A German-French team of physicists from TU Dortmund University, University of Würzburg, and Le Mans Université has succeeded in launching shear hypersound pulses with exceptionally large amplitudes in metal halide perovskites using pulsed optical excitation. This discovery was published in the journal Science Advances. Whereas the material has been of high interest for photovoltaics so far, the new results turn it into a candidate to be used for optically driven devices capable of generating and detecting sound waves at sub-terahertz frequencies, with potential applications across electronic, photonic, magnetic, and biomedical devices.

With victims numbering in the millions, malaria is an infectious disease caused by the bite of a mosquito carrying the malaria parasite. After penetrating the skin, the pathogen moves with helical trajectories. It almost always turns toward the right, as a team of physicists and malaria researchers from Heidelberg University recently discovered. Using high-resolution imaging techniques combined with computer simulations, the researchers demonstrated that the pathogen uses these right-handed helices to control its motion as it transitions from one tissue compartment to another.

Scientists at the University of Warwick and the National Research Council of Canada have achieved and measured the highest “hole mobility” ever recorded in a silicon-compatible material.

Researchers from ETH Zurich have manufactured organic light-emitting diodes (OLEDs) on a nanoscale – that’s around a hundred times smaller than a human cell. This not only enables ultra-sharp screens and microscopes, but also opens up entirely novel possibilities for wave optics applications thanks to the extremely minute pixel size.  

A novel magnetic material with an extraordinary electronic structure might allow for the production of smaller and more efficient computer chips in the future: the p-wave magnet. Researchers from Karlsruhe Institute of Technology (KIT) were involved in its development. The magnetic behavior in the interior of this material results from the way the electron spins arrange themselves – in the shape of a helix. Therefore, the electric current flowing through is deflected laterally. The results are published in the Nature journal. 

Sixty-million-year-old rock samples from deep under the ocean have revealed how huge amounts of carbon dioxide are stored for millennia in piles of lava rubble that accumulate on the seafloor.