Each crystal structure consists of alternating layers of silicon dioxide and apolymer material, so that the spacing between similar layers matches the wavelength of phonons.
每个晶体结构由相间的二氧化硅层和高分子聚合材料层组成，相同材料层之间的间距与声子的波长相匹配。
2
Fiber is mostly made up of apolymer called cellulose, which is not digested because humans do not have the necessary enzymes to process it.
膳食纤维主要成分是一种叫做纤维素的聚合物。由于缺少必需的消化酶，人类无法消化纤维素。
3
Bao's group USES apolymer that selectively sorts the mixture by wrapping around semiconducting nanotubes, and not conducting nanotubes.