Deepak Bharti table
When the batteries of home security sensors run out at night, the system can be left disabled. The triboelectric nanogenerator (TENG)-based sensor developed by Manas Tiwari and Deepak Bharti, on the other hand, generates its own energy. The sensor has ground garlic peel on its positive side and a polyethylene (PE) sheet on its negative side.
VAC figures
When mounted on a door frame, the opening of the door produces approximately 210 VAC of voltage and 45 µA of short-circuit current; a double-sided garlic peel layer raises these values to 400 VAC and 65 µA. In the experiments, the current was detected by a separate MCU powered by a power bank; it is noted that the generated power could also be used for low-power wireless packet transmission. The sensor kept working after being stored for six months and withstood 200 stress cycles; it appears to be very cheap to build.