Improving self-assembly quality of colloidal crystal guided by statistical design of experiments |
Typical top-view SEM images of colloidal crystal obtained by thermal treatment: (a) 25 °C, (b) 45 °C, (c) 60 °C, (d) 80 °C. Other conditions such as the latex concentration of φ = 20 vol.%, final spin-coating speed of 3500 rpm, and spin-coating time of 30 s are the same. |