Researchers have developed a terahertz (THz) transmitter capable of transmitting digital data at a rate 10 times or more faster than that offered by the fifth-generation mobile networks (5G) expected to appear around 2020. The terahertz transmitter could make it possible for the whole content on a DVD (digital versatile disk) to be transferred in a fraction of a second, according to the research scheduled to be presented at the International Solid-State Circuits Conference (ISSCC) ..