Category Physics

This three-dimensional representation of the outer surface (left) and the entire vascular system (right) of the branch-stem attachment of the dragon tree shows which tissues inside the plant are displaced in a loaded state (yellow) in comparison to an unloaded state (red). Credit: Image courtesy of Albert-Ludwigs-Universität Freiburg

Using photonic integrated circuit technology, researchers made a tiny, yet fast quantum random number generator. The small chip in the middle of the picture contains two of the random number generators, which together measure 6 by 2 millimeters. For comparison, the coin is 16.25 millimeters in diameter. Credit: Daniel Bartolome & Ona Bombí, ICFO

Aluminium plates which have only been sandblasted (in the background of the picture) cannot be glued successfully. The two glued plates separate again at the interface between glue and metal – this can be seen by the fact that there is no white glue residue visible on one of the two plates. The aluminium plates in the foreground of the picture were treated with the etching process “nanoscale-sculpturing” before being glued. These plates could also be separated. But the white glue particles left on both plates demonstrate that the bond between metal and glue is not broken, but rather the glue itself. Credit: Photo/Copyright: Julia Siekmann / Kiel University

Optical microcavities in which the solitons were created Credit: Qi-Fan Yang/Caltech