Presidential Young Investigator Award

聚合物体系中的“表面相”具有巨大的科学和技术重要性。界面的结合(焊接性)、摩擦磨损行为和化学稳定性取决于表面相的结构和性质，但聚合物科学尚未成功地开发出一种全面的方法来表征和研究它。这项提议要求支持扩大使用离子束以及中子和X射线散射来探测表面附近聚合物物种的分布和构象，以了解如何描述和控制表面相的行为。

The "surface phase" in polymer systems is of enormous scientific and technical importance. Bonding of interfaces (weldability), friction and wear behaviour, and chemical stability depend on the structure and properties of the surface phase, but polymer science has not yet succeeded in developing a comprehensive approach to characterize and study it. This proposal requests support to expend the use of ion beams and neutron and xray scattering to probe the distribution and conformation of polymer species near surfaces so as to understand how to describe and control the behaviour of the surface phase.