摘要:
A method for making a series of nanoscale microstructures, including helical microstructures and cylindrical microstructures. This method includes the steps of: (1) forming a chiral block copolymer containing a plurality of chiral first polymer blocks and a second polymer blocks wherein the chiral first polymer blocks have a volume fraction ranging from 20 to 49%; (2) causing a phase separation in the chiral block copolymer. In a preferred embodiment, the chiral block copolymer is poly(styrene)-poly(L-lactide) (PS-PLLA) chiral block copolymer, and the copolymerization process is a living copolymerization process which includes the following steps: (a) mixing styrene with BPO and 4-OH-TEMPO to form 4-hydroxy-TEMPO-terminated polystyrene; and (2) mixing the 4-hydroxy-TEMPO-terminated polystyrene with [(η3-EDBP)Li2]2[(η3-nBu)Li(0.5Et2O)]2 and L-lactide in an organic solvent preferably CH2Cl2 to form the poly(styrene)-poly(L-lactide) chiral block copolymer. Transmission electron microscopy (TEM) and small X-ray scattering (SAXS) studies show that when the volume fraction of poly(L-lactide) is about 35-37%, nanoscale helices with a pitch of 43.8 nanometers and a diameter of 34.4 nanometers were observed.
摘要:
A cadmium tin oxide (Cd1-xSnxO) multi-layer laminate is disclosed. The laminate comprises: a substrate; and a layer of Cd1-xSnxO which is not an epitaxial structure; wherein, the composition of Sn/(Cd+Sn) is 1˜20%. The method for producing the Cd1-xSnxO multi-layer laminate is also described here. The method comprises steps of: (a) providing metal or oxide targets for sputtering films of Cd1-xSnxO; and (b) sputtering films of Cd1-xSnxO from the targets onto the substrate; wherein the composition of Sn/(Cd+Sn) is 1˜20%.
摘要翻译:公开了一种氧化镉锡(Cd 1-x Sn 2 x O)多层层压体。 层压体包括:基材; 以及不是外延结构的Cd 1-x Sn Sn x O层; 其中Sn /(Cd + Sn)的组成为1〜20%。 此处也描述了用于制备Cd 1-x S Sn x x O多层层压体的方法。 该方法包括以下步骤:(a)提供用于溅射Cd 1-x S x O O的膜的金属或氧化物靶; 和(b)将Cd 1-x Sn 2 x O O的膜从靶上溅射到衬底上; 其中Sn /(Cd + Sn)的组成为1〜20%。