Structural Colors: Self-Assembled Coffee-Ring Colloidal Crystals for Structurally Colored Contact Lenses (Small 8/2015)

On page 926, Z. Y. Xie, Z. Z. Gu, and co-workers demonstrate the fabrication of structurally colored circular contact lenses from colloidal crystal templates. The structurally colored circular contact lenses display variable brilliant color under light illumination, without requiring the addition of any colorants to the hydrogel lenses, hence preventing the potential hazards from traditionally colored contact lenses.