1. Eelectric Energy Harvesting from Laminar Fluid Flow Progress Report - March 4 Don Jenket Peter Stone Kathy Li George Waksman

2. Progress Report March 4, 2004Eelectric Presentation Overview Project Overview Progress Problems Encountered Future Plans Timeline

3. Progress Report March 4, 2004Eelectric Project Overview Creates vorticity from laminar flow Vortices create waves in the tail of the device Mechanical waves in the tail are converted to electrical energy http://www.darpa.mil/dso/trans/energy/pa_opt.html

4. Progress Report March 4, 2004Eelectric Sample Schematic Top View Side ViewFront View Cu Strip 6 cm 2 cm 0.22 cm 0.5 cm 0.22 cm0.5 cm 6 cm 2 cm 0.04 cm Cu Strip

5. Progress Report March 4, 2004Eelectric Electrode Schematic V Measuring Electrodes

6. Progress Report March 4, 2004Eelectric Electrode Testing Silver Paste Good conductivity Poor adhesive properties Copper Leads Good conductivity Too bulky and stiff Sputtered Titanium Attached but untested

7. Progress Report March 4, 2004Eelectric Problems Encountered PVDF Cost Few suppliers & Slow shipping Electrodes Difficult to find a balance between adhesion and flexibility Measurement Hard to get repeatable or quantitative data

8. Progress Report March 4, 2004Eelectric Future Plans Tensile Testing Determine mechanical properties Enable theoretical energy calculations Differential Scanning Calorimetry (DSC) Determine glass transition temperature Revised sample production Air Tunnel Flow Tank

9. Progress Report March 4, 2004Eelectric Project Timeline