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IIT Kharagpur generates electricity from Eggshells

IIT Kharagpur generates electricity from Eggshells

Scientists at IIT Kharagpur, have found an interesting way to use eggshell proteins to develop tiny devices that can harvest electricity from body movements, reports Business Standard. These could power wearable sensors and devices in the future.

Bhanu Bhusan Khatua, a professor at IIT Kharagpur, in West Bengal, told PTI over the phone, that bio-based green energy is still to be effectively explored, so the energy demand of contemporary humankind can be fulfilled.

The team isolated the soft membrane present inside eggshells, and coated it on both sides with thin copper tapes, attaching gold electrodes to them. The arrangement was then encapsulated in a silicon-based organic polymer. Assembling 5 of these devices can power over 90 green LED’s, and according to findings, this can be commercialised.

Ultra-sensitive towards any minute pressure arising from the pulse, body motions at rest and walking conditions, and water drops, the device can be used to power numerous applications like fitness trackers, health monitors and sensors.

According to researchers, the device may be able to replace conventional ways of powering medical devices, in the near future. The researchers claim this work would help uplift the green energy harvesting technology, as self-powered and wearable electronics. They also said that these non-traditional biomechanical energy sources could replace batteries.

The professor sounds optimistic about using non-traditional sources to generate power and says the team is exploring other biomaterials, like natural silk, cellulose-based nano-fibres, etc., which may have higher piezoelectric coefficient and output performances, for broad application areas, including healthcare monitoring.

Reference: The Better India

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