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Eelectric Energy Harvesting Through Piezoelectric Polymers Initial Prototype Presentation

Eelectric Energy Harvesting Through Piezoelectric Polymers Initial Prototype Presentation. Don Jenket, II Kathy Li Peter Stone. Presentation Overview. Design Schematics Materials & Processing Justification Circuitry Tail Wire/Electrodes Initial Prototype Unveiling

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Eelectric Energy Harvesting Through Piezoelectric Polymers Initial Prototype Presentation

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  1. EelectricEnergy Harvesting Through Piezoelectric PolymersInitial Prototype Presentation Don Jenket, II Kathy Li Peter Stone

  2. Presentation Overview • Design Schematics • Materials & Processing Justification • Circuitry • Tail • Wire/Electrodes • Initial Prototype Unveiling • Improvements for Final Design • Revised Timeline Eelectric

  3. Design Schematic Fan Rectifier Electronics Housing Eelectric

  4. Circuitry Schematic Diodes LED AC Capacitors Eelectric

  5. Materials & Processing Justifications • Circuitry – Germanium diodes • Require less voltage to bias (0.2V) • Fewest diodes used as possible • Fewer voltage drops • Less power consumed by the circuit • Storage Device • Capacitors used to store energy Eelectric

  6. “Eel Tail” Schematic 12 cm Tail End Head End Top View 2 cm Titanium Electrode Cu Wire Cu Wire Silver paste 0.04 mm Titanium Electrodes 12 cm 2 cm Side View Front View Eelectric

  7. Materials & Processing Justifications • Tail, Material – PVDF Eelectric

  8. Materials & Processing Justifications • Tail, Aspect Ratio – 2 cm x 12 cm Eelectric

  9. Materials & Processing Justifications • Electrodes – Titanium & Silver Paste • Gold desired in place of Titanium • Easier processing • Better properties in air • Wires – 5 mil insulated magnet wire • Flexible • Coiled, Wound, Twisted – noise reduction • Can come in contact with other conductors (i.e. flagpole) Eelectric

  10. Oscilloscope Data 2cm x 12cm Piezoelectric PVDF in Wind Eelectric

  11. Circuitry Schematic Diodes LED AC Capacitors Eelectric

  12. Current Progress • Working piezoelectric AC Source • AC Voltage ~700 mV peak-to-peak • Working rectifying circuit • Takes >2000 mV AC peak-to-peak to light an LED • What needs to be done? • Increase Voltage Output from PVDF Tail • Connecting multiple tails in series • Integrate the two working components Eelectric

  13. Improvements on Final Design • Layering • Two layers • Increases possible output • Decreases flexibility • Difficult to adhere together • Adhesive reinforcement • Silver Paste alone cannot hold layers together or wires down • Kapton and Mylar Tape • 2-5 mil thickness should not drastically alter flexibility Eelectric

  14. Improvements on Final Design • Electrode & Wiring Modifications 12 cm Silver Electrode Cu Wire 2 cm PVDF Gold Electrode • Allows for bending freedom • Strain relief of wire • Run wire straight to flagpole Eelectric

  15. Revised Timeline Eelectric

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