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How Trustworthy Is The Apple Watch’s Blood Oxygen Sensor?

1 of the essential challenges is to boost the efficiency of the oxygen reactions (i.e. oxygen reduction reaction and oxygen evolution reaction ) at the air electrode if aiming to facilitate the secondary Zn–air batteries’ commercialization. To this, productive electrocatalyst can be employed to increase reaction rate and thus the efficiency. Presently, oxygen electrodes with bifunctional catalysts are nicely reported in the literature8,9,10. This 6-inch-by-six-inch benchtop reaction chamber has been developed by LLNL scientists Mark Burton, Jonathan Crowhurst and David Weisz to study the chemistry of laser-ablated metals. Particulates are formed as the laser ablation plasma cools, enabling the team...