ANSWER: It produces 14 volts on thumb print
- The nanogenerator, which was fabricated by Pune’s Indian Institute of Science Education and Research (IISER) and the National Chemical Laboratory, produced 14 volts when thumb pressure was applied.
- To demonstrate the potential of the nanogenerator to power small electronic devices, pressure equivalent to thumb pressure was continuously exerted on the nanogenerator for 20 minutes by using a vibration producing motor.
- About 28 micro watt per square cm power and 14 volt that was generated was stored in a capacitor and used for charging a mobile phone.
- Piezoelectric materials, which can generate electrical power locally through stress or flexing, are a great proposition for wearable electronics.
- The researchers electrospun a piezoelectric polymer [P(VDF-TrFE)] directly onto a flexible, conducting carbon cloth. The carbon cloth was produced by the researchers by heating a piece of cotton cloth at 800 degree C for several hours in an inert atmosphere.
- To improve the piezovoltage of the polymer fibres, the researchers coated the fibres with a stronger, inorganic ferroelectric material (BaTiO3) paste.
- The voltage of 14 volt with a current of several microamperes is the highest power output reported for wearable type of nanogenerator using conducting cloth as the electrode