Better bundled: New principle for generating x-rays

X-rays are usually difficult to direct and guide. X-ray physicists have developed a new method with which the X-rays can be emitted more precisely in one direction. To do this, the scientists use a structure of thin layers of materials with different densities of electrons to simultaneously deflect and focus the generated beams.

source https://www.sciencedaily.com/releases/2021/01/210125144532.htm