18 August 2005 Spectroscopic studies of arrays of multiwalled carbon nanotubes
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Abstract
Spectroscopic observations are presented for carbon nanotubes grown on silicon and quartz substrates in a hexagonal honeycomb configuration using self-assembly nanosphere lithography and plasma enhanced chemical vapor deposition method. A white light source is used as an incident beam and light reflected from the surface of the carbon nanotubes results in a distinctive signature in the reflected spectrum. A comparison of non-periodic arrays and periodic arrays of carbon nanotubes show that the reflectance signature is only observed when the carbon nanotubes are oriented in a periodic array. Further observations regarding the light antenna effect observed in nonperiodic arrays are also reported. Theoretical curves show good agreement to experimentally observed phenomena. The unique optical properties of the arrays combined with the excellent mechanical and electrical properties of carbon nanotubes indicate that these materials may find many uses in the field of optoelectronics.
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Brian Kimball, Joel B. Carlson, Asher Pembroke, Krzysztof Kempa, Z. F. Ren, Pengfei Wu, Chandra Yelleswarapu, Thomas Kempa, Glynda Benham, Y. Wang, A. Herczynski, Jakub Rybczynski, Z. P. Huang, D. V. G. L. N. Rao, "Spectroscopic studies of arrays of multiwalled carbon nanotubes", Proc. SPIE 5931, Nanoengineering: Fabrication, Properties, Optics, and Devices II, 59310X (18 August 2005); doi: 10.1117/12.617968; https://doi.org/10.1117/12.617968
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