Figure 5.

Demonstrations of the functions of ADs. a) Synchronized temperature and humidity variations measured by both an AD and a commercial system. b) Environmental light intensity measured by a phototransistor in an AD. c) Repeated strain changes measured by a CNT strain sensor in an AD in response to changes in the width of the slit where the droplet is located. d) An AD with an electrochemical sensor for glucose concentration measurement. e) The corresponding sensor signal, when a glucose sensitive droplet moves and merges with droplets along its path. f) An AD with an electrochemical sensor for AFB1 identification. g) The corresponding sensor signal when an AFB1‐specific droplet moves and merges with droplets along its path. h) A flexible heater generates heat to evaporate an underlying droplet. i) A flexible heater induces liquid/solid transition of a temperature‐sensitive hydrogel droplet. j) Demonstration of wireless power harvesting with an AD