We report the observation of an unusual self-peeling effect which allows the synthesis of free standing vertically aligned carbon nanotube films filled with large quantities of Fe3C and small quantities of γ-Fe crystals. We demonstrate that this effect depends on the interplay of three main factors: (1) the physical interactions between the chosen substrate surface and grown carbon nanotubes (CNTs), which is fixed by the composition of the used substrate (111 SiO2/Si or quartz), (2) the CNT-CNT Van der Waals interactions, and (3) the differential thermal contraction between the grown CNT film and the used substrate, which is fixed by the cooling rate differences between the grown film and the used quartz or Si/SiO2 substrates. The width and stability of these films are then further increased to cm-scale by addition of small quantities of toluene to the ferrocene precursor.
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28 June 2017
Research Article|
June 27 2017
Peeling off effects in vertically aligned Fe3C filled carbon nanotubes films grown by pyrolysis of ferrocene
Gang Xiang
a)
F. S. Boi and D. Medranda contributed equally to this work.
b)
Electronic mail: [email protected]
c)
Electronic mail: [email protected]
d)
Electronic mail: [email protected]
J. Appl. Phys. 121, 244302 (2017)
Article history
Received:
May 05 2017
Accepted:
June 13 2017
Citation
Filippo S. BoiDaniel MedrandaSameera IvaturiJiayu WangJian GuoMu LanJiqiu WenShanling WangYi HeGavin MountjoyMaureen A. C. WillisGang Xiang; Peeling off effects in vertically aligned Fe3C filled carbon nanotubes films grown by pyrolysis of ferrocene. J. Appl. Phys. 28 June 2017; 121 (24): 244302. https://doi.org/10.1063/1.4989988
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