Resulting nanotube bundles carbon nanotube nanotubes carbon. Medical search. Frequent questions

Carbon nanotube chemistry involves chemical reactions, which are used to modify the properties of carbon nanotubes (CNTs). (wikipedia.org)
The purification and oxidation of carbon nanotubes (CNTs) has been well represented in literature. (wikipedia.org)
This chapter presents the results of experimental studies of the electrical, mechanical and geometric parameters of vertically aligned carbon nanotubes (VA CNTs) using scanning probe microscopy (SPM). (intechopen.com)
The proposed techniques allow to overcome the difficulties associated with the vertical orientation and high aspect ratio of nanotubes in determining the electrical and mechanical parameters of the VA CNTs by standard methods. (intechopen.com)
Several alternative reactions have already been created for the chemical substance functionalization of CNTs including radical improvements via diazonium salts alkyl or aryl peroxides carbene or nitrene cycloadditions aswell as electrophilic and nucleophilic addition reactions.14 15 However due to the relatively low reactivities from the pristine carbon components these reaction often require lengthy reaction moments at elevated temperatures. (researchatlanta.org)
The efficient heating system and milder response conditions generally bring about quicker kinetics higher response produces and lower side items when compared with the traditional heating system protocol.16 17 Microwave rays in addition has been successfully found in the procedure for the chemical substance modification of CNTs and fullerenes.9 18 Organic azides give a attractive functionalization method linked to carbon nanomaterials particularly. (researchatlanta.org)
The TEM picture shows huge ropes that have been bundled nanotubes aswell as dark contaminants that were mainly residual catalysts covered with amorphous carbon (Shape 1A).33 35 To eliminate these impurities chemical oxidation and physical purification methods are used to purify as-prepared CNTs. (researchatlanta.org)
2012). Therefore, graphene based materials, including 0D fullerenes (zero-dimensional fullerenes), 1D CNTs (one-dimensional carbon nanotubes), and 2D/3D GR (two-dimensional/three- dimensional graphene), are of particular interest because of their unique structures and exceptional electrical and mechanical properties (Allen et al . (aaqr.org)
A new polymeric amphiphilic molecule for dispersing carbon nanotubes (CNTs) in water, oligothiophene-terminated poly(ethylene glycol) (TN-PEG), was synthesized and its ability to stabilize aqueous CNT dispersions was examined by UV-Vis spectroscopy and transmission electron microscopy. (korea.ac.kr)
So researchers from Dankook University in Korea and University College London have tried using carbon nanotubes (CNTs) to repair damaged nerves instead [Ahn, H.-S., et al. (materialstoday.com)
Led by Hae-Won Kim and Jung Keun Hyun, the researchers made bundles of aligned phosphate glass fibers (PGF) with tethered on carboxylated CNTs. (materialstoday.com)
The team implanted the CNT-PGF scaffold into the severed sciatic nerve in the hip of test rats and compared the results to a PGF control scaffold without CNTs. (materialstoday.com)
In spite of several researches to synthesize carbon nanotubes (CNTs) on carbon fiber (CF), most have obtained entangled nanotubes versus the aligned form. (upm.edu.my)
The current excitement in carbon nanotubes (CNTs) was triggered by Sumio Iijima's Nature publication in 1991 [ 1 ]. (springer.com)
Copper was found to fill the pores between CNT bundles from Focused Ion Beam (FIB) cut cross-sections confirming that aqueous based electrolytes can fill micropores between as-spun CNTs in a fiber network. (aalto.fi)
In order to further enhance adhesion and alleviate the mismatches, several studies have been conducted on nano-modified epoxies employing mainly graphitic structures like carbon nano tubes (CNTs) [4 - 8] . (graphyonline.com)
Apart from the improved adhesion, CNTs can also reduce the ingress of water in the epoxy due to their hydrophobic nature and the water affected specific area resulting in more tortuous paths for the absorption and diffusion of water, thus, further enhancing the performance of the joint structure [9 - 11] . (graphyonline.com)
It is hypothesized that application of electric current will enhance their osteogenic differentiation, and addition of conductive carbon nanotubes (CNTs) to the cell substrate will provide increased efficiency in current transmission. (hindawi.com)
This work characterized airborne particles that were generated from the weighing of bulk, multi- wall carbon nanotubes (CNTs) and the manual sanding of epoxy test samples reinforced with CNTs. (cdc.gov)
Carbon nanotubes (CNTs) can be incorporated into polymeric materials to form nanocomposite materials. (cdc.gov)

