Our modern information society is highly dependent on secure communication channels. The idea of encryption is to hide the original message by applying complex mathematical routines on it, which are almost impossible to revert unless the underlying key is known. Quantum key distribution (QKD) offers...
When characterizing hazardous materials such as toxic liquids, the less material you need for investigation, the better. This especially applies for harsh and extreme measurement conditions like high pressure or increased temperature. As described in their recent publication “Extreme thermodynamics ...
The research focus of Sebastian-Paul Kopp is laser-based 3D printing from polymer powders. As described earlier, he uses a technique similar to a common laser printer to individually deposit the powder onto the laser bed.
In his subsequent work, he successfully adapted his setup to 3D-print custo...
In several recent publications, Lisa Ackermann reported her progress on laser beam shaping using spatial light modulators (SLMs). Now she adds another interesting piece of work as she was able to change the color of the shaped light in situ. In her publication “Polarization‑controlled nonlinear comp...
Not all metal is the same. Copper is known to be an excellent heat conductor, but on the other side a very soft and ductile material. Its strength and hardness is far away from the one of steel, which is an alloy of iron and carbon. However, the thermal conductivity of steel is more than an order of...
Last year, Sebastian-Paul Kopp introduced a new technique for powder deposition in laser-based additive manufacturing of polymer structures. He transferred charged polymer particles to the build platform using a locally charged photoconductive plate. This enables high powder efficiency and the print...
Last year, Markus Labus and Peter Lang published on their new setup for optical temperature measurements in flames and aerosols.
They continued their efforts and now were able to demonstrate calibration-free imaging of temperature fields in flames containing indium particles. The fluorescent ligh...
Last year, Lisa Ackermann already published on beam shaping of high-energy lasers for materials processing by using spatial light modulators (SLMs). As she pointed out, a drawback is the presence of speckle noise, which overlays the shaped intensity structure and drastically reduces the beam quality...
A timeframe of 80 picoseconds is extremely short. In this interval, light rays – able to travel from the earth to the moon in about one second – go a distance of 2.5 millimeters only. In a joint project of Caltech, Gothenburg University, and FAU, Yogeshwar Nath Mishra and Florian Bauer now realized ...
As previously described, liquid organic hydrogen carrier (LOHC) fluids may play a major role in future energy storing, as they are able to reversibly store and release hydrogen molecules. This release, namely the dehydrogenation of the LOHC, is an endothermic reaction, which means it requires extern...
