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Carbon Nanotubes What is that? Siegmar Roth Max Planck Institut f. Festkörperforschung and

Carbon Nanotubes What is that? Siegmar Roth Max Planck Institut f. Festkörperforschung and SINEUROP Nanotech GmbH Stuttgart (s.roth@fkf.mpg.de). Carbon Nano Tubes. Carbon~. Snake Oil cures all deseases converts straw into gold burns permanently in lamp Solid State Version:

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Carbon Nanotubes What is that? Siegmar Roth Max Planck Institut f. Festkörperforschung and

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  1. Carbon Nanotubes What is that? Siegmar Roth Max Planck Institut f. Festkörperforschung and SINEUROP Nanotech GmbH Stuttgart (s.roth@fkf.mpg.de)

  2. Carbon Nano Tubes

  3. Carbon~

  4. Snake Oil cures all deseases converts straw into gold burns permanently in lamp Solid State Version: Philosopher’s Stone (arcanum)

  5. Carbon Black (is already as versatile as snake oil) Goes into car tires Cures bad stomach Used in painting and printing Helps watching eclipses of the sun …….. …….

  6. ~nano~

  7. ~nano~ ονάννος = dwarf /Zwerg 10-9nano...nine...neun...novem Wavelenth of light: 10-6, μmicrometer Interatomic distance: 1Å = 10-10 m

  8. ~tube

  9. ~tube: 1.) Aspect Ratio = Length / Diameter 2.) no dangling bonds perfect surface no surface scattering ballistic transport 3.) hollow inside

  10. Was sind Nanotubes? Besondere Russpartikel nahtlose Rohre aus graphitischem Kohlenstoff 1 nm Durchmesser mehrere µm lang Molekülphysik / Festkörperphysik

  11. Was sind Nanotubes? Mindestwissen: Single-Walled Multi-Walled Semiconducting Metallic

  12. CNTs inside: Völkl and Fraunhofer TEG

  13. transparent flexibele Transistor

  14. Fiber from Nanotubes: Bucky Yarn (ca. 100 μm thick, like human hair) Special Case Composite: Nanotubes + Binder (here binder is PVA)

  15. Properties of individual CNTs Length: microns to millimeters, Diameter: 0.4 -100 nmElectrical conductivity: metallic (ballistic transport) semiconducting p-, n-doped or ambipolar (Egap~1/d) mobility ~100 000 cm2/Vs (Si ~450 cm2/Vs) Operating current density > 10 10 A/cm2 (Cu~ 10 6 A/cm2) Thermal conductivity ~ 6000 W/Km (Cu~ 400W/Km) Gravimetric surface: > 1500 m2/gDensity: ~ 1.4 g/cm3 (Al~ 2.7 g/cm3) High mechanical strength and high resilience Chemically inert Temperature stability: up to 2800°C in Vacuum, 600°C in air

  16. The Price of 1 Nanotube: 1 tube contains about 10**5 atoms 12g --- 10**23 atoms --- 10**18 tubes 1g --- 1k € --- 10**17 tubes 1 tube costs about 10 f€

  17. How to make carbon nanotubes: CVD Carbon Arc Laser Ablation

  18. Real Nanotubes

  19. How to maks networks: Dip coating of suspension Spraying of Suspension Electroplating CVD Growth on Surfaces Mixing into Polymers, Metals, Ceramics, …

  20. Wet-chemical Synthesis of Supertuper Nanotube Transistor

  21. SEM Image of Bucky Paper

  22. AFM image of SWCNT over gold leads on Si chip, representing a „conventional“ carbon nanotube transistor

  23. Schematic view of „conventional“ Carbon Nanotube Transistor

  24. Vertical Nanotube Transistor (Patented by Infineon - and by Samsung ?!)

  25. „All-Carbon“ Transistor

  26. Wet-chemical synthesis of nanotube junctions

  27. Dy@C82 Dy atom (Dy@C82)n@nanotube Metallofullerene Peapod

  28. BMBF „INKONAMI“ Infineon

  29. Summary Transistors, Sensors Vias and Interconnects Composites Transparent Conducting Films Supercapacitors Membranes for Fuel Cells Biocompatible Materials

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