A simple colour change could indicate the presence of potentially hazardous hydrogen gas thanks to a new sensor developed by researchers in Germany. The micron-scale device, which uses so-called “supraparticles”
Colour-changing sensor raises a pink flag to hydrogen leaks
![1 (28) Sensor Picture for Application Page](https://ecsense.com/wp-content/uploads/2021/02/1-28-1-scaled.jpg)