scholarly journals Carcinogenic potential of high aspect ratio carbon nanomaterials

2016 ◽  
Vol 3 (3) ◽  
pp. 483-493 ◽  
Author(s):  
Sudjit Luanpitpong ◽  
Liying Wang ◽  
Donna C. Davidson ◽  
Heimo Riedel ◽  
Yon Rojanasakul
Keyword(s):  
Carbon Nanotubes ◽  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Carbon Nanomaterials ◽  
Recent Advances ◽  
Carcinogenic Potential

Review of recent advances in nanomaterial genotoxicity and carcinogenicity with a focus on lung carcinogenicity of high aspect ratio carbon nanotubes.

Boehmite Nanofibers as a Dispersant for Nanotubes in an Aqueous Sol

2018 ◽  
Author(s):  
Gen Hayase
Keyword(s):  
Carbon Nanotubes ◽  
Aspect Ratio ◽  
Aqueous Solutions ◽  
High Aspect Ratio ◽  
Multiwall Carbon Nanotubes ◽  
Multiwall Carbon ◽  
Nanotube Films

By exploiting the dispersibility and rigidity of boehmite nanofibers (BNFs) with a high aspect ratio of 4 nm in diameter and several micrometers in length, multiwall-carbon nanotubes (MWCNTs) were successfully dispersed in aqueous solutions. In these sols, the MWCNTs were dispersed at a ratio of about 5–8% relative to BNFs. Self-standing BNF–nanotube films were also obtained by filtering these dispersions and showing their functionality. These films can be expected to be applied to sensing materials.

Functionalization and Tip-open of Carbon Nanotubes for High-Performance Symmetric Supercapacitor

2021 ◽  
Author(s):  
Yaxiong Zhang ◽  
Erqing Xie
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Aspect Ratio ◽  
Specific Surface ◽  
Surface Area ◽  
Chemical Stability ◽  
High Aspect Ratio ◽  
High Performance ◽  
Large Specific Surface Area ◽  
Symmetric Supercapacitor

Carbon nanotubes (CNTs) have been widely studied as supercapacitor electrodes because of their excellent conductivity, high aspect ratio, excellent mechanical properties, chemical stability, and large specific surface area. However, the...

scholarly journals From Collisions to Bundles: An Adaptive Coarse-Grained Model for the Aggregation of High-Aspect-Ratio Carbon Nanotubes

2020 ◽  
Vol 124 (15) ◽  
pp. 8359-8370 ◽  
Author(s):  
Nikolaos Kateris ◽  
Philipp Kloza ◽  
Rulan Qiao ◽  
James A. Elliott ◽  
Adam M. Boies
Keyword(s):  
Carbon Nanotubes ◽  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Coarse Grained ◽  
Coarse Grained Model

High-aspect ratio and horizontally oriented carbon nanotubes synthesized by RF-cCVD

2010 ◽  
Vol 19 (1) ◽  
pp. 67-72 ◽  
Author(s):  
Enkeleda Dervishi ◽  
Zhongrui Li ◽  
Fumiya Watanabe ◽  
Viney Saini ◽  
Alexandru R. Biris ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Aspect Ratio ◽  
High Aspect Ratio

scholarly journals Percolation and Transport Properties in The Mechanically Deformed Composites Filled with Carbon Nanotubes

2020 ◽  
Vol 10 (4) ◽  
pp. 1315 ◽  
Author(s):  
Artyom Plyushch ◽  
Dmitry Lyakhov ◽  
Mantas Šimėnas ◽  
Dzmitry Bychanok ◽  
Jan Macutkevič ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Composite Material ◽  
Aspect Ratio ◽  
Percolation Threshold ◽  
Transport Properties ◽  
High Aspect Ratio ◽  
Hard Core ◽  
Mechanical Deformation ◽  
Mean Values ◽  
Isotropic Composite

The conductivity and percolation concentration of the composite material filled with randomly distributed carbon nanotubes were simulated as a function of the mechanical deformation. Nanotubes were modelled as the hard-core ellipsoids of revolution with high aspect ratio. The evident anisotropy was observed in the percolation threshold and conductivity. The minimal mean values of the percolation of 4.6 vol. % and maximal conductivity of 0.74 S/m were found for the isotropic composite. Being slightly aligned, the composite demonstrates lower percolation concentration and conductivity along the orientation of the nanotubes compared to the perpendicular arrangement.

Fabrication of flexible, transparent and conductive films from single-walled carbon nanotubes with high aspect ratio using poly((furfuryl methacrylate)-co-(2-(dimethylamino)ethyl methacrylate)) as a new polymeric dispersant

Nanoscale ◽  
2015 ◽  
Vol 7 (15) ◽  
pp. 6745-6753 ◽  
Author(s):  
Taeheon Lee ◽  
Byunghee Kim ◽  
Sumin Kim ◽  
Jong Hun Han ◽  
Heung Bae Jeon ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Ethyl Methacrylate ◽  
Conductive Films ◽  
Aspect Ratios ◽  
Polymeric Dispersant ◽  
Walled Carbon Nanotubes

We synthesized p(FMA-co-DMAEMA) for the dispersion of SWCNTs while maintaining their high aspect ratios.

scholarly journals High aspect ratio nanotubes assembled from macrocyclic iminium salts

2018 ◽  
Vol 115 (36) ◽  
pp. 8883-8888 ◽  
Author(s):  
Chao Sun ◽  
Meng Shen ◽  
Anton D. Chavez ◽  
Austin M. Evans ◽  
Xiaolong Liu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Modular Design ◽  
Chlorinated Solvents ◽  
Iminium Salts ◽  
Iminium Ions ◽  
Iminium Ion ◽  
Dynamics Simulations ◽  
Organic Nanotubes

One-dimensional nanostructures such as carbon nanotubes and actin filaments rely on strong and directional interactions to stabilize their high aspect ratio shapes. This requirement has precluded making isolated, long, thin organic nanotubes by stacking molecular macrocycles, as their noncovalent stacking interactions are generally too weak. Here we report high aspect ratio (>103), lyotropic nanotubes of stacked, macrocyclic, iminium salts, which are formed by protonation of the corresponding imine-linked macrocycles. Iminium ion formation establishes cohesive interactions that, in organic solvent (tetrahydrofuran), are two orders of magnitude stronger than the neutral macrocycles, as explained by physical arguments and demonstrated by molecular dynamics simulations. Nanotube formation stabilizes the iminium ions, which otherwise rapidly hydrolyze, and is reversed and restored upon addition of bases and acids. Acids generated by irradiating a photoacid generator or sonicating chlorinated solvents also induced nanotube assembly, allowing these nanostructures to be coupled to diverse stimuli, and, once assembled, they can be fixed permanently by cross-linking their pendant alkenes. As large macrocyclic chromonic liquid crystals, these iminium salts are easily accessible through a modular design and provide a means to rationally synthesize structures that mimic the morphology and rheology of carbon nanotubes and biological tubules.

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