Current Vacuum Tube History

First Terahertz Vacuum Tube Amplifier Created

Vacuum tubes bring back visions of antique electronics, but these are not your grandparents’ TV sets or radios. DARPA-sponsored research has taken tools developed by the semiconductor and MEMS revolution & microfabrication methods and materials;and applied them to reliable, efficient vacuum tube technologies, making the first micromachined Traveling Wave Tube Amplifier.

For more, read the article here.