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The spectrum of large radius exciton in an individual semiconducting single-walled carbon nanotube (SWCNT) is described within the framework of elementary potential model, in which exciton is modeled as bound state of two oppositely charged…

Other Condensed Matter · Physics 2010-11-18 Vadym M. Adamyan , Oleksii A. Smyrnov

The covalent functionalization of single-walled carbon nanotubes (SWCNTs) with luminescent quantum defects enables their application as near-infrared single-photon sources, as optical sensors, and for in-vivo tissue imaging. Tuning the…

Single-walled carbon nanotubes (SWCNTs) are promising absorbers and emitters to enable novel photonic and optoelectronic applications but are also known to severely suffer from low optical quantum yields. Here we demonstrate SWCNTs excitons…

Mesoscale and Nanoscale Physics · Physics 2017-12-20 Yue Luo , Ehsaneh D. Ahmadi , Kamran Shayan , Yichen Ma , Kevin S. Mistry , Changjian Zhang , James Hone , Jeffrey L. Blackburn , Stefan Strauf

It is important to understand the electronic interaction between single-walled carbon nanotubes (SWNTs) and graphene in order to use them efficiently in multifunctional hybrid devices. Here we deposited SWNT bundles on graphene-covered…

Materials Science · Physics 2014-08-21 Rahul Rao , Neal Pierce , Archi Dasgupta

We have studied photoluminescence (PL) and resonant Raman scatterings of single-walled carbon nanotubes (SWNTs) consisting of carbon-13 (SW13CNTs) synthesized from a small amount of isotopically modified ethanol. There was almost no change…

Materials Science · Physics 2009-11-11 Yuhei Miyauchi , Shigeo Maruyama

The ground-state exciton binding energy for single-walled carbon nanotubes (SWCNTs) in vacuum calculated ignoring the screening of Coulomb interaction appears to be much greater than the corresponding band gap. The most essential…

Other Condensed Matter · Physics 2010-11-18 Vadym M. Adamyan , Oleksii A. Smyrnov , Sergey V. Tishchenko

The recent development of efficient chirality sorting techniques has opened the way to the use of single-walled carbon nanotubes (SWCNTs) in a plethora of nanoelectronic, photovoltaic, and optoelectronic applications. However, to understand…

Mesoscale and Nanoscale Physics · Physics 2019-12-25 María Rosa Preciado-Rivas , Victor Alexander Torres-Sánchez , Duncan J. Mowbray

Single-walled carbon nanotubes (SWCNT) can be assembled into various macroscopic architectures, most notably continuous fibers and films, produced currently on a kilometer per day scale by floating catalyst chemical vapor depositionand…

Applied Physics · Physics 2019-08-23 Belén Alemán , Juan J. Vilatela

We develop a continuous theory of low-frequency dynamics for single-walled carbon nanotubes (SWCNTs) weakly interacting with the environment. In the frame of the approach proposed we obtain temperature dependence of SWCNTs specific heat in…

Mesoscale and Nanoscale Physics · Physics 2015-05-20 M. V. Avramenko , I. Yu. Golushko , A. E. Myasnikova , S. B. Rochal

The single-wall carbon nanotube (SWNT) can be a one-dimensional topological insulator, which is characterized by a $\mathbb{Z}$-topological invariant, winding number. Using the analytical expression for the winding number, we classify the…

Mesoscale and Nanoscale Physics · Physics 2019-03-13 Rin Okuyama , Wataru Izumida , Mikio Eto

The thermal transport properties of single-wall carbon nanotubes (SWCNTs) are re-investigated using the iterative solution of the Boltzmann transport equation by including four-phonon scattering. Using only three-phonon scattering, the…

Materials Science · Physics 2023-11-07 Ankit Jain

The Raman response of new structures grown after filling SWCNTs with ferrocene and transformation at moderate high temperatures is demonstrated to be very strong, even stronger than the response from the tubes. Transmission electron…

Materials Science · Physics 2019-01-25 Hans Kuzmany , Lei Shi , Jeno Kurti , Janos Koltai , Andrey Chuvilin , Takeshi Saito , Thomas Pichler

Arc-discharge with carbon electrodes containing Ni and Y2O3 in the presence of Fe(CO)5 vapors have been investigated. It is found that unlike the cathode deposit, the web deposited in the chamber contains mainly metallic single-walled…

Materials Science · Physics 2009-04-01 Rakesh Voggu , A. Govindaraj , C. N. R. Rao

The structures and symmetries of single-walled carbon nanotubes (SWNTs) are introduced in detail. The physical properties of SWNTs induced by their symmetries can be described by tensors in mathematical point of view. It is found that there…

Mesoscale and Nanoscale Physics · Physics 2009-09-29 Z. C. Tu , Z. C. Ou-Yang

The superconductivity of the 4-angstrom single-walled carbon nanotubes (SWCNTs) was discovered more than a decade ago, and marked the breakthrough of finding superconductivity in pure elemental undoped carbon compounds. The van Hove…

Superconductivity · Physics 2017-07-18 C. H. Wong , E. A. Buntov , R. E. Kasimova , A. F. Zatsepin

The interactions of charged particles moving paraxially in multi-walled carbon nanotubes (MWCNTs) may excite electromagnetic modes. This wake effect has recently been proposed as a potential novel method of short-wavelength high-gradient…

Accelerator Physics · Physics 2024-04-26 Pablo Martín-Luna , Alexandre Bonatto , Cristian Bontoiu , Guoxing Xia , Javier Resta-López

Photophysics of single-wall carbon nanotubes (SWCNTs) is intensively studied due to their potential application in light harvesting and optoelectronics. Excited states of SWCNTs form strongly bound electron-hole pairs, excitons, of which…

Mesoscale and Nanoscale Physics · Physics 2021-01-28 J. Palotas , M. Negyedi , S. Kollarics , A. Bojtor , P. Rohringer , Th. Pichler , F. Simon

Three kinds of the response mechanisms to the external pressure have been found for double-walled carbon nanotube (DWNT) bundle, depending strongly on their average radius and symmetry. The small-diameter DWNT bundle undergoes a small…

Materials Science · Physics 2015-05-13 Xiaoping Yang , Gang Wu , Jinming Dong

In the present work we discuss based on extensive fully atomistic molecular dynamics simulations the dynamics of Neon atoms oscillating inside (5,5)single-walled carbon nanotubes (CNTs) and boron-nitride (BNNT) ones. Our results show that…

Materials Science · Physics 2007-07-24 Karl M. Garcez , David L. Azevedo , Douglas S. Galvão

Single-wall carbon nanotubes (SWNTs) were used to augment the thermal transport properties of industrial epoxy. Samples loaded with 1 wt% unpurified SWNT material show a 70% increase in thermal conductivity at 40K, rising to 125% at room…

Materials Science · Physics 2009-11-07 M. J. Biercuk , M. C. Llaguno , M. Radosavljevic , J. K. Hyun , J. E. Fischer , A. T. Johnson