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Biographie --- Bouligand, Georges --- Biographie
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Dans les années 1970, en plein essor de la biologie moléculaire, Yves Bouligand explore le monde animal et végétal au microscope. Il observe des figures en « arceaux » récurrentes dans des petits crabes, des chromosomes d'algues, des écailles de poissons, des parois de cellules végétales ou des os humains, et comprend leur origine commune. Ainsi établit-il un pont entre deux domaines des sciences jamais alors reliés, celui de la biologie cellulaire et celui de la physique des cristaux liquides. Suivant une démarche originale, il s'appuie sur des dessins pour formuler de nouvelles hypothèses, consolider ses démonstrations et créer un dialogue entre disciplines. Il produira plus de six cents schémas et modèles proposant des hypothèses ambitieuses dont les retombées se poursuivent encore aujourd'hui en sciences physiques, en chimie des matériaux et en médecine.Ce catalogue prolonge l'exposition de dessins extraits des archives d'Yves Bouligand conservées au Caphés, qui eut lieu dans la bibliothèque historique de l'École normale supérieure de la rue d'Ulm à Paris en décembre 2015. Il offre le plaisir d'admirer un travail exceptionnel et rend hommage à un scientifique à la fois visionnaire et artiste. [source éditeur]
Systems biology --- Drawing --- Plant morphogenesis --- Morphology (Animals) --- Liquid crystals --- Biologie systémique --- Dessin --- Plantes --- Morphologie animale --- Cristaux liquides --- Illustrations --- Exhibitions. --- Scientific applications --- Exhibitions. --- Illustrations --- Expositions --- Applications scientifiques --- Expositions --- Morphogenèse --- Bouligand, Yves --- Centre d’archives de philosophie, d’histoire et d’édition des sciences (Paris, France) --- Archives
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The United Kingdom has a proud history of liquid crystal research. Its contributions span from the formulation of the theory of nematic elasticity as it is used today, uncovered via the Leslie–Erickson theory describing the viscosity of mesophases, to the discovery of the first room-temperature nematic and the related developments in the display industry, to name just several pioneering contributions. Today, liquid crystal science in the UK is more diverse and multidisciplinary than ever, ranging from the synthesis of increasingly complex mesogenic molecules, via the physical properties of self-organised systems and composites of both the thermotropic and the lyotropic type, to a wide variety of applications outside of the traditional display sector. The field covers aspects of chemistry, physics, material sciences, chemical engineering, mathematics, biology and device engineering in an overarching effort to advance the fundamental understanding of these soft-matter materials and to promote their technological exploitation in the UK and worldwide. To this end, a large group of individuals and research groups from universities and industry in the UK are working together on a Special Issue to advance the development of this field. The achievements of these scholars can be found in publications in top-class journals and presentations at all large international conferences, in the development of new products, and in events for public engagement.
Technology: general issues --- History of engineering & technology --- Materials science --- liquid crystal --- soliton --- toron --- skyrmion --- nematic --- cholesteric --- smectic --- micro-cargo transport --- dissipative dynamics --- twist-bend phase --- liquid crystals --- molecular simulation --- molecular dynamics --- dissipative particle dynamics --- ferroelectric materials --- smectic liquid crystals --- electrocaloric effect --- ferroelectric --- birefringence --- dielectrics --- chirality --- polymer --- cholesterol --- block copolymer --- self-assembly --- polymerisation-induced self-assembly --- Hartshorne --- Bouligand --- optical textures --- developable domains --- columnar hexagonal phases --- liquid crystal dimers --- intercalated --- interdigitated --- twist-bend nematic --- twist-bend smectic --- resonant soft X-ray scattering --- topological defects --- nematic liquid crystals --- gratings --- defect dynamics --- bistability --- LCD --- ZBD --- direct laser writing --- diffraction gratings --- stretchability --- n/a
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