  The manipulation of visible light is important in science and technology
research. Metasurfaces can enable flexible and effective regulation of the
phase, polarization, and propagation modes of an electromagnetic wave.
Metasurfaces have become a research hotspot in optics and electromagnetics, and
cross-polarization conversion is an important application for visible-light
manipulation using a metasurface. A metasurface composed of nano-antenna arrays
and bilayer plasma can reportedly convert the direction of linear polarized
light efficiently. However, the metasurface of cross-polarization conversion
operating in short-wavelength visible light is problematic. In addition,
previous metasurfaces prepared using the top-down etching method is unsuitable
for practical applications because of the necessary harsh experimental
conditions and the high construction cost of preparation. In the present work,
we suggest a dendritic cell-cluster metasurface achieve cross-polarization in
transmission mode within 550, 570, 590 and 610 nm wavelength. Preparation is
accomplished using a bottom-up electrochemical deposition method, which is easy
and low cost. The dendritic cell-cluster metasurface is an important step in
cross-polarization conversion research and has broad application prospects and
development potential.
