Broadband metallic absorber on a non-planar substrate.
Absorbers for visible and near-infrared light are realized by depositing a thin iron layer on arrays of cones which are replicated from a porous template. The replicated conic structure itself is of several micrometers and ineffective at antireflection, but the subsequent deposition of iron on top generates nano-meter-size columnar structures, and thus broadband absorption enhancement is achieved.
Centre for Optical and Electromagnetic Research, SCNU-ZJU Joint Research Center of Photonics, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, 510006, China.
Xianyu
X
Ao
Xuyue
X
Wang
Guanbo
G
Yin
Kangkang
K
Dang
Yali
Y
Xue
Sailing
S
He
light absorbers; nanostructure arrays; superhydrophobicity; template stripping