| 초록 |
Two-dimensional (2D) colloidal crystals have been widely explored for use as lithographic masks for producing large-area periodic nanopatterned arrays, as master molds for fabricating 2D regular arrays, and as templates for producing nanostructured films with 2D ordered arrays of nanoholes. These applications require defect-free, robust 2D colloidal crystals. We have used the confined convective assembly method to rapidly fabricate high-quality, defect-less robust 2D PS colloidal crystals by adding water-soluble polymer (a viscoelastic material) to the PS colloidal suspension. Compared to 2D colloidal crystals grown in the absence of water-soluble polymer, the 2D colloidal crystals grown from suspensions containing such water-soluble polymer are not only of higher quality but also show enhanced physical stability because each colloidal particle is bonded to neighboring particles and to the glass substrate by the added polymer. |
