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26 Feb 2007

Volume 90, Issue 9, Articles (09xxxx)

Issue Cover Spotlight Figure

Appl. Phys. Lett. 90, 093127 (2007); http://dx.doi.org/10.1063/1.2710743 (3 pages)

Y. Q. Li, J. X. Tang, H. Wang, J. A. Zapien, Y. Y. Shan, and S. T. Lee
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Focused ion beam milling as a universal template technique for patterned growth of carbon nanotubes

Ying Chen, Hua Chen, Jun Yu, James S. Williams, and Vince Craig

Appl. Phys. Lett. 90, 093126 (2007); http://dx.doi.org/10.1063/1.2710785 (3 pages) | Cited 2 times

Online Publication Date: 2 March 2007

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Focused ion beam (FIB) milling system has been used to create nanosized patterns as the template for patterned growth of carbon nanotubes on Si substrate surface without predeposition of metal catalysts. Carbon nanotubes only nucleate and grow on the template under controlled pyrolysis of iron phthalocyanine at 1000 °C. The size, growth direction, and density of the patterned nanotubes can be controlled under different growth conditions and template sizes. Atomic force microscopy and electron microscopy analyses reveal that the selective growth on the FIB template is due to its special surface morphology and crystalline structure.
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81.07.De Nanotubes
81.05.ub Fullerenes and related materials
81.16.Rf Micro- and nanoscale pattern formation
81.16.Be Chemical synthesis methods
81.20.Wk Machining, milling
68.65.-k Low-dimensional, mesoscopic, nanoscale and other related systems: structure and nonelectronic properties

Heteroepitaxial growth and optical properties of ZnS nanowire arrays on CdS nanoribbons

Y. Q. Li, J. X. Tang, H. Wang, J. A. Zapien, Y. Y. Shan, and S. T. Lee

Appl. Phys. Lett. 90, 093127 (2007); http://dx.doi.org/10.1063/1.2710743 (3 pages) | Cited 13 times

Online Publication Date: 2 March 2007

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The authors present the results of heteroepitaxial growth of single-crystalline ZnS nanowire arrays on CdS nanoribbon substrates by the metal-catalyzed vapor-liquid-solid growth method. ZnS nanowire arrays were vertically or crosswise aligned to the surface of CdS nanoribbon substrates. Room-temperature lasing from ZnS nanowire arrays was demonstrated. The present synthesis provides a new approach to the rational design of building blocks for nanodevices.
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81.07.Vb Quantum wires
81.05.Dz II-VI semiconductors
81.15.Kk Vapor phase epitaxy; growth from vapor phase
78.67.Lt Quantum wires
42.55.Px Semiconductor lasers; laser diodes
42.60.Da Resonators, cavities, amplifiers, arrays, and rings
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