title: Aluminum-jointed silicon dioxide octagon nanohelix array with desired complex refractive index.
abstract: In this Letter, glancing angle deposition is used to form an aluminum-jointed silicon dioxide octagon nanohelix array as a 3D nanostructured thin film. As a sculptured metal-dielectric composite, the film exhibits a complex refractive index of near unity with a small imaginary part. This structured film is demonstrated as an efficient light absorber to absorb light in a broad band and over a wide range of angles for both polarization states.
authors: Yi-Jun
authors: YJ
authors: Jen
authors: Chien-Chi
authors: CC
authors: Chen
authors: Ci-Yao
authors: CY
authors: Jheng