Body sensors are becoming more common, from external fitness trackers that monitor blood flow, motion, temperature, heart rate to biohacked devices embedded under the skin that send text messages when something is awry.
A team of researchers is working on injectable and embeddable sensors made from carbon nanotubes that can be programmed to monitor health conditions as well as environmental changes and can stay in a person's body for up to a year.
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The devices could keep check on a range of bodily functions, such as blood sugar levels and inflammation, as well as alert a person if external air quality has been compromised by pollution, dangerous gases or even poison.
The nanotube sensors were invented by MIT chemical engineering researcher Nicole Iverson. She and her team demonstrated the sensor in mice and published the results in Nature Nanotechnology
Nanotubes are a great choice for these sensors because they can be designed to glow under infrared light when they come into contact with certain chemicals.