Transparent sapphire substrates with tunable optical properties by decorating with nanometric oxide on porous anodic aluminum oxide patterns Academic Article uri icon


  • 2018 Elsevier Ltd and Techna Group S.r.l. A method to achieve transparent sapphire substrates with tunable optical properties is proposed. After establishing a porous anodic aluminum oxide (AAO) membrane on sapphire, a thin Sn layer was deposited onto the AAO nano-patterned structure and then oxidized to tin monoxide (SnO). Typically, a thin SnO coating has two characteristic absorption peaks within the visible light region, but when deposited on the high-aspect-ratio AAO, more peaks were observed due to multiple interactions. This simple multilayered structure and its investigations exhibited a new potential application for sapphire in optical controls.

published proceedings


author list (cited authors)

  • Hun, C., Chang, C., Chen, S., Chen, C. C., Fang, A., & Kuo, Y.

citation count

  • 4

complete list of authors

  • Hun, Chien-Wan||Chang, Chuan-Chan||Chen, Shih-Hsun||Chen, Chien Chon||Fang, Alex||Kuo, Yu-Lin

publication date

  • January 2018