Scientists develop printable water sensor

A new, versatile plastic-composite sensor can detect tiny amounts of water. The 3D printable material is cheap, flexible and non-toxic and changes its color from purple to blue in wet conditions. The researchers used DESY's X-ray light source PETRA III to understand the structural changes within the material that are triggered by water and lead to the observed color change.

from Top Technology News -- ScienceDaily https://ift.tt/2SId6Bc