From the Abstract:
The piezoelectric generation of perovskite BaTiO3 (Barium Titanium Oxide, or Barium Titanate) thin films on a flexible substrate has been applied to convert mechanical energy to electrical energy for the first time. Ferroelectric BaTiO3 thin films were deposited by radio frequency magnetron sputtering on a Pt/Ti/SiO2/(100) Si substrate (Platinum/Titanium/Silicon Dioxide, lattice orientation 1-0-0) and poled under an electric field of 100 kV/cm. The metal−insulator (BaTiO3)−metal-structured ribbons were successfully transferred onto a flexible substrate and connected by interdigitated electrodes. When periodically deformed by a bending stage, a flexible BaTiO3 nanogenerator can generate an output voltage of up to 1.0 V. The fabricated nanogenerator produced an output current density of 0.19 μA/cm2 and a power density of 7 mW/cm3. The results show that a nanogenerator can be used to power flexible displays by means of mechanical agitations for future touchable display technologies.
The "nutshell": that static charge you generate by simply moving to get out of your car: that movement could one day actually generate...power!
Link: Nanogenerator Takes Us One Step Closer to Power-Generating Clothing.
#physics, #coolphysics: "The one exclusive sign of thorough knowledge is the power of teaching." Aristotle
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