Part of the 3D printing revolution will come when for almost any device can perform a 3D scan of an object copy and send the file to the 3D printer. The new development of Caltech puts this situation closer thanks to that, integrated into a smartphone, affordable and very small chip never allow it to become an accurate 3D scanner.
The use of solar energy for recharging electronic devices at home or abroad is not very up to date. Just some keyboards or portable chargers without much efficiency dare with it. The solar tree created by Finnish VTT could change this trend.