A new smart pillowcase not only tracks sleep but is powered by head movement, providing a more accurate means of monitoring sleep cycles.
![A smart pillowcase that tracks sleep](https://www.advancedsciencenews.com/wp-content/uploads/2022/07/jp-valery-F2SrBdv9swk-unsplash.jpg)
A new smart pillowcase not only tracks sleep but is powered by head movement, providing a more accurate means of monitoring sleep cycles.
Using light-based polymerization, researchers have reduced the amount of time needed to 3D print certain medicines from minutes to seconds.