The touchscreen technology used in billions of smartphones and tablets could also be used as a powerful sensor, without the need for any modifications.
from Latest Science News -- ScienceDaily https://www.sciencedaily.com/releases/2021/07/210722131354.htm
from Latest Science News -- ScienceDaily https://www.sciencedaily.com/releases/2021/07/210722131354.htm
Smartphone screens effective sensors for soil or water contamination
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July 23, 2021
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