Textures, hexaphenyl films

Figure 9-7. Elastic electron-diffraction pattern of a highly textured hexaphenyl film. The Miller indices are assigned using the interplanar spacings calculated in Ref. [137]. Inset Intensity of the (020) peak as a function of the angle between momentum transfer and the Teflon rubbing direction (see text) - taken from Ref. [138].

Figure 9-8. Top Loss function of highly textured hexaphenyl films for different values of momentum transfer parallel to the molecular axis. The lines connect plasmons related to the same excitation. Bottom Loss function of textured hexaphenyl films for different values of momentum transfer perpendicular to the molecular axis. In both graphs the spectra were normalized to obtain equal areas under the curves between 6 and 8 eV - taken from Ref. [138].

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