Aligned Carbon Nanotube Arrays Formed by Cutting a Polymer Resin—Nanotube Composite
Tóm tắt
A simple technique is described here that produces aligned arrays of carbon nanotubes. The alignment method is based on cutting thin slices (50 to 200 nanometers) of a nanotube-polymer composite. With this parallel and well-separated configuration of nanotubes it should be possible to measure individual tube properties and to demonstrate applications. The results demonstrate the nature of rheology, on nanometer scales, in composite media and flow-induced anisotropy produced by the cutting process. The fact that nanotubes do not break and are straightened after the cutting process also suggests that they have excellent mechanical properties.
Từ khóa
Tài liệu tham khảo
BETHUNE, D.S., COBALT-CATALYZED GROWTH OF CARBON NANOTUBES WITH SINGLE-ATOMIC-LAYERWALLS, NATURE 363: 605 (1993).
Goldsmith, H. L., Rheology, Theory and Applications 4: 86 (1967).
Gray G. W. Liquid Crystals and Plastic Crystals 2 (1974).
HAMADA, N, NEW ONE-DIMENSIONAL CONDUCTORS - GRAPHITIC MICROTUBULES, PHYSICAL REVIEW LETTERS 68: 1579 (1992).
HATOH, H, DEPENDENCE OF PRETILT ANGLE ON THE TOPOGRAPHY OF SUBSTRATE IN LIQUID-CRYSTAL ALIGNMENT BROUGHT ABOUT BY RUBBING TECHNIQUE, APPLIED PHYSICS LETTERS 64: 1103 (1994).
OLK, C.H., SCANNING TUNNELING SPECTROSCOPY OF CARBON NANOTUBES, JOURNAL OF MATERIALS RESEARCH 9: 259 (1994).
RUOFF, R.S., RADIAL DEFORMATION OF CARBON NANOTUBES BY VAN-DER-WAALS FORCES, NATURE 364: 514 (1993).
SONG, S.N., ELECTRONIC-PROPERTIES OF GRAPHITE NANOTUBULES FROM GALVANOMAGNETIC EFFECTS, PHYSICAL REVIEW LETTERS 72: 697 (1994).
Sudo T. Electron Micrographs of Clay Minerals 31 (1981).