Structural ( n, m) determination of isolated single-wall carbon nanotubes by resonant Raman scattering.
Ado Jorio,Riichiro Saito,Jason H. Hafner,Charles M. Lieber,M. Hunter,T. McClure,G. Dresselhaus,Mildred S. Dresselhaus +7 more
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It is shown that the Raman scattering technique can give complete structural information for one-dimensional systems, such as carbon nanotubes, by measuring one radial breathing mode frequency omega(RBM) and using the theory of resonant transitions.Abstract:
We show that the Raman scattering technique can give complete structural information for one-dimensional systems, such as carbon nanotubes. Resonant confocal micro-Raman spectroscopy of an (n,m) individual single-wall nanotube makes it possible to assign its chirality uniquely by measuring one radial breathing mode frequency omega(RBM) and using the theory of resonant transitions. A unique chirality assignment can be made for both metallic and semiconducting nanotubes of diameter d(t), using the parameters gamma(0) = 2.9 eV and omega(RBM) = 248/d(t). For example, the strong RBM intensity observed at 156 cm(-1) for 785 nm laser excitation is assigned to the (13,10) metallic chiral nanotube on a Si/SiO2 surface.read more
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Journal ArticleDOI
Investigation of effects produced by chemical functionalization in single-walled and multi-walled carbon nanotubes using Raman spectroscopy
TL;DR: In this paper, single-wall and multi-wall carbon nanotubes were characterized by Raman spectroscopy to observe the changes in their physical and structural properties on functionalization.
Journal ArticleDOI
Studies on the growth of pure double-walled carbon nanotube and its phonon spectra
Toshiya Murakami,Kazuyo Matsumoto,Kenji Kisoda,Ryoji Naito,Koji Nishio,Toshiyuki Isshiki,Hiroshi Harima +6 more
TL;DR: In this article, double-walled carbon nanotubes (DWCNTs) with a purity higher than 99% were synthesized by chemical vapor deposition, and their Raman spectra were observed at different excitation wavelengths λex.
Book ChapterDOI
Laser Interactions for the Synthesis and In Situ Diagnostics of Nanomaterials
David B. Geohegan,Alexander A. Puretzky,Mina Yoon,Gyula Eres,Christopher M. Rouleau,Kai Xiao,Jeremy Jackson,Jason D. Readle,Murari Regmi,Norbert Thonnard,Gerd Duscher,Matthew F. Chisholm,Karren L. More +12 more
TL;DR: In this paper, the authors illustrate the key challenges and progress in laser interactions for the synthesis and in situ diagnostics of nanomaterials through recent examples involving primarily carbon nanometres, including the pulsed growth of carbon nanotubes and graphene.
Journal ArticleDOI
Highly compressed nanosolution restricted in cylindrical carbon nanospaces.
Masayasu Nishi,Takahiro Ohkubo,Kazuma Tsurusaki,Atsushi Itadani,Bashir Ahmmad,Koki Urita,Isamu Moriguchi,Shigeharu Kittaka,Yasushige Kuroda +8 more
TL;DR: The results of X-ray absorption fine structure (XAFS) spectra confirmed that the proportion of dissolved species in nanospaces against the total adsorbed amounts of zinc ions on the open-pore SWNT and MWNT were 44 and 61%, respectively, indicating the formation of a dehydrated structure in narrower nanospace.
Journal ArticleDOI
Improve the field emission uniformity of carbon nanotubes treated by ball-milling process
TL;DR: In this paper, carbon nanotubes (CNTs) deposited by chemical vapor deposition (CVD) were treated by ball milling and the morphologies and field emission properties of the treated CNTs depending on milling time were studied.