Yu, M.-F., 2004, Fundamental mechanical properties of carbon nanotubes: Current understanding and the related experimental studies, J. Eng. (ac.rs)

abstract = "Single-walled carbon nanotube bundles have the potential to provide an attractive solution for the resistivity and electromigration problems faced by traditional copper interconnect. (edu.sa)

A "sliced and unrolled" representation of a carbon nanotube as a strip of a graphene molecule, overlaid on diagram of the full molecule (faint background). (wikipedia.org)
In the study of nanotubes, one defines a zigzag path on a graphene-like lattice as a path that turns 60 degrees, alternating left and right, after stepping through each bond. (wikipedia.org)
A multiwall carbon nanotube/graphene (MWCNT/GR) composite was synthesized for an enhanced supercapacitor. (aaqr.org)
2013). However, these electrodes have lower volume capacitance than conventional activated carbon electrodes due to the severe stacking of graphene in the electrode. (aaqr.org)
namely, we fabricated HPLC columns coated with bundled-SWNTs, isolated-SWNTs or graphene as the stationary HPLC phase, and discovered that polycyclic aromatic hydrocarbons having a one-dimensional shape, such as p-terphenyl and anthracene, exhibit an unusually high affinity to the bundled SWNTs compared to that of the isolated SWNTs. (elsevierpure.com)
Carbon nanotubes are fullerene-related structures which consist of graphene cylinders closed at either end with caps containing pentagonal rings. (glgoo.top)

[11] These properties are expected to be valuable in many areas of technology, such as electronics , optics , composite materials (replacing or complementing carbon fibers ), nanotechnology , and other applications of materials science . (wikipedia.org)
Extensive physicochemical characterization, including prevalence and forms of bundled agglomerates (or assembled CNT/F structures) were also characterized because exposure assessment indicated that agglomerates, not singlets or individual fibers, are the most common form found in workers' personal breathing zone samples. (cdc.gov)
Scientists describe in a new study how they constructed elastic conducting fibers by wrapping lighter-than-air, electrically conductive sheets of tiny carbon nanotubes to form a jelly-roll-like sheath around a long rubber core. (sciencedaily.com)
For example, when conventional fibers are stretched, the resulting increase in length and decrease in cross-sectional area restricts the flow of electrons through the material. (sciencedaily.com)
One key to the performance of the new conducting elastic fibers is the introduction of buckling into the carbon nanotube sheets. (sciencedaily.com)
We make the inelastic carbon nanotube sheaths of our sheath-core fibers super stretchable by modulating large buckles with small buckles, so that the elongation of both buckle types can contribute to elasticity. (sciencedaily.com)
By adding a thin overcoat of rubber to the sheath-core fibers and then another carbon nanotube sheath, the researchers made strain sensors and artificial muscles in which the buckled nanotube sheaths serve as electrodes and the thin rubber layer is a dielectric, resulting in a fiber capacitor. (sciencedaily.com)
Adding twist to these double-sheath fibers resulted in fast, electrically powered torsional -- or rotating -- artificial muscles that could be used to rotate mirrors in optical circuits or pump liquids in miniature devices used for chemical analysis, said Dr. Carter Haines BS'11, PhD'15, a research associate in the NanoTech Institute and an author of the paper. (sciencedaily.com)
Here we report the fabrication of highly stretchable (up to 1320%) sheath-core conducting fibers created by wrapping carbon nanotube sheets oriented in the fiber direction on stretched rubber fiber cores. (unicamp.br)

