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Evaporation self-assembly method to fabricate high-quality polystyrene microsphere colloid crystal
- Source :
- Acta Physica Sinica. 55:2092
- Publication Year :
- 2006
- Publisher :
- Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences, 2006.
-
Abstract
- Evaporation self-assembly method, which is used to assemble sub-micrometer polys tyrene microspheres, is presented in this paper. In this process the polystyrene microspheres are effectively assembled at the gas-liquid interface of suspensio n as moisture evaporates at fixed temperature. The scanning electron microscope shows that the three-dimensional colloidal assemblies have regular close-packed face-centered cubic structure. It was shown that the evaporation was blocked by the polystyrene colloid crystals growing at the gas-liquid interface, and the am ount of the polystyrene microspheres transferred to the colloid crystals from th e suspension in unit time increased with the area of the assemblies. High-qualit y polystyrene colloid crystals can be assembled when not changing or decreasing the phase concentration, whose changes can be controlled by adjusting the assemb ly area and the evaporation temperature.
Details
- ISSN :
- 10003290
- Volume :
- 55
- Database :
- OpenAIRE
- Journal :
- Acta Physica Sinica
- Accession number :
- edsair.doi...........fa613348727fa32670570d5d70a3b8f9