Broadband and omnidirectional, nearly zero reflective photovoltaic glass.

A novel two-step etching approach is used to modify the surface layer of photovoltaic glasses, leading to a porous surface layer with a graded refractive index, and nearly 100% transmittance over a broad range of wavelengths, from ultraviolet to near infrared.

[Research on and application of hybrid optimization algorithm in Brillouin scattering spectrum parameter extraction problem].

This paper presents a novel algorithm which blends optimize particle swarm optimization (PSO) algorithm and Levenberg-Marquardt (LM) algorithm according to the probability. This novel algorithm can be used for Pseudo-Voigt type of Brillouin scattering spectrum to improve the degree of fitting and precision of shift extraction. This algorithm uses PSO algorithm as the main frame.