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  • 1
    Electronic Resource
    Electronic Resource
    Cathodoluminescence from Nanocrystalline Silicon Films in the Scanning Electron Microscope (1998)
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 63-64 (Dec. 1998), p. 191-198 
    Details
    ISSN: 1662-9779
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/26/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.63-64.191.pdf
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  • 2
    Electronic Resource
    Electronic Resource
    Near-field cathodoluminescence studies on n-doped gallium nitride films (2002)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 92 (2002), S. 976-978 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Near-field cathodoluminescence (NFCL) has been used to characterize hydride vapor phase epitaxy grown n-GaN films. This technique can obtain high resolution luminescence images and perform local measurements of the diffusion length for minority carriers in different parts of the sample. NFCL contrast observed in round growth hillocks at the sample surface, with a diameter of less than 10 μm, is compared with that observed by conventional cathodoluminescence in scanning electron microscope (CLSEM) techniques. In particular NFCL images reveal features not detected by CLSEM which is explained by the fact that under near field conditions the signal arises from a depth of only several tens of nanometers and is then directly related to the surface hillocks. Diffusion lengths of about 0.4 and 4 μm have been found for the holes in different regions of the samples at room temperature. The order of magnitude of these minority carriers diffusion lengths is in good agreement with previous measurements performed at different GaN samples with other techniques. The NFCL contrast and the differences in the measured diffusion lengths are discussed and explained by variations in local trap concentrations. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1487440
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  • 3
    Electronic Resource
    Electronic Resource
    A structural view of microtubule dynamics (1999)
    Springer
    Cellular and molecular life sciences 56 (1999), S. 133-142 
    Details
    ISSN: 1420-9071
    Keywords: Key Words. Tubulin; microtubule; dynamic instability; nucleotide; structure; electron crystallography.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract. The essential microtubule property of dynamic instability is based on the binding, hydrolysis and exchange of GTP in each tubulin dimer. The recent high-resolution structures of tubulin and the microtubule have given us the first view at atomic level of properties such as nucleotide exchangeability, the linkage between polymerization and nucleotide hydrolysis, and the origin of microtubule destabilization, as well as the mode of action of antimitotic agents such as taxol.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s000180050012
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  • 4
    Electronic Resource
    Electronic Resource
    Cathodoluminescence from Implanted and Anodized Polycrystalline Silicon Films (2000)
    Springer
    Journal of porous materials 7 (2000), S. 291-294 
    Details
    ISSN: 1573-4854
    Keywords: nanocrystalline silicon ; porous silicon ; cathodoluminescence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Luminescence emission of LPCVD polycrystalline silicon films has been studied by cathodoluminescence (CL) in the scanning electron microscope. As-deposited films show visible luminescence with dominant blue band. The relative intensity of blue emission is enhanced by implantation and by slight anodization treatments. Our investigations are consistent with previous PL results and indicate that the origin of blue emission is related to quantum confinement effects. On the other hand, the effect of annealing in these samples is a reduction of the CL signal that could be related to the increase of the nanocrystals size.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009644401297
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