Redefining the X-ray tube

Excillum is the company behind the world’s brightest X-ray tube. The MetalJet is based on the unique metal-jet technology where the traditional solid anode of X-ray tubes is replaced with a jet of liquid metal.

The metal-jet technology was invented by our company’s founders in the year 2000. Today, we offer a growing range of the MetalJet and NanoTube X-ray sources based on our key technologies, to customers all over the world.

We are headquartered in Stockholm, Sweden, where we have R&D, engineering and production all in house. We cover the world with our own sales and service & support teams, and via a network of OEM partners and distributors.

Our story


The invention

It started already in year 2000 with the invention of the liquid-metal-jet-anode principle by Prof. Hans Hertz and Ph.D. student Oscar Hemberg. The technology was then further refined by Ph.D. students Mikael Otendal and Tomi Tuohimaa. At that time the four founders-to-be were affiliated with KTH Royal Institute of Technology in Stockholm.
photo by Debarshi Ray/Flicr

Excillum AB founded

The foundations of the metal-jet principle were now demonstrated and Excillum was founded to bring the technology to the market. With some investment capital on board, a few more engineers could be added to the team to explore and refine the technology further, focusing on developing the first product, the Excillum MetalJet D1.

First market – X-ray diffraction

The first system integration was for X-ray diffraction through a close cooperation with Bruker-AXS and by then sales started to grow, as well as the team though still small. With some further development, the next generation MetalJet, D2, was launched.
Excillum MetalJet

New product launch

A first step towards being a multiple-products company was taken with the launch of a new product, the Excillum NanoTube. The NanoTube has unparalleled possibilities for X-ray imaging with true resolution of 150 nm lines and spaces, and with the unique feature to internally measure and report the current spot size.

Ready for greatness

The team is expanding and ambition is growing. Directly and together with multiple system partners, we are reaching for new geographical markets and application segments as well as consolidating our position on the market as the brightest X-ray source supplier available for home labs.


It’s now 20 years since the invention of the liquid-metal jet anode. The technology has been further refined through the years and today there is a large number of MetalJets installed to the benefit of customers all over the world.
We also launch a new generation high-resolution X-ray tubes, the Excillum NanoTube N2 series. The NanoTube N2 enables industry-leading 150 nm resolution in geometric-magnification X-ray imaging systems, and with an imaging speed surpassing its predecessor’s, the NanoTube N1.

Excillum in numbers

X-ray sources installed
countries using our X-ray sources
partners for integration and distribution

Our customers

Working with direct customers and OEM partners, our state-of-the-art X-ray sources are installed and in operation across the world. Today, 100+ Excillum X-ray sources are proven in various applications and X-ray techniques, achieving unparalleled brightness and resolution for the home lab.

Our vision

is to be the world’s leading innovator and supplier of premium X-ray sources.

Our mission

is to enable new science, improve medicine and enhance manufacturing by continuous development of state-of-the-art X-ray sources.

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