Local Atomic Structure of Non-Crystalline Solids

这一建议涉及对结构性质的研究， 准晶和可以形成准晶的金属玻璃 退火后的结构 形成条件 准晶体将从结构分析中确定 松弛发生在非晶态和随后的 转变为准晶态。 实验 将应用的技术包括微分异常X射线 散射、中子散射、能量色散X射线和 同步辐射衍射 几种金属玻璃合金 系统将被研究，显示出可能的趋势， 准晶结构形成。 江上博士有着出色的研究记录， 在宾夕法尼亚大学的学生都非常擅长表演 提出的方案。 这项研究先前得到了 NSF Grant DMR-8318816.

This proposal involves research on the nature of the structure of quasicrystals and metallic glasses that can form quasicrystalline structures upon annealing. Conditions for formation of quasicrytals will be ascertained from analysis of structural relaxation occurring in the amorphous state and subsequent transformation into the quasicrystalline state. Experimental techniques to be applied include differential anomalous X-ray scattering, neutron scattering, energy dispersive X-ray and synchrotron radiation diffraction. Several metallic glass alloy systems will be studied that show tendencies toward possible quasicrystalline structure formation. Dr. Egami has an outstanding research record and the facilities at the University of Pennsylvania are excellent for performing the proposed program. This research was previously supported by NSF Grant DMR-8318816.