This video was originally recorded for the Cambridge Science Festival 2021. To learn more please find a link to our publication here:
Reference:
Sebastian Horstmann, Cassi J Henderson, Elizabeth A H Hall, Ronan Daly ‘Capacitive touchscreen sensing - a measure of electrolyte conductivity.’ Sensors and Actuators B (2021). DOI: doi.org/10.1016/j.snb.2021.130318
www.cam.ac.uk/research/news/smartphone-screens-effective-sensors-for-soil-or-water-contamination