Ultra-Thin Sensor Knows How Fast Your Blood Is Pumping

​Stretchy, soft, and as thin as a temporary tattoo, this new health sensor does something no other wearable device can. Peering into your veins, it tracks the speed of your flowing blood in real time. The study appears in Science Advances. A team of engineers and medical researchers led by Chad Webb, a materials engineer at the University of Illinois in Urbana-Champaign, has just developed the first blood flow monitor...
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