Room Temperature Imprint Using Crack-Free Monolithic SiO₂-PVA Nanocomposite for Fabricating Microhole Array on Silica Glass

Figure 3

Photograph of the SiO₂-PVA nanocomposites in the Teflon container after the drying process, (a) prepared from 7 nm and (b) 30 nm silica particles from suspensions with varying pH. The samples at pH 2.3, 3.0, and 3.4 (a) were monolithic and crack-free.

(a)

(b)