A tiny micro-sensor can measure blood glucose level in breath or detect breast cancer in saliva.


A tiny nanosensor could provide fresh, inexpensive diagnosis and treatment methods for people suffering from a variety of diseases.

University of Florida engineers have designed and tested versions of the sensor for applications ranging from monitoring diabetics’ glucose levels via their breath to detecting possible indicators of breast cancer in saliva.

At 100 microns, or 100 millionths of a meter, the UF sensor is so small that the moisture from one breath is enough to get a pH or glucose concentration reading — in under five seconds.

The sensor can be mass produced inexpensively with technology already widely used for making chips in cell phones and other devices.

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