Multi-walled carbon nanotubes ( MWCNTs ) consist of nested single-wall carbon nanotubes [1] in a nested, tube-in-tube structure. (wikipedia.org)
In this current series of studies [10], with guidance from extensive facility exposure assessments, we selected six multi-walled carbon nanotubes (MWCNT) and two carbon nanofibers (CNF), collectively termed CNT/F, either manufactured or handled by U.S. companies, to evaluate four primary parameters of toxicity. (cdc.gov)
Iijima analysed the deposit on the cathode and found macroscopic amounts of multi-walled carbon nanotubes (MWNTs) and facetted graphitic particles. (springer.com)
C-CVD grown Multi-Walled Carbon Nano-tubes (MWCNTs) as reinforcement have shown excellent mechanical, thermal properties as long as homogeneously dispersed in the matrix (polymer, epoxy and etc. (ommegaonline.org)
Quality of well-dried functionalized multi-walled carbon nano-tubes (F-VFD MWCNTs) can be estimated as well in creating well-oriented nano composite. (ommegaonline.org)

Structural evolution of the zigzag carbon nanotube bundle subjected to biaxial lateral compression with the subsequent shear straining is studied under plane strain conditions using the chain model with a reduced number of degrees of freedom. (ac.rs)

A carbon nanotube ( CNT ) is a tube made of carbon with a diameter in the nanometer range ( nanoscale ). (wikipedia.org)
In bundles, the heat cannot dissipate as quickly and the result is "an explosion on the nanoscale," Panchapakesan said. (medgadget.com)
But because of the way carbon nanotubes are grown - in sparse nanoscale "forests" where carbon molecules compete for growth-inducing catalysts - scientists have been unable to successfully grow tightly packed bundles. (nanowerk.com)
Nanotubes could eventually be used as hydrogen energy storage devices, gas detectors, biochemical markers, nanoscale tweezers, or as a building material for car and plane bodies, according to the researchers. (trnmag.com)

By burning away a scaffold of carbon nanotubes, engineers have been able to produce a forest of aligned boron nitride nanotubes. (materialstoday.com)
The toxicity of boron nitride nanotubes (BNNTs) has been the subject of conflicting reports, likely due to differences in the residuals and impurities that can make up to 30-60% of the material produced based on the manufacturing processes and purification employed. (cdc.gov)
Boron nitride nanotubes (BNNT) are produced by many different methods leading to variances in physicochemical characteristics and impurities in the final product. (cdc.gov)

Single-walled carbon nanotubes ( SWCNTs ) have diameters around 0.5-2.0 nanometers , about 100,000 times smaller than the width of a human hair. (wikipedia.org)
Within this study, we report on the underlying mechanisms of such network formation utilizing single-walled carbon nanotubes (SWCNTs) in low- and high-density polyethylene matrices. (uni-lj.si)
Field emission properties of single-walled carbon nanotubes (SWCNTs), which were prepared through alcohol catalytic chemical vapor deposition for 10-60s, were characterized in a diode configuration. (elsevierpure.com)
Single-walled carbon nanotubes (SWCNTs) in their pristine form have high thermal conductivity whose further improvement has attracted a lot of interest. (lboro.ac.uk)
All the three methods consistently predict a reduction of the thermal conductivity of (10,10) SWCNT upon C60 encapsulation by 20% - 30%, in agreement with experimental results on bundles of SWCNTs. (lboro.ac.uk)

Outcomes and Dialogue As-prepared SWNTs are often contaminated with a Doxercalciferol number of pollutants including residual metallic catalysts and carbonaceous pollutants such as for example amorphous carbon and carbon nanoparticles.33 The amount of contamination as well as the percent impurity vary with regards to the preparation method as well as the manufacturers. (researchatlanta.org)
This time, a new form of carbon nanotube, namely, single-walled carbon nanotubes (SWNTs) with diameters between 1.1 and 1.3 nm were obtained [ 4 ]. (springer.com)

