Helion is creating technology it calls "The Fusion Engine," which would use helium from engine exhaust, according to the company's website. The helium, along with deuterium fuel from seawater, would be heated to become plasma and then compressed with magnetic fields to reach fusion temperature, which is more than 100 million degrees.

Helion Energy has become quite active on twitter announcing new devices and advances.

They have made a new Turbomolecular pumps.