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Area of Science:

  • Advanced Materials Science
  • Nanotechnology
  • Polymer Science

Background:

  • Organic and inorganic hybrid structures are emerging as key materials for flexible and stretchable sensors and actuators.
  • Ceramic-doped polymers offer unique properties for advanced electronic applications.
  • Polyvinylidene fluoride (PVDF) is a well-known piezoelectric polymer.

Purpose of the Study:

  • To enhance the pressure sensitivity of polyvinylidene fluoride (PVDF) using ceramic doping.
  • To fabricate flexible and stretchable multilayered pressure sensors.
  • To investigate the effect of barium titanate (Ba-TiO3) nanoparticles on PVDF nanofibers.

Main Methods:

  • Solution casting technique for preparing uniform ceramic-polymer composites.
  • Electrospinning of nanocomposite fibers.
  • Fabrication of multilayered pressure sensors.
  • Characterization of piezoelectricity and pressure sensitivity.

Main Results:

  • Uniform tetragonal Ba-TiO3 and PVDF composites were successfully prepared.
  • Introduction of Ba-TiO3 nanoparticles into PVDF nanofibers significantly improved piezoelectricity and pressure sensitivity.
  • The developed flexible and stretchable multilayered pressure sensor exhibited high electrical sensitivity (6 mV N⁻¹).
  • The sensor's sensitivity was substantially higher than pure PVDF sensors (1.88 mV N⁻¹).

Conclusions:

  • The study demonstrates a composition-dependent approach for fabricating nanostructures for pressure sensors.
  • The developed Ba-TiO3/PVDF nanocomposite fibers show great potential for wearable devices.
  • This work advances the field of flexible and stretchable electronic sensors.