The reinforcing and conductive performance of carbon nanotube polymer-based nanocomposites depends on the established network and its configuration. (uni-lj.si)

For the first time, single wall carbon nanotubes are produced as a perfect bulk material, he said. (trnmag.com)
Airborne single-wall carbon nanotubes long, straight fiber. (cdc.gov)
Single-wall carbon nanotubes applications. (cdc.gov)

Pristine multiwall carbon nanotubes (MWNT) (synthesised using CVD approach) and poly[2-methoxy-5-(20-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH PPV) based composites were prepared using a solution blending approach by employing various nanotube weight fractions. (csircentral.net)

Carbon nanotubes modified with acyl chloride react readily with highly branched molecules such as poly(amidoamine), which acts as a template for silver ion and later being reduced by formaldehyde. (wikipedia.org)

The results showed the effective influence of functionalization (unlocking) on the interfacial interaction between MWCNTs and isophthalic polyester resin which obtained after performing vacuum-freezing dry method. (ommegaonline.org)
As known, pristine MWCNTs have poor disperse ability in the polyester or even epoxy because of their bundled and tangled structure originated from strong Van der Waals forces, which become a barrier in way to reach the high level of physical properties. (ommegaonline.org)
Prof. Rod Ruoff's group realized such challenging tests on individual multiwalled carbon nanotubes (MWCNTs) using a testing stage based on a nanomanipulation tool operating inside a SEM. (imechanica.org)

Both electrodes are prepared via a slurry casting method containing the active material powder mixed with a binder polymer such as polyvinylidene fluoride (PVDF) and carbon black as a conductive agent. (aip.org)
Moreover, the theory successfully explains SWCNT bundle behavior as a Brownian entity and predicts network formation through diminishing thermo- and hydro-dynamically driven diffusion, which can be manipulated during the production to enhance reinforcing/conductive functionality of such materials. (uni-lj.si)
Coating electrodes with conductive polymers or carbon nanotubes offers a substantial increase in charge transfer area compared to conventional platinum electrodes. (frontiersin.org)

Bundle morphology and adsorptive contributions from nanotubes and impurities are studied both experimentally and by simulation using a computer-aided methodology, which employs a small physisorbed probe molecule to explore the porosity of nanotube samples. (illinois.edu)
The degree of closure between experimental and calculated adsorption isotherms for samples manufactured by two different methods, to provide different nanotube morphology and contamination level, further strengthens the validity and resulting interpretations based on the proposed approach. (illinois.edu)
Activated fiber surface originated from acid treatment, compact coverage of catalyst precursor via applying ultrasonication in appropriate solvent, followed by calcinating were effective parameters which resulted in growing bundles and vertically aligned CNT on CF. Ethanol and acetone were examined as solvent thereby spot catalyst coating was created from the former while film coverage produced from the later and resulted in distinctive CNT morphology. (upm.edu.my)
Emitter morphology resulting in improved field emission properties is a crucial factor for the fabrication of SWCNT-electron sources. (elsevierpure.com)
as a result, the role of particle morphology on the droplet size and the ability to fine tune the initial toxicological response is largely unknown. (cdc.gov)

The initial development of carbon nanotube synthesis revolved heavily around the use of 3 d valence transition metals such as Fe, Ni, and Co. More recently, noble metals (e.g. (springer.com)
These different growth systems are briefly examined in this article and serve to highlight the breadth of avenues available for carbon nanotube synthesis. (springer.com)
In addition, it highlighted the use of transition metals as catalysts for carbon nanotube synthesis. (springer.com)
Maynard 2005, 2006 ), material synthesis (Nakaso that electrospray from a suspension of higher nanotube et al. (cdc.gov)

A recently published article in the journal Particle and Fibre Toxicology [10], " Physicochemical characterization and genotoxicity of the broad class of carbon nanotubes and nanofibers used or produced in U.S. facilities" addresses this issue. (cdc.gov)

