Fig. 5: Applications of the HCEHG.
From: Enhancing hydrovoltaic power generation through heat conduction effects
a Photograph of a digital calculator driven by the HCEHG. b Real-time voltage change of commercial capacitors when charged by the d-Al2O3 HG part of the HG under sunlight. c Real-time voltage change of the thermoelectric module when index and middle fingers approach it, from 5 cm to 2.5 cm to 0 cm. d Schematic diagram of a wearable power-sensor system including the HCEHG, a flexible CNT pressure sensor and a Bluetooth device. e Real-time pulse curve detected by attaching the HG-driven sensor to the carotid artery. Inset: photograph showing the testing process and graphical display by a mobile phone.
