Issue Date: April 18, 2016
Paper sensor measures respiration rate
To diagnose conditions such as sleep apnea, doctors monitor patients’ respiration rates with devices that can be cumbersome and expensive. George M. Whitesides and coworkers at Harvard University have now developed an inexpensive, lightweight paper-based alternative (Angew. Chem. Int. Ed. 2016, DOI: 10.1002/anie.201511805).
To make the device, the researchers print graphite electrodes on paper, which they incorporate into a cloth surgical mask. When the paper absorbs water, the conductivity of . . .
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