Properties of Single Walled Carbon Nanotube Films

10.26686/wgtn.16973317.v1 ◽

2021 ◽

Author(s):

◽

Shrividya Ravi

Keyword(s):

Carbon Nanotube ◽

Small Diameter ◽

Temperature Dependent ◽

Chiral Angle ◽

Single Walled Carbon Nanotube ◽

Single Walled Carbon ◽

Dominant Conduction Mechanism ◽

Temperature Activation ◽

Oxidative Effects ◽

First Time

<p>The preparation and physical properties of transparent, single-walled carbon nanotube (SWNT) networks fabricated from a novel, organic dispersion are described here for the first time. Characterisation of SWNT dispersions uncovered shifts in the radial breathing modes as a function of aggregation. These modes were redshifted in centrifuged butylamine dispersions by ~3cm -1. SWNT films cast using a simple, drop-deposition technique were annealed at 300'C after fabrication to remove solvent and surfactant residue. Annealed films with a sheet resistance of magnitude ~10 4 kOhms/square and transparency of ~85 % were fabricated in this study. The optoelectronic properties showed some inconsistency due to varying levels of oxygen doping and film thickness. Thin films annealed at 500'C were found to be preferentially depleted of nanotubes with high chiral angle and small diameter. Oxidative effects were also observed upon annealing at temperatures as low as 300'C. However, the reasons for this premature combustion are as yet uncertain. Temperature-dependent conduction studies revealed that the removal of adsorbed surfactant considerably reduced tunnelling barriers in annealed films. The dominant conduction mechanism in both unannealed and annealed films was found to be 3D variable range hopping. In the annealed films, a high temperature activation regime (with activation energy of 220 meV) was observed above 225 K. This regime is due to thermal activation over Schottky barriers within the nanotube network or electron activation over the pseudogap in armchair tubes.</p>

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Temperature-dependent modeling and performance analysis of single-walled carbon nanotube(SWCNT) bundle interconnects

2016 IEEE Region 10 Conference (TENCON) ◽

10.1109/tencon.2016.7848540 ◽

2016 ◽

Cited By ~ 1

Author(s):

Saurabh Lavaniya ◽

Satbir Singh ◽

Mayank Kumar Rai

Keyword(s):

Carbon Nanotube ◽

Performance Analysis ◽

Temperature Dependent ◽

Single Walled Carbon Nanotube ◽

Single Walled Carbon ◽

Swcnt Bundle ◽

And Performance

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Coalescence of the Fullerenes in SWNT with Bend Junction

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.697.789 ◽

2016 ◽

Vol 697 ◽

pp. 789-794

Author(s):

Kai Zhang ◽

Zi Wei Xu ◽

Feng Ding ◽

Gui Wu Liu ◽

Guan Jun Qiao

Keyword(s):

Monte Carlo ◽

Carbon Nanotube ◽

Kinetic Monte Carlo ◽

Chiral Angle ◽

Single Walled Carbon Nanotube ◽

Single Walled Carbon ◽

Lower Productivity ◽

Two Sides ◽

Formation Energies ◽

Specific Control

The coalescence of the fullerenes encapsulated in the host single-walled carbon nanotube (SWNT) with bend junction is explored theoretically by energy driven kinetic Monte Carlo (EDKMC) method. Despite the lower productivity of successful coalescence (with clear identified chiralitys), there is still a possibility to form the inner tube with bend junction which can copy the separated pentagon and heptagon from the host tube exactly with the chiralitys at the two sides clearly identified. The statistic to ~20 successfully coalesced inner tubes with bend junctions shows that the chiral angle differences (CAD) between the two sides > 20 o, which is determined by the minimization of the formation energies of the junctions. Therefore, the chirality distribution of the inner tube may be effectively narrowed by tuning the CAD of the bend host tube, which may provide an alternative way to the application of specific control to the chiralitys.

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Temperature-dependent transport and1/fnoise mechanisms in single-walled carbon nanotube films

Physical Review B ◽

10.1103/physrevb.81.125407 ◽

2010 ◽

Vol 81 (12) ◽

Cited By ~ 11

Author(s):

Ashkan Behnam ◽

Amlan Biswas ◽

Gijs Bosman ◽

Ant Ural

Keyword(s):

Carbon Nanotube ◽

Temperature Dependent ◽

Single Walled Carbon Nanotube ◽

Single Walled Carbon ◽

Dependent Transport ◽

Nanotube Films

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Thermal and Electrical Transport Measurements of Single-Walled Carbon Nanotube Strands

MRS Proceedings ◽

10.1557/proc-788-l5.11 ◽

2003 ◽

Vol 788 ◽

Author(s):

Diana-Andra Borca-Tasciuc ◽

Yann LeBon ◽

Claire Nanot ◽

Gang Chen ◽

Theodorian Borca-Tasciuc ◽

...

Keyword(s):

Thermal Conductivity ◽

Carbon Nanotube ◽

Electrical Properties ◽

Specific Heat ◽

Electrical Transport ◽

Published Data ◽

Temperature Dependent ◽

Single Walled Carbon Nanotube ◽

Single Walled Carbon ◽

Temperature Dependent Properties

ABSTRACTThis work reports temperature dependent thermal and electrical properties characterization of long (mm size) single-walled carbon nanotube strands. Electrical properties are measured using a 4-probe method. Thermal conductivity and specific heat capacity are determined using an AC driven, self-heating method. Normalized values of resistivity, thermal conductivity, specific heat, thermal diffusivity, and the temperature coefficient of resistance are reported. The trends observed in the temperature dependent properties are comparable with previously published data on multi-walled carbon nanotube strands measured with a similar technique.

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