胃酸不仅能够分解我们吃下的食物,也能控制我们体内的小型健康追踪设备。科学家发明了一种小型的可吸收伏打电池,如果将这种电池吞进腹中,它就会在胃肠道中起作用,在与胃酸接触后,释放出电力。这种电池既可以为测量心率和呼吸等关键指标的传感器提供电力,也可以为内部给药的设备提供电力。伏打电池可能会唤起高中时代实验室里的回忆:因为柠檬电池也是靠柠檬酸在两个电极之间 Stomach acid not only breaks down the food we eat, but it also controls the small health tracking devices in our body. Scientists have invented a small, rechargeable volt-ampere cell that, if swallowed into the abdomen, will function in the gastrointestinal tract and release electricity when it comes in contact with stomach acid. This battery provides both power for sensors that measure key indicators of heart rate and breathing, as well as power for internally dosed devices. Volt batteries may evoke high school memory in the laboratory: because the lemon battery is also citric acid between the two electrodes