Phase behavior of colloid-polymer mixtures in two-dimensions

Phase behavior of mixtures of colloidal particles and non-adsorbing polymer chains bounded to two dimensions with various polymer-to-colloid size ratios are investigated. Mixtures are trapped at the air-water interface and pressure-area isotherms are obtained using the Langmuir-Blodgett technique. Different regions of the phase diagram are explored by changing temperature and the concentration of the colloid and the polymer. Brewster angle microcopy is then used to identify the microstructure of the formed phases.