Perivesical abscesses caused by Staphylococcus aureus in two children

AbstractWe present two children with abscesses located adjacent to the urinary bladder without a demonstration of intestinal pathology. The abscesses were caused by Staphylococcus aureus and were successfully treated with computerized tomography-guided drainage and antimicrobials. We would like to stress that not every abdominal abscess is secondary to bowel disease or perforation. Therefore, the organisms cultured may differ from the classic mixed gut flora. Hence, especially if there is no evidence of intestinal disease and the location is not typical for intestinal pathology (e.g., perivesical), S. aureus must be considered a potential etiologic factor

Spin-dependent optics with metasurfaces

Optical spin-Hall effect (OSHE) is a spin-dependent transportation phenomenon of light as an analogy to its counterpart in condensed matter physics. Although being predicted and observed for decades, this effect has recently attracted enormous interests due to the development of metamaterials and metasurfaces, which can provide us tailor-made control of the light-matter interaction and spin-orbit interaction. In parallel to the developments of OSHE, metasurface gives us opportunities to manipulate OSHE in achieving a stronger response, a higher efficiency, a higher resolution, or more degrees of freedom in controlling the wave front. Here, we give an overview of the OSHE based on metasurface-enabled geometric phases in different kinds of configurational spaces and their applications on spin-dependent beam steering, focusing, holograms, structured light generation, and detection. These developments mark the beginning of a new era of spin-enabled optics for future optical components