Helical superstructure of continuum graphene cone uncovered by TEM analysis of herringbone-striped pattern in graphitic whiskers
In: Journal of Crystal Growth, Jg. 451 (2016-10-01), S. 27-32
Online
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Zugriff:
Cone-shaped graphitic whiskers (CGWs) are a form of pyrolytic carbon, consisting of conically stacked hexagonal carbon layers with an apex angle of ~135–140°. Under transmission electron microscopy (TEM), CGWs often exhibit herringbone-striped patterns. Bright-field (BF) and dark-field (DF) TEM images indicated that the stripes are due to periodical appearance of a strong inter-planar reflection, which is consistent with helical rotation of layers with stepwise “layer overlap”. High-resolution TEM revealed that the period was ~14–15 layers. The relationship between apex angle and stripe periodicity of CGWs could be consistently explained in terms of a helical superstructure of tightly coiled continuous graphene cone.
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Helical superstructure of continuum graphene cone uncovered by TEM analysis of herringbone-striped pattern in graphitic whiskers
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Autor/in / Beteiligte Person: | Saito, Yukie ; Nishio-Hamane, Daisuke |
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Zeitschrift: | Journal of Crystal Growth, Jg. 451 (2016-10-01), S. 27-32 |
Veröffentlichung: | Elsevier BV, 2016 |
Medientyp: | unknown |
ISSN: | 0022-0248 (print) |
DOI: | 10.1016/j.jcrysgro.2016.06.037 |
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