This Tiny Tooth Sensor Tracks What You Eat, and It Could Help You Be Healthier
“The South Beach diet. The Atkins diet. Eating paleo. Cutting out gluten. Going vegan. The list of fad diets and health crazes goes on, yet health statistics in the US and around the world show that most people still don’t know what to eat, or when, or how much.
New research from Tufts University’s engineering school has created a product that may be able to help: a sensor worn on users’ teeth that wirelessly transmits data about food intake to a smartphone app.
In a paper published in March in the journal Advanced Materials, the Tufts team deconstructed the sensor. It’s made of a porous silk film or a hydrogel that responds to changes in pH or temperature—the active layer—sandwiched between two square-shaped gold outer panels. The sensor’s middle layer detects chemicals and nutrients, reacting to different inputs with a shift in its electrical properties. That shift causes the sensor to transmit a different spectrum and intensity of radio frequency waves back to the app…”
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interesting