Lu's team discovered that by immersing vertically grown carbon nanotube bundles into a liquid organic solvent and allowing them to dry, the nanotubes pull close together into a dense bundle. (nanowerk.com)
The results can be used in the development of diagnostic methods as well as in nanoelectronics and nanosystem devices based on vertically aligned carbon nanotubes (memory elements, adhesive structures, nanoelectromechanical switches, emission structures, etc. (intechopen.com)

These processes were essential for low yield production of carbon nanotubes where carbon particles, amorphous carbon particles and coatings comprised a significant percentage of the overall material and are still important for the introduction of surface functional groups. (wikipedia.org)
The epoxy coating was used both as received and as reinforced with various carbon fillers i.e. carbon nano-tubes, amorphous graphite or a combination of them. (graphyonline.com)

We investigate the adsorption kinetics of gases on the exterior of a carbon nanotube bundle by monitoring the uptake and exchange of particles in regions of the surface characterized by different binding energies. (aps.org)
Adsorption of Helium and Hydrogen on bundles of single walled carbon nanotubes (SWCNs) has been studied via heat capacity and volumetric isotherm measurements. (washington.edu)
Grand canonical Monte Carlo simulation of nitrogen adsorption on localized sites of a bundle is carried out to predict adsorption in its accessible internal pore volume and on its external surface as a function of tube diameter. (illinois.edu)
External adsorption is split into the contributions from the clean surface of the outermost nanotubes of the bundle and from the surface of the impurities. (illinois.edu)
The structural parameters of the sample, such as the fraction of open-ended nanotubes and the contributions from impurities and nanotube bundles to total external surface area, are determined by fitting the experimental nitrogen adsorption data to the simulated isotherm. (illinois.edu)
Molecular adsorption onto carbon nanotube surfaces is one of the important topics in the science and technology of carbon nanotubes due to their specific 1D structures with very high aspect ratios. (elsevierpure.com)

Engineered nanomaterials, such as carbon nanotubes and nanofibers (CNT/F), hold great promise for society by revolutionizing many industries with applications from medicine to manufactured composites. (cdc.gov)
Because the rubber core is stretched along its length as the sheets are being wrapped around it, when the wrapped rubber relaxes, the carbon nanofibers form a complex buckled structure, which allows for repeated stretching of the fiber. (sciencedaily.com)
Workplace exposure assessment of BNNT from two manufacturing facilities measured boron concentrations in personal breathing zones from non-detectable to 0.95g/m3 and TEM structure counts of 0.0123 0.0094 structures/cm3, concentrations well below what was found with other engineered high aspect ratio nanomaterials like carbon nanotubes and nanofibers. (cdc.gov)

The resulting nanotube bundles or aggregates reduce the mechanical performance of the final composite. (wikipedia.org)
This method allows us to accurately estimate the concentration of these resuspended carbon nanotubes, after removing bundles and micrometric aggregates, which can be used as a calibration standard, for dosage-dependent studies in biological systems. (unican.es)

Other potential applications of the densified nanotubes are high surface area electrodes for supercapacitors, fuel cell electrodes for hydrogen storage, heat dissipation materials for thermal conductors, and other situations that require high electrical, thermal, or mechanical performance. (nanowerk.com)

This paper was accepted for publication in the journal Carbon and the definitive published version is available at https://doi.org/10.1016/j.carbon.2020.01.114. (lboro.ac.uk)

Currently, carbon-based materials, such as carbon nanotube (Frackowiak and Beguin, 2002), activated carbon (Zhu et al . (aaqr.org)

Carbon nanotubes have been deposited on with silver nanoparticles with the aid of amination reactions. (wikipedia.org)
Amide functionalized carbon nanotubes have been shown to chelate silver nanoparticles. (wikipedia.org)
The extremely small dimensions of nanobuilding blocks (for instance, nanoparticles, nanotubes, and nanowires) have imposed great challenges to many existing instruments, methodologies, and even theories. (imechanica.org)

