Rapid growth of long, vertically aligned carbon nanotubes through efficient catalyst optimization using metal film gradients

H. M. Christen; A. A. Puretzky; H. Cui; K. Belay; P. H. Fleming; D. B. Geohegan; D. H. Lowndes

doi:10.1021/nl048856f

Rapid growth of long, vertically aligned carbon nanotubes through efficient catalyst optimization using metal film gradients

H. M. Christen, A. A. Puretzky, H. Cui, K. Belay, P. H. Fleming, D. B. Geohegan, D. H. Lowndes

Functional Hybrid Nanomaterials

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90 Scopus citations

Abstract

Pulsed laser deposited, orthogonally overlapping metal film gradients are introduced as a versatile method to optimize desired nanomaterial characteristics simultaneously as a function of catalyst composition and film thickness. Catalyst libraries generated by this method are applied here to study the growth of vertically aligned carbon nanotubes by chemical vapor deposition in acetylene from Mo/Fe/Al multilayers on Si. An Fe/Mo atomic ratio of 16:1 was discovered to be optimal for the rapid growth of nanotubes to long lengths, at rates exceeding 1 mm/hr.

Original language	English
Pages (from-to)	1939-1942
Number of pages	4
Journal	Nano Letters
Volume	4
Issue number	10
DOIs	https://doi.org/10.1021/nl048856f
State	Published - Oct 2004

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abstract = "Pulsed laser deposited, orthogonally overlapping metal film gradients are introduced as a versatile method to optimize desired nanomaterial characteristics simultaneously as a function of catalyst composition and film thickness. Catalyst libraries generated by this method are applied here to study the growth of vertically aligned carbon nanotubes by chemical vapor deposition in acetylene from Mo/Fe/Al multilayers on Si. An Fe/Mo atomic ratio of 16:1 was discovered to be optimal for the rapid growth of nanotubes to long lengths, at rates exceeding 1 mm/hr.",

author = "Christen, {H. M.} and Puretzky, {A. A.} and H. Cui and K. Belay and Fleming, {P. H.} and Geohegan, {D. B.} and Lowndes, {D. H.}",

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AU - Puretzky, A. A.

AU - Cui, H.

AU - Belay, K.

AU - Fleming, P. H.

AU - Geohegan, D. B.

AU - Lowndes, D. H.

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AB - Pulsed laser deposited, orthogonally overlapping metal film gradients are introduced as a versatile method to optimize desired nanomaterial characteristics simultaneously as a function of catalyst composition and film thickness. Catalyst libraries generated by this method are applied here to study the growth of vertically aligned carbon nanotubes by chemical vapor deposition in acetylene from Mo/Fe/Al multilayers on Si. An Fe/Mo atomic ratio of 16:1 was discovered to be optimal for the rapid growth of nanotubes to long lengths, at rates exceeding 1 mm/hr.

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Rapid growth of long, vertically aligned carbon nanotubes through efficient catalyst optimization using metal film gradients

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