Abstract:

The Ni-P／cicada  wing composites with nano-array structure were prepared by utilizing Pomponia imperatoria wing as the substrates of electroless plating. The microstructures of the samples were characterized by scanning electron microscope (SEM) and transmission electron microscope (TEM), and the component as well as the optical property was respectively tested by X-ray photoelectron spectrometer (XPS) and UV-VIS-NIR spectrophotometer. Moreover, in order to investigate the effect of the nano-array structure on the antireflection property of the Ni-P coating, the 3D finite difference time domain (3D-FDTD) method was used to calculate the reflectance spectra of the synthesized composites based on the experimental data. Result showed that the reflectance of Ni-P／cicada  wing composites with nano-array structure was 70％ lower than that of the one without the surface structure, which was ascribed to the interaction between the nanoarray structure and the incident light. This work could provide inspirations for the  antireflective Ni-P surface structure design.

Key words: FDTD, nano-array, cicada wing, anti-reflective, electroless plating, Ni-P alloy