Abstract: Flat band slow light with high coupling efficiency is achieved in a simple one-dimensional grating waveguide. An ideal flat band indicating slow light with group index of 18.3 and bandwidth ...

Reinforcing steel bars (rebars) in the concrete need to be inspected to prevent the structure from collapsing. Magnetic nondestructive testing methods can inspect the rebar without the influence of ...

The downstream stainless steel market faced a supply-demand imbalance, with oversupply driving the market to continue its downward trend. During the traditional consumption off-season, end-use ...