IIT-Mandi: The officials informed that the researchers at Indian Institute of Technology, Mandi have proposed a mechanism to intensify the power output of piezoelectric materials that can be used in floor tiles or roads to generate electrical energy from humans walking or pressure of heavy vehicles respectively.
The IIT-Mandi team of researchers said that they had studied the piezoelectric materials numerically according to which there is an interconversion of electrical energy and mechanical energy and they have discovered a new method to enhance the electrical output of these materials when put under stress.
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Piezoelectric materials produce electric current when placed under mechanical stress.
The Journal Engineering report had appreciated the team’s work and had published IIT-Mandi’s Associate Professor Rajeev Kumar statement which read that Piezoelectric materials have the potential to produce electrical energy when force is applied on them and are of extreme utility.
It further read that such materials can be used in floor tiles to generate electrical energy from humans walking or can be used on road, where the pressure of vehicles can power signals and road lights, but currently the energy generated by these materials is quite low that limits their applications in real life situations.
Another Associate Professor Rahul Vaish said that they have developed a mechanism known as graded poling to intensify the power output of piezoelectric materials by over 100 times.
He said that the researchers have used several mechanisms to use multiple mechanical stresses - bending, compressive and tensile stresses at the bottom and top of the piezoelectric cantilever beams and shear stresses in the middle section in order to prominently enhance the electrical power output.
The promise of generation of higher amounts of electrical energy from mechanical motion can potentially enable applications in which smart devices can be simply powered by human motion. Other applications might comprise generating power from the soles of footwear equipped with these materials.
Kumar informed that the piezoelectric materials can do the reverse mechanism as well i.e. produce mechanical motion from electrical energy. The improvisation of mechanical-electrical energy interconversion efficiency can enable engineering applications such as reduction of noise and vibration and advanced technological applications like steering and positioning of satellite antennas in space.
He said that the researchers are extending their work further for more precise predictions of the effects of proposed poling mechanism on the mechanical properties of the material and this will also lead to offering better insights of harnessing the advantages of this mechanism in real life applications.
The team also comprises research scholars Sourav Sharma and Raj Kiran, along with the IIT-Mandi alumnus Anuruddh Kumar.
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