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Biomedical devices

Biomedical devices

Just beyond our fingertips

08 Jun 2017

An optical glucose sensor could replace painful finger-prick tests for millions of people with diabetes. So why hasn’t someone built one yet? Kate Bechtel explains why advances in physics, not just engineering, are needed to make such a device possible

Photo of a person's hands, backlit by a strong light, such that the outer layers of skin appear semi-translucent
Shining possibility Light reflecting off tissue can be analysed for information about its chemical content, including glucose levels, but interpreting that information is a major challenge. (CC BY ND/eyesogreen)
I am currently in the market for a smartwatch that doubles as a fitness tracker. As I perused the se

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