harmonic vibrations, and the tanpura and veena.
Book Synopsis Microstructure of Ceramic Materials by : American Ceramic Society
Download or read book Microstructure of Ceramic Materials written by American Ceramic Society and published by . This book was released on 1964 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Liquid Crystals of One- and Two-Dimensional Order by : W. Helfrich
Download or read book Liquid Crystals of One- and Two-Dimensional Order written by W. Helfrich and published by Springer. This book was released on 2012-01-19 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: This conference on liquid crystals of one- and two-dimensional order and their applications is the third in a series of European conferences devoted mainly to smectic liquid crystals. Its purpose was to bring together people working on the frontiers of the field of liquid crystals. Ordinary nematic liquid crystals were left out in order to limit the size of the meeting. The number of registered participants still reached 148. The conference shed new light on the classification of smectic mesophases, especially through the interaction of the Halle (GDR) and Hull (England) groups. It saw lively discussions on the famous blue phase of cholesterics. There were illuminating presentations on lyotropic nematic liquid crystals, on reentrant nematics, mesomorphic polymer phases, and related subjects. Much room was given to bilayers, monolayers, and interfaces, mostly to further the use of the concepts and methods of liquid crystal physics in exploring bio membranes. Other topics were device applications of smectic and cholesteric liquid crystals and nematic polymers, both of which hold promise of techno logical breakthroughs, apart from their scientific interest.
Book Synopsis Revolution of Perovskite by : Narayanasamy Sabari Arul
Download or read book Revolution of Perovskite written by Narayanasamy Sabari Arul and published by Springer Nature. This book was released on 2020-01-03 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents advanced synthesis techniques for fabricating Perovskite materials with enhanced properties for applications such as energy storage devices, photovoltaics, electrocatalysis, electronic devices, photocatalysts, sensing, and biomedical instruments. The book attempts to fill a gap in the published literature and provide a detailed reference on Perovskite materials. This book will be of use to graduate students and academic and industrial researchers in the fields of solid-state chemistry, physics, materials science, and chemical engineering.
Book Synopsis Handbook of Surface and Colloid Chemistry by : K. S. Birdi
Download or read book Handbook of Surface and Colloid Chemistry written by K. S. Birdi and published by CRC Press. This book was released on 2015-06-25 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition of the Handbook of Surface and Colloid Chemistry informs you of significant recent developments in the field. It highlights new applications and provides revised insight on surface and colloid chemistry's growing role in industrial innovations. The contributors to each chapter are internationally recognized experts. Several chapter
Book Synopsis Molecular Diffraction of Light by : C. V. Raman
Download or read book Molecular Diffraction of Light written by C. V. Raman and published by . This book was released on 1922 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Molecular Diffraction of Light by Sir Chandrasekhara Venkata Raman, first published in 1922, is a rare manuscript, the original residing in one of the great libraries of the world. This book is a reproduction of that original, which has been scanned and cleaned by state-of-the-art publishing tools for better readability and enhanced appreciation. Restoration Editors' mission is to bring long out of print manuscripts back to life. Some smudges, annotations or unclear text may still exist, due to permanent damage to the original work. We believe the literary significance of the text justifies offering this reproduction, allowing a new generation to appreciate it.
Book Synopsis Ferrohydrodynamics by : R. E. Rosensweig
Download or read book Ferrohydrodynamics written by R. E. Rosensweig and published by Courier Corporation. This book was released on 2013-12-10 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: Clear, comprehensive treatment of behavior and dynamics of magnetic fluids explores electromagnetism and fields, magnetocaloric energy conversion, more. For graduate students and researchers in physics, engineering, and math.
Book Synopsis The Physics of Liquid Crystals by : P. G. de Gennes
Download or read book The Physics of Liquid Crystals written by P. G. de Gennes and published by Oxford University Press. This book was released on 1993 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition of the classic text incorporates the many advances in knowledge about liquid crystals that have taken place since its initial publication in 1974. Entirely new chapters describe the types and properties of liquid crystals in terms of both recently discovered phases and current insight into the nature of local order and isotropic-to-nematic transition. There is an extensive discussion of the symmetrical, macroscopic, dynamic, and defective properties of smectics and columnar phases, with emphasis on order-of-magnitude considerations, all illustrated with numerous descriptions of experimental arrangements. The final chapter is devoted to phase transitions in smectics, including the celebrated analogy between smectic A and superconductors. This new version's topicality and breadth of coverage will ensure that it remains an indispensable guide for researchers and graduate students in mechanics and engineering, and in chemical, solid state, and statistical physics.
