In this paper, a one-dimensional photonic structure composed of a Fabry-Perot cavity based on semiconductor material indium antimonide (InSb) and common photonic crystals is proposed for the realization of double Fano resonance (DFaR), using the transfer matrix method. The Fabry-Perot cavity...

In recent years, electromagnetically induced absorption (EIA) has had potential application value in nonlinear optics and other fields, which attracts more and more attention. Based on the bright-dark-quasi-dark theory, an electromagnetically induced transparent (EIT) metamaterial is proposed...

This article describes how economic development has had a significant impact on the environment. County eco-environment coordinated development has contributed to regional coordinated development in China. A support vector machine (SVM) model was constructed to classify and predict coordinated...