“Frequency combs” are optimally suited for chemical sensors. A revolutionary technology developed at TU Wien (Vienna) now produces these laser frequencies in a much easier and more robust way. Most lasers have only one color.  All the photons it emits have exactly the same wavelength. However, there are also lasers whose light is more complicated.…

Atomically thin crystals will play an ever greater role in future — but how can their crystallization process be controlled? A new method is now opening up new possibilities. They are among the thinnest structures on earth: “two dimensional materials” are crystals which consist of only one or a few layers of atoms. They often…