Department of Physics and SEAS, Harvard University, Cambridge, Massachusetts 02138, United States.
Langmuir. 2010 Dec 21;26(24):18612-6. doi: 10.1021/la103874z. Epub 2010 Nov 18.
We introduce a new experimental approach to study the structural transitions of large numbers of nanoparticle-coated droplets as their volume is reduced. We use an emulsion system where the dispersed phase is slightly soluble in the continuous phase. By adding a fixed amount of unsaturated continuous phase, the volume of the droplets can be controllably reduced, causing them to buckle or crumple, thereby becoming nonspherical. The resultant morphologies depend both on the extent of volume reduction and the average droplet size. The buckling and crumpling behavior implies that the droplet surfaces are solid.
我们介绍了一种新的实验方法，用于研究大量纳米颗粒包覆液滴的结构转变，这些液滴的体积在减少。我们使用一种乳液体系，其中分散相在连续相中略有溶解。通过加入固定量的不饱和连续相，可以控制液滴的体积减小，使其发生弯曲或皱缩，从而变成非球形。所得的形态既取决于体积减小的程度，也取决于平均液滴尺寸。弯曲和皱缩行为表明液滴表面是固体。
