Technology

Cryo-electron microscopy is still a comparatively new method for elucidating the three-dimensional structure of biomolecules. It can help researchers resolve many open questions about light-sensitive proteins, rapidly and with high precision.

Kurt Heutschi, a senior scientist in Empa's Acoustics / Noise Control lab, explains what noise does and why we perceive sound so differently.

Radiation therapy is one of the cornerstones of cancer therapy. However, some types of tumor respond little or hardly at all to radiation. If it were possible to make tumor cells more sensitive, treatment would be more effective and gentler. Empa and ETH Zurich researchers have now succeeded in using metal oxide nanoparticles as "radiosensitizers" – and in producing them on an industrial scale.

In evolution, the development of light-sensitive proteins was a momentous step: it’s only thanks to them that we can see. The large research facilities at PSI are helping scientists unravel the last major secrets concerning these extraordinary cellular components. The researchers have another goal as well: selectively switching processes in cells on and off with the help of light receptors.

Together with teams from England and Germany, Empa researchers developed a monitoring system for aircraft components. In the future, minor damage could be detected and monitored during flight without the aircraft having to go into the hangar for maintenance. This will reduce operating costs and increase safety at the same time.