Carbon Nanofiber Images |
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Credits: Sarah E. Baker, Kiu-Yuen Tse, Matt Marcus, Jeremy Streifer, and Prof. Robert Hamers, Dept. of Chemistry, University of Wisconsin(For more information, contact Prof. Hamers at 608-262-6371 or ) These images are scanning electron microscope images of shapes created by patterning vertically aligned carbon nanofibers. The individual carbon nanofibers are 50-75 nanometers in diameter. The diameter of a human hair is approximately 100 microns, or 100,000 nanometers. So, the carbon nanofiber "hairs" on the Bucky Badgers below are about 1,300 times thinner than a human hair. You can fit about 6-10 complete Buckys within the width of a human hair, and you can put about 9,000 of them on the head of a pin. The patterning was done using a LEO Supra VP Scanning electron microscope equipped with a Nabity electron-beam lithography apparatus to define a spatial pattern of nickel catalyst. The nickel catalyzes the plasma-assisted growth of the carbon nanofibers in a mixture of acetylene and ammonia. This work is based in part on research sponsored by the National Science Foundation. High-resolution images can be viewed by clicking on the images below (Note: most high resolution images are TIF files).
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