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Cost-effective, bio-compatible nanogenerators for harvesting electricity from vibrations

  • Integrity Education, Delhi
  • 27, Jun 2021
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  • Scientists from the Centre for Nano and Soft Matter Sciences, Bengaluru, have fabricated a simple, cost-effective, bio-compatible, transparent nanogenerator
  • It can generate electricity from vibrations all around for use in optoelectronics, self-powered devices, and other biomedical applications
  • The triboelectric nanogenerators (TENG) make use of mechanical energy in the form of vibrations present everywhere in different forms to generate electricity
  • Scientists  have designed a transparent TENG, using thermoplastic polyurethanes (TPU) along with Polyethylene terephthalate (PET) as tribo layers.

Working Mechanism

  • The energy harvesting TENG works on the principle of creation of electrostatic charges via instantaneous physical contact of two dissimilar materials followed by generation of potential difference when a mismatch is introduced between the two contacted surfaces through a mechanical force.
  • This mechanism drives the electrons to move back and forth between the conducting films coated on the back of the tribo layers.