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Richard Hansen Micro-electro-mechanical Systems (MEMS) Motivation CNT-M CVI Process CVI Challenges Materials Properties Conclusion.

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Presentation on theme: "Richard Hansen Micro-electro-mechanical Systems (MEMS) Motivation CNT-M CVI Process CVI Challenges Materials Properties Conclusion."— Presentation transcript:

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3 Richard Hansen

4 Micro-electro-mechanical Systems (MEMS) Motivation CNT-M CVI Process CVI Challenges Materials Properties Conclusion

5 MEMS Fabrication Processes DRIE Deep reactive-ion etching LIGA Lithographie, Galvanoformung, Abformung (Lithography, Electroplating, and Molding) Motivation CNT-M CVI Process CVI Challenges Materials Properties Conclusion

6 Carbon-Nanotube-Templated Microfabrication Motivation CNT-M CVI Process CVI Challenges Materials Properties Conclusion

7 Carbon-Nanotube-Templated Microfabrication Motivation CNT-M CVI Process CVI Challenges Materials Properties Conclusion

8 CVI Using Metal Carbonyl Precursors Heating Electrodes Metal Carbonyl CNT SampleCartridge Heater Gas Motivation CNT-M CVI Process CVI Challenges Materials Properties Conclusion

9 High Tensile Stress in Deposited Metal Film 1 mm Motivation CNT-M CVI Process CVI Challenges Materials Properties Conclusion

10 Extent of Infiltration Motivation CNT-M CVI Process CVI Challenges Materials Properties Conclusion 200 μm 1 μm

11 Structure of Metal film in CNT composite materials The metal oxycarbide puts metal atoms in an FCC structure with C or O at their octahedral sites (Lattice constant of about 4.16 Å) TEM AnalysisPowder Diffraction Motivation CNT-M CVI Process CVI Challenges Materials Properties Conclusion

12 Materials Properties of CNT composite materials Cantilever Setup Young’s Modulus on the order of 10 GPa 4-Point Probe Setup via the Van der Pauw Method Resistivity on the order of 100 μΩ  m Motivation CNT-M CVI Process CVI Challenges Materials Properties Conclusion

13  Versatile Process  High-Aspect-Ratio  Materials Properties Dominated By Filler Material Motivation CNT-M CVI Process CVI Challenges Materials Properties Conclusion


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