An experimental analysis on spectrum absorption characteristics of
high-temperature material based on nanostructure
High-temperature metal nanostructure endows various potential
applications in optical communication, aerospace and other fields. In
this letter, periodical nanostructure with high-temperature metal is
proposed to enhance spectrum absorption. The absorption characteristics
and mechanism were investigated and analyzed in the range of 360 ∼ 760
nm wavelength based on the finite difference time domain (FDTD) method.
The results indicate that particle shape, material, and period are the
main factors affecting absorption. After optimization, the peak and
average absorption reach 68.6% and 61.32% respectively. The coupling
between surface plasmon polaritons (SPPs) and local surface plasmon
resonance (SPR) enhances the optical properties obviously. The results
have certain reference value for the application of high-temperature
metal nanostructure in special environments.