These results indicated that grooves with one-dimensional structures formed by the SWNT-bundles provide a favorable spatial geometry for the specific molecular recognition of aromatic hydrocarbons. (elsevierpure.com)

Moreover, the excitement at that time in carbon nanostructures, born out of the discovery of fullerenes [ 3 ] was a further favourable factor and so his publication drew significant attention. (springer.com)

The zigzag and armchair configurations are not the only structures that a single-walled nanotube can have. (wikipedia.org)

Although covalent modifications are very stable, the bonding process disrupts the sp2 hybridization of the carbon atoms because a σ-bond is formed. (wikipedia.org)
The structure of an ideal (infinitely long) single-walled carbon nanotube is that of a regular hexagonal lattice drawn on an infinite cylindrical surface, whose vertices are the positions of the carbon atoms. (wikipedia.org)
Since the length of the carbon-carbon bonds is fairly fixed, there are constraints on the diameter of the cylinder and the arrangement of the atoms on it. (wikipedia.org)
The catalyst causes the buckyballs, soccer-ball shaped molecules made of 60 carbon atoms, to unzip and form nanotubes. (trnmag.com)

Using a two-electrode testing system, the electrochemical results demonstrate that the MWCNT/GR (weight ratio = 0.1) electrode has a capacitance of 192 F g -1 and an excellent rate of capacity retention (88% at 4 A g -1 ). (aaqr.org)
Electrochemical deposition of copper on a carbon nanotube (CNT) fiber from a copper sulfate - sulfuric acid bath was studied in order to produce a carbon nanotube-copper composite wire. (aalto.fi)

According to the results, we found out that effect of drying temperature is one of the critical factors to obtain less damaged and strong bondable nano-tubes regardless of matrix thereby to improve mechanical and thermal properties of nano-composites in advance. (ommegaonline.org)

Since the tubes are perfectly crystalline, they are also stronger, smoother, lighter and more flexible than regular carbon nanotubes, said James Gimzewski, who was on the IBM research team and is currently a chemistry professor at the University of California at Los Angeles. (trnmag.com)
If this synthetic method can produce [a] large yield of nanotube single crystals these nanotube single crystals will have tremendous potential for fundamental research, said Peidong Yang, assistant professor of chemistry at the University of California at Berkeley. (trnmag.com)

It was observed that the TN-PEGs were strongly adsorbed onto the nanotube surface via a strong π-π interaction, and thus only gentle sonication causes exfoliation of CNT ropes and bundles into well-separated individual objects and small bundles comprising 2-10 tubes. (korea.ac.kr)

Van Der Waals forces, the same molecular bonds that boost the adhesion of millions of setae on gecko toes and help the lizard defy gravity, ensure the nanotubes retain their tightly packed form. (nanowerk.com)
Our preliminary results suggest that only direct van der Waals interactions among large bundles seem not to be enough to explain the yarn drawing process. (unicamp.br)
Modification of carbon nano-tubes is the base steps to prepare the surface microstructure to strong bonding with matrix thereby decouple bundled nano-tubes due to Vander Waals interactions. (ommegaonline.org)
Because, electrostatic and Van der Waals forces cause that agglomeration of the nano-tubes in bundles and entanglements. (ommegaonline.org)

The use of metal catalysts and filamentous carbon from vapour-based routes has a long history dating back well before Iijima's landmark work, perhaps even as far back as 1889 [ 6 ]. (springer.com)

After the oxidation reaction in acidic solution, treatment with hydrogen peroxide limited the damage on the carbon nanotube network. (wikipedia.org)

The turnon voltage is also found to be reduced in the case of polymer-nanotube composite system as compared to the pristine polymer system. (csircentral.net)

Bundle interconnectors (such as small bundles connecting large bundles) were observed to play a critical role in our simulations. (unicamp.br)

