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UCSD creates ink sensor for glucose
San Diego Union-Tribune

In a possible advance for diabetics, UC San Diego has created a way to measure glucose with a special ink that’s applied to the skin with an ordinary pen.

The “bio ink” causes a chemical reaction that reveals glucose levels which are then read by a small wearable sensor.

“This is a proof-of-concept step that could make it easier for diabetics to check their glucose,” said Joseph Wang, chair of UC San Diego’s Department of Nanoengineering and leader of the project.