Today, wireless communications play an increasingly important role in our daily lives. For future "freewheeling" sixth generation (6G) wireless communications, the hybrid communication systems that ...

The earliest light in the universe has been traveling across space since just after the Big Bang. Known as the cosmic microwave background, it is imperceptible to the human eye. But if scientists can ...

A multi-institutional team of optoelectronic and materials engineers in China has developed a type of metamaterial that is nearly invisible across visible light, microwave and infrared spectra. In ...