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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TLDR
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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Chirality-dependent curvature effect in smallest single-walled carbon nanotubes
TL;DR: Polarized Raman spectra are measured for 0.4 nm single-walled carbon nanotubes embedded in the zeolite matrix in this paper, and the radial breathing mode frequencies show obvious softening and the degree of the softening depends on the tube chirality.
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Gold-filled apo-ferritin for investigation of single-walled carbon nanotube growth on substrate
Daisuke Takagi,Akira Yamazaki,Yasuyuki Otsuka,Hideyuki Yoshimura,Yoshihiro Kobayashi,Yoshikazu Homma +5 more
TL;DR: In this article, the authors formed Au nanoparticles of 5 nm or less in diameter in the cavity of apo-ferritin (Au-Ferritin), which exhibited catalysis for the synthesis of single-walled carbon nanotube (SWCNT) by chemical vapor deposition on various substrates.
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Structural changes and Raman analysis of single-walled carbon nanotube buckypaper after high current density induced burning
TL;DR: In this article, a single-walled carbon nanotube buckypaper (BP) was exposed to high temperatures with electrical current-driven thermal heating either in the air or a vacuum.
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Evolution of catalyst particle size during carbon single walled nanotube growth and its effect on the tube characteristics
TL;DR: A series of Fe catalysts with different mean diameters, supported on alumina with different molar ratios, was studied before and after carbon single walled nanotubes growth using magnetic measurements and Raman scattering techniques.
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Spectroscopic analysis of single-wall carbon nanotubes and carbon nanotube peapods
TL;DR: In this paper, two modes in the region of the pentagonal pinch mode of C 60 were found and their resonance behavior for these two modes and their temperature dependence is shown in this paper.