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Eelectric Energy Harvesting Through Piezoelectric Polymers Progress Report - April 29 Don Jenket, II Kathy Li Peter Stone.

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Presentation on theme: "Eelectric Energy Harvesting Through Piezoelectric Polymers Progress Report - April 29 Don Jenket, II Kathy Li Peter Stone."— Presentation transcript:

1 Eelectric Energy Harvesting Through Piezoelectric Polymers Progress Report - April 29 Don Jenket, II Kathy Li Peter Stone

2 Progress Report April 29, 2004Eelectric Presentation Overview Changes to Design Quantitative Analysis of Tail Troubleshooting Revised Timeline

3 Progress Report April 29, 2004Eelectric Tail Schematic Copper Wire Mylar Tape Silver Paste Electrode PVDF 2 cm 12 cm

4 Progress Report April 29, 2004Eelectric Oscillation Frequency Fan Off Fan On

5 Progress Report April 29, 2004Eelectric Tail Capacitance C = e A/d A = 7.5 * 10 -4 m 2 e (at < 0.1 kHz) = 11.5e o ±10% d = 4 *10 -5 m Calculated Capacitance Lower bound: 1719 pF Upper bound: 2099 pF Median: 1910 pF Capacitance Measured at 10 Hz: 1940 pF

6 Progress Report April 29, 2004Eelectric Tail Power Output Resistance (  ) Peak Voltage Amplitude (mV) Power = V 2 /R (nW) 10 00035.1123 100 00091.784 1 000 00030191

7 Progress Report April 29, 2004Eelectric Current Resistance (  ) Voltage (mV) Current (  A) 10 00035.13.51 100 00091.70.917 1 000 0003010.301

8 Progress Report April 29, 2004Eelectric Troubleshooting Series Connection to Increase Voltage Succeeded in connecting two tails in series 500-600 mV amplitude in series compared with 300 mV for a single tail Increase Current Connect tails in parallel Decrease the overall circuit Impedance Measure the Circuit Impedance Accurate prediction of current Impedance of the circuit varies nonlinearly with current

9 Progress Report April 29, 2004Eelectric Revised Timeline


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