Advances in Polymer-Based Piezoelectric Systems

Advances in Polymer-Based Piezoelectric Systems

Nithin Kundachira Subramani (The National Institute of Engineering, India), Shilpa K. N. (Sri Jayachamarajendra College of Engineering, India), Sachhidananda Shivanna (Sri Jayachamarajendra College of Engineering, India), Jagajeevan Raj B. M. (The National Institute of Engineering, India) and Siddaramaiah Hatna (Sri Jayachamarajendra College of Engineering, India)
Copyright: © 2018 |Pages: 19
DOI: 10.4018/978-1-5225-3023-7.ch006
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Abstract

Lately, polymer based piezoelectric materials that harness energy from mechanical vibrations and/or impact are being increasingly investigated as radical alternates to conventional batteries that are hard to service once deployed. Nevertheless, the optimization of energy outputs of piezoelectric energy harvesters is one of the prime challenges faced by the scientific community. This chapter provides an overview of polymer based piezoelectric energy harvesters with special emphasis on current state of research on polymer composites/nanocomposites for vibrational energy harvesting. A detailed summary of piezoelectric phenomenon in polymers is also presented. An in-depth narration detailing the enhancement of piezoelectric behavior of one of the most commonly employed piezoelectric polymer (PVDF) is presented with special emphasis on some of the promising filler materials towards realizing high efficient piezoelectric modules. This chapter is intended to give an insight on the recent advances in the field of polymer based piezoelectric materials.
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Introduction

Energy is much obligatory and the ever decreasing size of electronic gadgets coupled with augmented ask for sustainable energy have led the scientific community to design and develop self powered gadgets that do not ask for any external power, either continuous or punctuated (Atzori et al., 2010). These self powered gadgets mostly make use of ambient and harness-able energies. Piezoelectricty is one such approach of energy recovery that essentially involves vibration-to- electricity energy conversion (Henry, 2004) via buttressing of electrical charges under applied stress. The most distinguished characteristic of this kind of mechanical energy harvesting was initially identified for low frequency power generation applications. Therefore, one of the prominent targeted applications of vibration to electricity energy conversion is to power micro-electronic devices.Nevertheless, vibrational-to-electrical energy conversion involves one of the three thriving mechanisms of energy transduction namely; electrostatic, electromagnetic and piezoelectric (Williams & Rob 1996). All of which have been thoroughly investigated over the last few decades. If the vibrational force is converted electrical energy via electric filed, then the transduction is electrostatic, if magnetic field is the transduction medium, then electromagnetic and if strain is involved, then it is termed piezoelectric.

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