Book Synopsis Textures of Liquid Crystals by : Ingo Dierking
Download or read book Textures of Liquid Crystals written by Ingo Dierking and published by John Wiley & Sons. This book was released on 2006-03-06 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: A unique compendium of knowledge on all aspects of the texture of liquid crystals, providing not just detailed information on texture formation and determination, but also an in-depth discussion of different characterization methods. Experts as well as graduates entering the field will find all the information they need in this handbook, while the magnitude of the color images make it valuable hands-on-reference.
Book Synopsis Particle Interactions at Very High Energies by : David Speiser
Download or read book Particle Interactions at Very High Energies written by David Speiser and published by . This book was released on 1974 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Optics and Nonlinear Optics of Liquid Crystals by : Iam-Choon Khoo
Download or read book Optics and Nonlinear Optics of Liquid Crystals written by Iam-Choon Khoo and published by World Scientific. This book was released on 1993 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a monograph/text devoted to a detailed treatment of the optical, electro-optical and nonlinear optical properties of all the mesophases of liquid crystals and related processes, phenomena and application principles. Quantitative data on material and optical parameters spanning the ultraviolet, visible, infrared as well as the microwave regimes are presented along with detailed theoretical treatments of basic liquid crystal physics, material properties and nonlinear optics.Starting with a discussion on the basic building blocks of liquid crystalline molecules, the authors proceed to present in a pedagogical manner current theories, experiments, and applications of these unique and important optical properties of liquid crystals. Numerous tables of hard-to-find liquid crystalline parameters, a self-contained chapter on general nonlinear optics, and comprehensive literature review are also included.
Book Synopsis Defects in Liquid Crystals: Computer Simulations, Theory and Experiments by : Oleg D. Lavrentovich
Download or read book Defects in Liquid Crystals: Computer Simulations, Theory and Experiments written by Oleg D. Lavrentovich and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: Topological defects are the subject of intensive studies in many different branches of physics ranging from cosmology to liquid crystals and from elementary particles to colloids and biological systems. Liquid crystals are fascinating materials which present a great variety of these mathematical objects and can therefore be considered as an extremely useful laboratory for topological defects. This book is the first attempt to present together complementary approaches to the investigations of topological defects in liquid crystals using theory, experiments and computer simulations.
Book Synopsis Fundamentals of Liquid Crystal Devices by : Deng-Ke Yang
Download or read book Fundamentals of Liquid Crystal Devices written by Deng-Ke Yang and published by John Wiley & Sons. This book was released on 2014-12-03 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt: Liquid Crystal Devices are crucial and ubiquitous components of an ever-increasing number of technologies. They are used in everything from cellular phones, eBook readers, GPS devices, computer monitors and automotive displays to projectors and TVs, to name but a few. This second edition continues to serve as an introductory guide to the fundamental properties of liquid crystals and their technical application, while explicating the recent advancements within LCD technology. This edition includes important new chapters on blue-phase display technology, advancements in LCD research significantly contributed to by the authors themselves. This title is of particular interest to engineers and researchers involved in display technology and graduate students involved in display technology research. Key features: Updated throughout to reflect the latest technical state-of-the-art in LCD research and development, including new chapters and material on topics such as the properties of blue-phase liquid crystal displays and 3D liquid crystal displays; Explains the link between the fundamental scientific principles behind liquid crystal technology and their application to photonic devices and displays, providing a thorough understanding of the physics, optics, electro-optics and material aspects of Liquid Crystal Devices; Revised material reflecting developments in LCD technology, including updates on optical modelling methods, transmissive LCDs and tunable liquid crystal photonic devices; Chapters conclude with detailed homework problems to further cement an understanding of the topic.
Download or read book Compact NMR written by Bernhard Blümich and published by Walter de Gruyter GmbH & Co KG. This book was released on 2014-08-22 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this book is to provide an introduction to the practical use of mobile NMR at a level as basic as the operation of a smart phone. Each description follows the same didactic pattern: introduction, basic theory, pulse sequences and parameters, beginners-level measurements, advanced-level measurements, and data processing. Nuclear Magnetic Resonance (NMR) spectroscopy is the most popular method for chemists to analyze molecular structures while Magnetic Resonance Imaging (MRI) is a non-invasive diagnostic tool for medical doctors that provides high-contrast images of biological tissue depicting the brain function and the beating heart. In both applications large super-conducting magnets are employed which magnetize atomic nuclei of an object positioned inside the magnet. Their circulating motion is interrogated by radio-frequency waves. Depending on the operating mode, the frequency spectrum provides the chemist with molecular information, the medical doctor with anatomic images, while the materials scientist is interested in NMR relaxation parameters, which scale with material properties and determine the contrast in magnetic resonance images. Recent advances in magnet technology led to a variety of small permanent magnets, by which NMR spectra, images, and relaxation parameters can be measured with mobile and low-cost instruments.
