Advances in Polymer-Based Piezoelectric Systems

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.

Investigation of the Early Healing Response to Dicationic Imidazolium-Based Ionic Liquids: A Biocompatible Coating for Titanium Implants

“…3,9 While there is an effort to mitigate both failures, late failures are difficult to treat in the clinic, and the attempts to revise these implants often result in a decreased likelihood of re-osseointegration. 10,11 By placing an emphasis on early failures, clinicians maximize preventative measures to mitigate both early and late implant loss, as all types of implant failures are often preceded by an early loss. 12,13 Early failures are often caused by several synergistic factors, such as surgical trauma, bacterial infiltration, or occlusal overload.…”

Enhanced dielectric and ferroelectric properties of surface hydroxylated Na0.5Bi0.5TiO3 (NBT)-poly(vinylidene fluoride) (PVDF) composites

“…The frequency-dependent dielectric constant of the composite films can be explained by different types of polarization mechanisms with the application of electric fields such as electronic, ionic, dipolar and interfacial polarization. 30,31 It is found that for all composites, the dielectric constant decreases in the low frequency region, and then becomes more or less constant at higher frequency regions representing dielectric dispersion of the materials. The dielectric performance at lower frequency region may be attributed to the interfacial polarization.…”