David Sayre及其合作者首次得到了非晶样品的衍射图。他们的革命性的功绩在于能得到不可能结晶的大量物质的衍射图 ,这些非晶体可以是从细胞到个别蛋白质分子的任何材料 ,并且可得到超高分辨率衍射图。他们首次得到的是一批微小的金粉的衍射图 ,分辩率为 75nm,虽然这比不上晶体 For the first time, David Sayre and his collaborators obtained diffraction patterns of amorphous samples. Their revolutionary merit lies in the ability to obtain diffractograms of a large number of substances that are impossible to crystallize, which can be anything from cells to individual protein molecules and yield ultra-high resolution diffraction patterns. What they got for the first time was a series of diffraction patterns of tiny powders with a resolution of 75 nm, although this is not as good as a crystal