Electricity From Fish Scales, Jadavpur Varsity Shows The Way

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Kolkata: Time and again, Jadavpur University has given birth to innumerable academic accolades. From writers to journalists, from researchers to scientists, Jadavpur has given this world the brightest of stars.

Recently, a team of researchers at Jadavpur University developed a biodegradable energy harvester from raw fish scales that could in future replace pacemaker devices for the heart.

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Using this technology, one could tap it as a sustainable green energy source for the next generation self-powered implantable medical devices.

Furthermore, researchers also claimed that the source has the potential to support portable electronics with reduced e-waste elements.

Fish scales, that are usually thrown away, contain a huge amount of collagen fibres that possess a piezoelectric property, which means that an electric charge is generated in them in response to mechanical stress. They have also synthesised flexible bio-piezoelectric nanogenerator (BPNG) from this bio-waste.

“We collected bio-waste in the form of hard, raw fish scales from a fish processing market, and then used a demineralization process for making them transparent and flexible,” says Dipankar Mandal, Assistant Professor at Organic Nano-Piezoelectric Device Laboratory.

This discovery is important for reducing e-waste, and is also a promising solution for the development of by-products.

Basically, these nanogenerators collect several types of ambient mechanical energies from body movements, sound vibrations finger touch and wind flow—things that are there in abundance in a body. So much so that repeated touching the BPNG with a finger can turn on more than 50 blue LEDs.

This team works is the first recognition of such technology in the given field.  Their work can now be of some potential help in transparent electronics, biocompatible and biodegradable electronics, and edible electronics. It can also be of great help in self-powered implantable medical devices, surgeries, e-healthcare monitoring, as well as in-vitro and in vivo diagnostics, apart from its myriad uses for portable electronics.

 

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