Wearable sensor measures airborne nicotine exposure from e-cigarettes

Some studies have shown that nicotine, an addictive substance in electronic cigarettes, increases the risk of cardiovascular and respiratory disorders. But to get a full understanding of its potential health effects, a real-time nicotine monitoring device is needed. Such a device could also help vapers -- as well as non-vapers who encounter second-hand smoke -- measure their exposure. Now, researchers report that they have developed a battery-free, wearable device that could accomplish this task.

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