Vishwas N Bedekar
Middle Tennessee State University, USA
Vishwas N Bedekar received his PhD degree from University of Texas at Arlington. He has several years of experience in synthesis and characterization of piezoelectric and
magnetoelectric materials. He has also worked on carbon based nanomaterials and design and development of energy harvesting devices and systems. He is currently an
Assistant Professor in the Department of Engineering Technology at Middle Tennessee State University. He has authored over 30 publications in peer reviewed journals,
conference proceedings and conference presentations. He has authored 2 book chapters and is reviewer on 10 internationally circulated journals related to materials
The objective of this study was to design, develop and test a multimechanism energy harvesting device to harvest energy from
mechanical vibrations using two different mechanisms viz. Piezoelectric Effect and Faraday’s Law of Induction. In this study, we
have demonstrated multimodal energy harvesting using piezoelectric and electromagnetic materials, utilizing mechanical vibrations
as primary source of energy. Multimodal Energy Harvesting captures energy from two or more sources or mechanisms using “Product
Effect”. Development of new piezoelectric compositions for enhancing the energy density using conventional ceramic processing
route was followed by design and development of electromagnetic energy harvester. Fabrication of multimechanism device involved
a magnetic levitation harvester with piezoelectric bimorph sandwiched between the two permanent magnets moving inside a coil.
Multimodal energy harvesting enhances output energy of a harvester and can be utilized for many on-board sensor applications such
as harvested energy from a car’s engine vibrations can be used to supply additional energy to the wireless sensors on board, such as
temperature sensor and dashboard indicators, whose power requirements are of the order of several milliwatts (mW).