| 초록 |
The importance of thin polymer has been grown up greatly in the technological application as well as in scientific interest. In the view of technological application, polymer thin films can be very crucial role in modifying or enhancing the property of a surface by the ways, such as coatings. The final goal in thin film technology is to produce the thin film which can screen the effects of a underlying substrate and gives modified properties with a uniform high quality interface. But it is, in fact, not easy to be achieved because of the many distinguished properties of interfaces to the counter parts, bulks. For examples, when one anneals the polymer thin film at above glass transition temperature, the wave excitations are always present on the top surface and interface, so called capillary waves, which give to a wavy surface instead of a flat one. This is one of reasons to investigate fundamental physical phenomena for the advanced thin film technology. This talk will be mainly focused on molecular dynamics in polymer thin films, including capillary wave excitation, dewetting, and viscosity on liquid polymer films, polymer diffusion near interface, and structures of polymer thin films at various interfaces, the air/water interface, mixed solvents, using scattering and microscopic techniques. |
