表面特性在很多材料应用中是十分重要的。表层原子的排列通常与体中的不同,它可以影响表面吸附其他物质原子的方式。美国宾夕法尼亚大学的研究人员最近已直接观测到铂表面上原子的重排方式。他们用激光束短脉冲加热表面,用场致离子显微镜观察铂样品表层原子的排列。该项研究工作要在呈尖端形的样品周围 Surface properties are very important in many materials applications. The arrangement of surface atoms is usually different from that of the body, which can affect the way the surface adsorbs atoms of other substances. Researchers at the University of Pennsylvania have recently directly observed the rearrangement of atoms on the surface of platinum. They heated the surface with a short pulse of a laser beam and observed the alignment of the atoms in the surface of the platinum sample with a field ion microscope. The research should be around the tip-shaped sample