Research Projects

"Bio-integrated wearable and implantable electronics are gaining attention due to their role in improving quality of life. However, traditional battery-based systems often limit their continuous operation, creating challenges for their development. Piezoelectric energy harvesters (PEHs) are ideal candidates for achieving this goal, but the technology is still in its early stages and requires extensive research. Traditional inorganic PZT ceramic is the most commonly used material for PEHs, while poly(vinylidene fluoride) (PVDF) and its copolymers are increasingly being studied as smart piezoelectric biomaterials. India has a huge market for lead-free, flexible, self-powered, biocompatible PEHs, especially in wearable and implantable electronics and biological sensors. The current research focuses on designing and developing novel composite materials with super-piezoelectric properties and high biocompatibility. Lead-free bio-friendly piezoelectric ceramics like BTO and NKN are used as nanofillers to improve PEH performance without compromising flexibility. Novel metal doped BTO and NKN are prepared via electrospinning to create ceramic nanofibers with greater piezoelectric properties. Surface modification is also done to increase compatibility between the ceramic and polymer interface. Natural piezoelectric polymers derived from sources like silk cocoon from Antheraeamylitta (Tussar) are also used to improve biocompatibility and piezoelectric performance. This project aims to prepare ceramic nanofiber embedded PVDF-based composites as flexible and biocompatible highly efficient PEHs via electrospinning, making it a scalable method. Various piezoelectric composite materials will be developed by precise tuning to optimize performance, attracting various healthcare and energy sectors."