Enhanced piezoelectricity and stretchability in energy harvesting devices fabricated from buckled PZT ribbons

Yi Qi, Prashant K. Purohit, Michael C. McAlpine

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

The development of a method for integrating highly efficient energy conversion materials onto soft, biocompatible substrates could yield breakthroughs in implantable or wearable energy harvesting systems. Of particular interest are devices which can conform to irregular, curved surfaces, and operate in vital environments that may involve both flexing and stretching modes. Previous studies have shown significant advances in the integration of highly efficient piezoelectric nanocrystals on flexible and bendable substrates. Yet, such inorganic nanomaterials are mechanically incompatible with the extreme elasticity of elastomeric substrates. Here, we present a novel strategy for overcoming these limitations, by generating wavy piezoelectric ribbons on silicone rubber. Our results show that the amplitudes in the waves accommodate order-ofmagnitude increases in maximum tensile strain without fracture. Further, local probing of the buckled ribbons reveals an enhancement in the piezoelectric effect of up to 70%, thus representing the highest reported piezoelectric response on a stretchable medium. These results allow for the integration of energy conversion devices which operate in stretching mode via reversible stretching and release deformations in the wavy/buckled ribbons.

Original languageEnglish (US)
Title of host publicationMicro- and Nanotechnology Sensors, Systems, and Applications III
DOIs
StatePublished - 2011
EventMicro- and Nanotechnology Sensors, Systems, and Applications III - Orlando, FL, United States
Duration: Apr 25 2011Apr 29 2011

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8031
ISSN (Print)0277-786X

Conference

ConferenceMicro- and Nanotechnology Sensors, Systems, and Applications III
CountryUnited States
CityOrlando, FL
Period4/25/114/29/11

Keywords

  • flexoelectric effect
  • hybrid mechanics
  • piezoribbons
  • stretchable energy harvesting

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