| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 610899 | Journal of Colloid and Interface Science | 2008 | 6 Pages |
Colloidal crystals formed by two types of polystyrene particles of different sizes (94 and 141 nm) at various number ratios (94:141 nm) are studied. Experiments showed that the formation time of crystals lengthens as the number ratio of the two components approaches 1:1. The dependence of the mean interparticle distance (D0)(D0), crystal structure and alloy structure on the number ratio of the two types of particles was studied by means of Kossel diffraction technique and reflection spectra. The results showed that as the number ratio decreased, the mean interparticle distance (D0)(D0) became larger. And the colloidal crystal in binary mixtures is more preferably to form the bcc structure. This study found that binary systems form the substitutional solid solution (sss)-type alloy structure in all cases except when the number ratio of two types of particles is 5:1, which results instead in the superlattice structure.
Graphical abstractKossel pattern and reflection spectra were used to systematically study the effect of the number ratio of the two types of particles on the characteristics of binary colloidal crystals.Figure optionsDownload full-size imageDownload as PowerPoint slide
