NDLI: Formation of free-standing carbon nanotube array on super-aligned carbon nanotube film and its field emission properties

Content Provider	Springer Nature Link
Author	Liu, Peng Wei, Yang Liu, Liang Jiang, Kaili Fan, Shoushan
Copyright Year	2012
Abstract	Flexible and free-standing well-aligned carbon nanotube arrays have been synthesized on super-aligned carbon nanotube films. The combined structure of the carbon nanotube array and carbon nanotube film was formed during chemical vapor deposition on a quartz substrate which had previously been covered with a super-aligned carbon nanotube film. It was found that the growing carbon nanotube array could support up the super-aligned carbon nanotube film entirely, and the top of the array became densely entangled with the super-aligned carbon nanotube film. The carbon nanotube array with the super-aligned carbon nanotube film could be easily peeled off from the quartz substrate as a whole, giving a flexible and free-standing structure with good mechanical properties. The bottom of the array was also exposed after being peeled off and was used as a field emitter. The combined structure of the carbon nanotube array with the carbon nanotube film allowed adsorbent-free field emission by passing a heating current through it. Furthermore, due to the fast thermal response of the structure and the long time needed for re-adsorption of adsorbates in vacuum, it was found that pulsed heating with a 10% duty ratio was sufficient for adsorbent-free field emission. The heating power necessary to sustain the adsorbent-free state can be lowered in this way.
Starting Page	421
Ending Page	426
Page Count	6
File Format	PDF
ISSN	19980124
Journal	Nano Research
Volume Number	5
Issue Number	6
e-ISSN	19980000
Language	English
Publisher	Tsinghua Press
Publisher Date	2012-05-28
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Carbon nanotube array super-aligned carbon nanotube film adsorbent-free field emission Biomedicine general Condensed Matter Physics Atomic/Molecular Structure and Spectra Materials Science Nanotechnology Biotechnology
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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