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Although the idea that entropy alone is suucient to produce an ordered state is an old one in colloidal science 11, the notion remains counter-intuitive and it is often assumed that attractive i n teractions are necessary to generate phases with long-range order. The phase behaviour for both rods and spheres has been studied experimentally 1, 5, 6, 7, 8, 9,(More)
We present an experimental study of the isotropic-nematic phase transition in an aqueous mixture of charged semiflexible rods ( fd virus) and neutral polymer (Dextran). A complete phase diagram is measured as a function of ionic strength and polymer molecular weight. At high ionic strength we find that adding polymer widens the isotropic-nematic coexistence(More)
Methionine is an important nutrient in animal feed and several approaches have been developed to increase methionine concentration in maize (Zea mays L.) grain. One approach is through traditional breeding using recurrent selection. Using divergent selection, genetically related populations with extreme differences in grain methionine content were produced.(More)
Liquid crystalline phase transitions in virus and virus/polymer suspensions A dissertation presented to the Using experimental, theoretical, and simulation methods, we investigate the relationship between the colloidal intermolecular interactions and the resulting phase diagrams. As a model system of rod-like particles we use bacteriophage fd, which is a(More)
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