15 research outputs found

    New ferrofluid composites: Magnetism and optics experiments

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    International audienc

    Orientational dynamics in magnetic fluids under strong coupling of external and internal relaxations

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    PrĂ©sentation orale, prĂ©sentĂ©e par Yuri RaikherInternational audienceFor the geometry of crossed magnetic fields—one constant and one oscillating—a kinetic model for the field-induced birefringence of a ferrofluid, which allows for the internal and external magnetic relaxations in colloidal particles, is constructed. Using it to interpret the Argand diagrams, one gets an opportunity to analyze the effect of coherent relaxation: the case of exact coincidence of the diffusion rates of the particle magnetic moment

    Dynamic optical probing of the magnetic anisotropy of nickel-ferrite nanoparticles

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    also in Virtual J. of Nanoscale Sci. and TechnologyInternational audienc

    Relaxation der doppelbrechung magnetischer nanopartikel wÀhrend bindungsreaktionen

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    La présente invention concerne un nouveau procédé de détection d'analytes, en particulier de réactions de liaison à l'aide de la mesure de la relaxation de la biréfringence, ainsi que l'utilisation des composés nécessaires à l'analyse.The invention relates to a new method for detecting analytes, especially binding reactions, by means of measurement of the birefringence, and also to the use of compounds which are necessary to the analysis.Die Erfindung betrifft ein neues Verfahren zur Detektion von Analyten bzw. Bindungseaktionen mittels Messung der Doppelbrechung, sowie die Verwendung der dazu notwendigen Verbindungen in der Analytik
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