scholarly journals Влияние подложки из оксида кремния на электронные свойства и электропроводность моно- и бислойных пленок из одностенных углеродных нанотрубок типа кресло: квантово-механическое исследование

2021 ◽  
Vol 63 (10) ◽  
pp. 1668
Author(s):  
О.Е. Глухова ◽  
А.А. Петрунин
Keyword(s):  
Electronic Properties ◽  
Silicon Oxide ◽  
Large Degree ◽  
Bilayer Film ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Armchair Nanotubes ◽  
Crystal Film ◽  
Oxide Substrates ◽  
Walled Carbon Nanotubes

We investigate electrical properties of mono- and bilayer single-walled carbon nanotube (SWCNT) films located on silicon oxide substrates. The substrate is a silicon dioxide crystal film characterized by a P42/mnm space group with (100) surface. The single-walled carbon nanotubes are armchair nanotubes of subnanometer diameter (4,4) and nanometer diameter (7,7). It is found that the diameter of the nanotubes is of great importance and determines the electronic properties of the film on the substrate in a large degree. Thin tubes (4,4) formed in a bilayer film (with a reciprocally perpendicular orientation relative to each other) have the least resistance. The substrate has insignificant influence on the electronic properties of such a film. Films with larger diameter tubes are characterized by a higher resistance value. It is found that the important role is played by the contact surface of the SWCNT–substrate.

Electron-microscopic imaging of single-walled carbon nanotubes grown on silicon and silicon oxide substrates

Microscopy ◽  
2005 ◽  
Vol 54 (suppl_1) ◽  
pp. i3-i7 ◽  
Author(s):  
Yoshikazu Homma ◽  
Daisuke Takagi ◽  
Satoru Suzuki ◽  
Ken-ich Kanzaki ◽  
Yoshihiro Kobayashi
Keyword(s):  
Carbon Nanotubes ◽  
Silicon Oxide ◽  
Single Walled Carbon Nanotubes ◽  
Electron Microscopic ◽  
Microscopic Imaging ◽  
Single Walled Carbon ◽  
Oxide Substrates ◽  
Walled Carbon Nanotubes

scholarly journals A tool box to ascertain the nature of doping and photoresponse in single-walled carbon nanotubes

2019 ◽  
Vol 21 (7) ◽  
pp. 4063-4071 ◽  
Author(s):  
Ana Santidrián ◽  
José M. González-Domínguez ◽  
Valentin Diez-Cabanes ◽  
Javier Hernández-Ferrer ◽  
Wolfgang K. Maser ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Dft Calculations ◽  
Electronic Properties ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes ◽  
First Time

The effect of doping on the electronic properties in bulk single-walled carbon nanotube (SWCNT) samples is studied for the first time using a new in situ Raman spectroelectrochemical method, and further verified by DFT calculations and photoresponse.

scholarly journals Spectroscopy of Filled Single-Walled Carbon Nanotubes

Nanomaterials ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 42
Author(s):  
Marianna V. Kharlamova ◽  
Christian Kramberger
Keyword(s):  
Electronic Properties ◽  
Absorption Spectroscopy ◽  
Light Emission ◽  
Optical Absorption Spectroscopy ◽  
Photoemission Spectroscopy ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Qualitative And Quantitative ◽  
Walled Carbon Nanotubes ◽  
X Ray Absorption

Many envisaged applications, such as nanoelectronics, photovoltaics, thermoelectric power generation, light-emission devices, energy storage and biomedicine, necessitate single-walled carbon nanotube (SWCNT) samples with specific uniform electronic properties. The precise investigation of the electronic properties of filled SWCNTs on a qualitative and quantitative level is conducted by optical absorption spectroscopy, Raman spectroscopy, photoemission spectroscopy and X-ray absorption spectroscopy. This review is dedicated to the description of the spectroscopic methods for the analysis of the electronic properties of filled SWCNTs. The basic principle and main features of SWCNTs as well as signatures of doping-induced modifications of the spectra of filled SWCNTs are discussed.

scholarly journals Supramolecular structures of terbium(iii) porphyrin double-decker complexes on a single-walled carbon nanotube surface

RSC Advances ◽  
2019 ◽  
Vol 9 (48) ◽  
pp. 28135-28145
Author(s):  
Ahmed I. A. Abd El-Mageed ◽  
Takuji Ogawa
Keyword(s):  
Carbon Nanotubes ◽  
Scanning Probe Microscopy ◽  
Single Walled Carbon Nanotubes ◽  
Supramolecular Structures ◽  
Scanning Probe ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Double Decker ◽  
Walled Carbon Nanotubes ◽  
First Time

For the first time, using scanning probe microscopy, the supramolecular structures of terbium porphyrin double-decker complexes were observed on single-walled carbon nanotubes surfaces, where the molecules formed a well-ordered self-assembled array.

scholarly journals Free Vibration Analysis of Single Walled Carbon Nanotube with Exponentially Varying Stiffness

2018 ◽  
Vol 5 (1) ◽  
pp. 201-212 ◽  
Author(s):  
Subrat Kumar Jena ◽  
S. Chakraverty
Keyword(s):  
Free Vibration ◽  
Differential Quadrature Method ◽  
Free Vibration Analysis ◽  
Beam Theory ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Scaling Parameters ◽  
Governing Differential Equation ◽  
Theory Application ◽  
Walled Carbon Nanotubes

Abstract In this paper, Differential Quadrature Method (DQM) is applied to investigate free vibration of Single Walled Carbon Nanotubes (SWCNTs) with exponentially varying stiffness based on non-local Euler-Bernoulli beam theory. Application of DQ method in the governing differential equation converts the problem to a generalized eigenvalue problem and its solution gives frequency parameters. Convergence of the results show that DQM solutions converge fast. In this article, a detailed investigation has been reported and MATLAB code has been developed to analyze the numerical results for different scaling parameters as well as for four types of boundary conditions. Present results are compared with other available results and are found to be in good agreement.

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