Researchers at Tsinghua University have created a rapid, label-free method using polarized light detection to identify and ...

Photoplethysmography (PPG) is an optical sensing technique that measures blood volume changes and underpins devices ranging from hospital-grade pulse oximeters to consumer wearables that track heart ...

Scientists at the University of Oxford demonstrate an approach to interpreting how materials interact with polarized light, which could help advance biomedical imaging and material design. Their work, ...

A device produces green light while a researcher in lab gear stands in the background. This OLED device, which is held by a mechanical support, is producing circularly polarized light. Credit: ...

How to get rid of reflections in car photos using a polarizer. This video is to show you the actual process of putting together multiple frames or "layers" in photoshop to create a beautiful image. dm ...