Manipulating terahertz guided wave excitation with Fabry-Perot cavity-assisted metasurfaces.

Metasurfaces are emerging as powerful tools for manipulating complex light fields, offering enhanced control in free space and on-chip waveguide applications. Their ability to customize refractive indices and dispersion properties opens up new possibilities in light guiding, yet their efficiency in exciting guided waves, particularly through metallic structures, is not fully explored. Here, we present a new method for exciting terahertz (THz) guided waves using Fabry-Perot (FP) cavity-assisted metasurfaces that enable spin-selective directional coupling and mode selection.

Smog, media attention, and corporate social responsibility-empirical evidence from Chinese polluting listed companies.

In recent years, the frequent occurrence of smog in Chinese cities has prompted great changes in the policy environment faced by enterprises. In this study, we address the question whether the decision-making behavior of enterprises will be affected by smog. This paper studied the 2010-2018 data of 218 listed Chinese polluting companies to investigate the impact of smog on corporate social responsibility (CSR).