This work investigates the effect of mixed and pure modes on the radiation efficiency of the smartphone metal rim antenna. It is found that the pure mode has higher radiation efficiency than that of ...

Judas Priest, Lord Of The Lost and Warkings are among the best new metal songs this week. Plus, vote for your favourite!

Room-temperature solid-state sodium batteries have the remarkable potential to simultaneously achieve high safety, high energy density, and low cost. However, their current performance is far below ...