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  • 1
    Digitale Medien
    Digitale Medien
    A simple and robust electron beam source from carbon nanotubes (1996)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 69 (1996), S. 1969-1971 
    Details
    ISSN: 1077-3118
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: A simple fabrication method is described to produce reliable and robust (self-repairing) field emission sources from randomly aligned carbon nanotubes. The sources display stable and reproducible current–voltage characteristics with sharp turn on near 100 V and emission currents up to 400 mA/cm2 at 200 V. Two successful methods are described for patterning the emission source area into emitting and nonemitting regions. © 1996 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.117638
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  • 2
    Digitale Medien
    Digitale Medien
    Transformation of BxCyNz nanotubes to pure BN nanotubes (2002)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 81 (2002), S. 1110-1112 
    Details
    ISSN: 1077-3118
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: We demonstrate that multiwalled BxCyNz nanotubes can be efficiently converted to BN multiwalled nanotubes via an oxidation treatment. The microstructure and composition of the precursors and final products have been characterized by high-resolution transmission electron microscopy, electron energy-loss spectroscopy, and energy dispersive x-ray spectroscopy. The conversion process is monitored by thermogravimetric analysis. Carbon layers of BxCyNz nanotubes start to oxidize at 550 °C, thereby transforming BxCyNz nanotubes into pure BN nanotubes. The remarkable thermal stability of pure BN nanotubes in an oxidizing environment is also established. © 2002 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.1498494
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  • 3
    Digitale Medien
    Digitale Medien
    Structure of boron nitride nanotubules (2001)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 78 (2001), S. 2772-2774 
    Details
    ISSN: 1077-3118
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: We have used high-resolution transmission electron microscopy to resolve the [0001] projected basal plane structure and chirality relationships in boron nitride nanotubes. Evidence for tube growth along both 〈101¯0〉 and 〈112¯0〉 is found. Our results suggest that the 〈112¯0〉 (armchair) tubes form first. Subsequent growth can take the form of a 〈101¯0〉 (zig-zag) tube or additional armchair tubes. In both cases, the additional walls can be accommodated without the need for defect formation for circumferential tube closure. These results suggest that real boron nitride tubes may, in practice, realize their inherently high modulus and display less variation of mechanical properties than tubes comprised of carbon. © 2001 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.1367906
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  • 4
    Digitale Medien
    Digitale Medien
    1/f noise in carbon nanotubes (2000)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 76 (2000), S. 894-896 
    Details
    ISSN: 1077-3118
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: The electrical noise characteristics of single-walled carbon nanotubes have been investigated. For all three cases of individual isolated nanotubes, thin films of interconnected nanotubes, and bulk nanotube mats, anomalously large bias-dependent 1/f noise is found. The noise magnitude greatly exceeds that commonly observed in metal films, carbon resistors, or even carbon fibers with comparable resistances. A single empirical expression describes the noise for all nanotube samples, suggesting a common noise-generating mechanism proportional only to the number of nanotubes in the conductor. We consider likely sources of the fluctuations, and consequences for electronic applications of nanotubes if the excessive noise cannot be suppressed. © 2000 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.125621
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  • 5
    Digitale Medien
    Digitale Medien
    Materials Peeling and sharpening multiwall nanotubes (2000)
    [s.l.] : Macmillan Magazines Ltd.
    Nature 406 (2000), S. 586-586 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] To realize the full potential of multiwall carbon nanotubes in applications such as biological and scanned probes, it is desirable to develop techniques for controlling their shape and geometry. Here we describe a method by which the outer layers of a multiwall nanotube can be successively ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/35020698
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  • 6
    Digitale Medien
    Digitale Medien
    Carbon nanotubes as nanoscale mass conveyors (2004)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 428 (2004), S. 924-927 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The development of manipulation tools that are not too ‘fat’ or too ‘sticky’ for atomic scale assembly is an important challenge facing nanotechnology. Impressive nanofabrication capabilities have been demonstrated with scanning probe manipulation of atoms and molecules ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/nature02496
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  • 7
    Digitale Medien
    Digitale Medien
    Fully collapsed carbon nanotubes (1995)
    [s.l.] : Nature Publishing Group
    Nature 377 (1995), S. 135-138 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Carbon nanotube samples were prepared by a carbon-arc discharge method9. Our synthesis chamber employed a water-cooled 0.625-inch graphite anode, a water-cooled copper cathode, 650 Torr of environmental helium pressure, a 120 A d.c. electrode current, and an electrode gap of a few millimetres. The ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/377135a0
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  • 8
    Digitale Medien
    Digitale Medien
    Rotational actuators based on carbon nanotubes (2003)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 424 (2003), S. 408-410 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Nanostructures are of great interest not only for their basic scientific richness, but also because they have the potential to revolutionize critical technologies. The miniaturization of electronic devices over the past century has profoundly affected human communication, computation, ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/nature01823
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  • 9
    Digitale Medien
    Digitale Medien
    C 36 , a new carbon solid (1998)
    [s.l.] : Macmillan Magazines Ltd.
    Nature 393 (1998), S. 771-774 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Under appropriate non-equilibrium growth conditions, carbon atoms form relatively stable hollow clusters of well-defined mass number, collectively known as fullerenes. The mass production, purification and condensation of such clusters into a molecular solid is generally essential to full ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/31668
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  • 10
    Digitale Medien
    Digitale Medien
    Compositionally dependent superconducting transition temperature of YBaCu oxides
    Amsterdam : Elsevier
    Physics Letters A 123 (1987), S. 34-36 
    Details
    ISSN: 0375-9601
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Physik
    Materialart: Digitale Medien
    URL: http://linkinghub.elsevier.com/retrieve/pii/0375-9601(87)90757-2
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