"Dream, Dream, Dream! Conduct these dreams into thoughts, and then transform them into action."
- Dr. A. P. J. Abdul Kalam
"Dream, Dream, Dream! Conduct these dreams into thoughts, and then transform them into action."
- Dr. A. P. J. Abdul Kalam
19 Jan 2018
Researchers in the UK have developed a simple, paper-based device that can be used to test if a water sample is contaminated, providing a low-cost way for developing countries to curb the spread of water-borne diseases.
The device consists of a microbial fuel cell (MFC), obtained by screen printing biodegradable carbon electrodes onto a single piece of paper. The MFC uses the natural biological processes of 'electric' bacteria - attached to the carbon electrodes - to generate an electric signal. A change in the electric signal occurs when these bacteria are exposed to polluted water, triggering a warning that the water is unsafe.
