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Rayleigh-Instability-Induced Metal Nanoparticle Chains Encapsulated in Nanotubes Produced by Atomic Layer Deposition

Qin, Yong and Lee, Seung-Mo and Pan, Anlian and Gösele, Ulrich and Knez, Mato (2007) Rayleigh-Instability-Induced Metal Nanoparticle Chains Encapsulated in Nanotubes Produced by Atomic Layer Deposition. NANO LETTERS, 8 (1). pp. 114-118.

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Official URL: http://pubs.acs.org/doi/abs/10.1021/nl0727157

Abstract

Cu nanoparticle chains encapsulated in Al2O3 nanotubes were successfully generated in a controlled manner by reduction of CuO nanowires embedded in Al2O3 at a sufficiently high temperature. The Al2O3 coating was deposited by atomic layer deposition (ALD). The particles mainly show a rodlike shape and are regularly distributed. The particle diameters and chain lengths corresponding to the inner diameters and lengths of the tubes, respectively, are controlled by the size of the CuO nanowire templates. Rayleigh instability, assisted by the uniform volume shrinkage created by the reduction of oxide to metal, is proposed to induce the formation of the nanochains. This method may potentially be extended to the synthesis of nanochains of other metals by reducing corresponding oxide nanowires embedded in ALD shells.

Item Type:Article
Subjects:Material Science > Nanofabrication processes and tools
ID Code:461
Deposited By:Farnush Anwar
Deposited On:03 Dec 2008 13:42
Last Modified:26 Mar 2009 14:44

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