DARPA's aspirations include eventually 3D printing key components of the electronics While solid-state devices have mostly overcome the vacuum tubes of old, the tech has unique benefits.

Vacuum tubes disappeared from electronic products years ago. Yet there have been some lingering vacuum tube-based products in production.

Under large-signal conditions, nonlinear models are typically required. Introducing the Triode Almost 120 years ago, electronics began in earnest with the invention of the triode vacuum tube (VT).

Nothingness might not sound very useful. In fact, the opposite is the case because nothingness – in the form of a vacuum – has played a major role in the history of electronics. Until the invention of ...