19435094

Source:http://linkedlifedata.com/resource/pubmed/id/19435094

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Predicate	Object
rdf:type	pubmed:Citation
lifeskim:mentions	umls-concept:C0220806, umls-concept:C0233929, umls-concept:C0333562, umls-concept:C0439831, umls-concept:C0597635, umls-concept:C0871161, umls-concept:C1138408, umls-concept:C1521738, umls-concept:C1883254
pubmed:issue	3
pubmed:dateCreated	2009-5-13
pubmed:abstractText	Thin multi-walled carbon nanotubes (MWCNTs) were successfully synthesized by a rapid thermal chemical vapor deposition (RTCVD) method using a liquid catalyst. The growth of the thin MWCNTs was achieved by decomposition of C2H2 over Fe-Mo/MgO/citric acid directly at 700 degrees C for 30 min. Most thin MWCNTs, which had about 6 approximately 8 graphene layers, showed high purity (approximately 90%) and good crystallinity. Moreover, they showed homogenous morphology and uniform diameters. The average outer diameter of the thin MWCNTs was about 8 nm. The uniform diameter and good homogeneity of thin MWCNTs were mainly attributed to prevention of catalyst agglomeration at high temperature due to a short reaction time, and the high purity of thin MWCNTs was caused by suppression of the residual CNT growth after finishing a reaction in RTCVD process. Field emission properties of the thin MWCNTs were measured in a vacuum chamber at a pressure of less than 2 x 10(-7) Torr. The turn-on field was about 3.35 V/microm at the emission current density of 0.1 microA/cm2, and the emission current density was 2.5 mA/cm2 at an applied field of 6.7 V/microm. Particularly, the thin MWCNTs showed strong emission stability at emission current density of 0.8 mA/cm2 for 20 h.
pubmed:language	eng
pubmed:journal	http://linkedlifedata.com/resource/pubmed/journal/101088195
pubmed:status	PubMed-not-MEDLINE
pubmed:month	Mar
pubmed:issn	1533-4880
pubmed:author	pubmed-author:ChoiHae YoungHY, pubmed-author:ChunKyoung-YongKY, pubmed-author:JungSeung IlSI, pubmed-author:KimJong-UkJU, pubmed-author:LeeCheol JinCJ
pubmed:issnType	Print
pubmed:volume	9
pubmed:owner	NLM
pubmed:authorsComplete	Y
pubmed:pagination	2148-54
pubmed:year	2009
pubmed:articleTitle	Thin multi-walled carbon nanotubes synthesized by rapid thermal chemical vapor deposition and their field emission properties.
pubmed:affiliation	School of Electrical Engineering, Korea University, Seoul 136-713, Korea.
pubmed:publicationType	Journal Article, Research Support, Non-U.S. Gov't