2-DIMENSIONAL ARRAYS FROM POLYMER SPHERES IN NANOSCALE PREPARED BY THE LANGMUIR-BLODGETT METHOD

Densely packed monolayers of latex particles with a diameter of 70 nm were obtained by means of the Langmuir-Blodgett method with a polymer colloid directly used as a subphase. Different kinds of spreading mole cules were tested to transfer the latex particle monolayer. Cospreadin g molecule monolayers were proved to be the best choice. The pH value of the subphase was a key factor in controlling the interaction betwee n the particles and the spreading molecule monolayers. The pi-A isothe rms were in good agreement with transmittance electron microscopy imag es, indicating that in the case of acidic condition, the interattracti on force was strong enough to make polymer particles form a monolayer and to pull it onto the substrate.