title: Antireflective grassy surface on glass substrates with self-masked dry etching.
abstract: Although recently developed bio-inspired nanostructures exhibit superior optic performance, their practical applications are limited due to cost issues. We present highly transparent glasses with grassy surface fabricated with self-masked dry etch process. Simultaneously generated nanoclusters during reactive ion etch process with simple gas mixture (i.e., CF4/O2) enables lithography-free, one-step nanostructure fabrication. The resulting grassy surfaces, composed of tapered subwavelength structures, exhibit antireflective (AR) properties in 300 to 1,800-nm wavelength ranges as well as improved hydrophilicity for antifogging. Rigorous coupled-wave analysis calculation provides design guidelines for AR surface on glass substrates.
authors.affiliation: School of Information and Mechatronics, Gwangju Institute of Science and Technology, 1 Oryong-dong, Buk-gu, Gwangju 500-712, Republic of Korea. ytlee@gist.ac.kr.
authors.forename: Young Min
authors.initials: YM
authors.lastname: Song
authors.forename: Gyeong Cheol
authors.initials: GC
authors.lastname: Park
authors.forename: Eun Kyu
authors.initials: EK
authors.lastname: Kang
authors.forename: Chan Il
authors.initials: CI
authors.lastname: Yeo
authors.forename: Yong Tak
authors.initials: YT
authors.lastname: Lee