During acid oxidation, the carbon-carbon bonded network of the graphitic layers is broken allowing the introduction of oxygen units in the form of carboxyl, phenolic and lactone groups, which have been extensively exploited for further chemical functionalisation. (wikipedia.org)

The low value of t is attributed to the aggregation and bundling of nanotubes in the prepared composites, as is evident from SEM and AFM micrographs. (csircentral.net)

Polymer-coated Carbon Nanotube (CNT) tissues are very flexible and lightweight and have high potential as an anode material for flexible Li-ion microbatteries. (aip.org)
The higher capacity of the SPAPE-coated CNT tissue is attributed to the increased surface area and the improved quality of the electrode/electrolyte interfaces between the nanotubes and the polymer electrolyte. (aip.org)

These tightly packed bundles are efficient conductors and could one day replace copper as the primary interconnects used on computer chips and even hasten the transition to next-generation 3-D stacked chips. (nanowerk.com)
It's a significant and critical step toward the realization of carbon nanotube interconnects with better performance than copper," Lu said of his research findings. (nanowerk.com)
Densified carbon nanotubes, with their ends trimmed and polished, can be the basic building blocks for interconnects that would link the stacked layers of a 3-D computer chip, Lu said. (nanowerk.com)
Carbon nanotubes are one of the most promising materials for interconnects in 3-D integration," he said. (nanowerk.com)

Separating the two basic types of nanotubes - semiconductors and metals - is usually an arduous task. (trnmag.com)

We show that preliminary experimental results for CF$_{4}$, Ar, and CH$_{4 }$on nanotube bundles with closed ends are consistent with our results. (aps.org)
Based on recent experimental results, we model the affect of nanotube diameter on contact and ohmic resistance. (edu.sa)
The overall outcome of the experimental results, indicate that with further research, acoustic emission can be employed as an Aluminum Corrosion Monitoring tool. (graphyonline.com)

All-carbon systems for carbon nanotube growth without any catalytic particles have also been demonstrated. (springer.com)
In the case of noble metal catalyst particles, at temperatures where the VLS model is expected to be valid, they exhibit very low carbon solubility and negligible carbide formation. (springer.com)

Researchers at IBM have come up with an efficient method to make uniform metallic nanotubes. (trnmag.com)

By including other rubber and carbon nanotube sheath layers, we demonstrated strain sensors generating an 860% capacitance change and electrically powered torsional muscles operating reversibly by a coupled tension-to-torsion actuation mechanism. (unicamp.br)

Close packed carbon nanotube bundles are materials with highly deformable elements, for which unusual deformation mechanisms are expected. (ac.rs)
Despite the fact that it has been almost ten years since yarns were first drawn, there are still controversies on the mechanisms and necessary conditions that can produce yarns and sheets drawn from carbon nanotube forests. (unicamp.br)

In, Pb) have been shown to also yield carbon nanotubes. (springer.com)

A new mechanism of carbon nanotube bundle shear deformation through cooperative, vortex-like displacements of nanotube cross sections is reported. (ac.rs)

The resulting composite was found to have specific conductivity similar to that of pure copper i.e. 98% of copper with 0.2 w-% of CNT, exhibiting a ninefold increase from the pure CNT fiber. (aalto.fi)
The basic idea is to create ideal nano-composite material, where carbon nano-tubes properties transferred to a polymeric matrix to make a strong bond. (ommegaonline.org)
Analysis of these optical and electrical properties is important before utilising the composite in organic electronics applications, in order to obtain more scientifically correct and repeatable results with fabricated devices. (csircentral.net)

The high resistivity of the aerogel-spun fiber causes a non-uniform current distribution during deposition, which results in a drastic drop in the copper nuclei population density as sufficient overpotential is not available beyond a certain distance from the current feed point. (aalto.fi)

Baltzis D, Evaggelou O, Lekatou AG, Paipetis AS (2018) Acoustic Emission Feasibility Study for Carbon Epoxy Coated Aluminum Corrosion Monitoring. (graphyonline.com)
In the present effort, acoustic emission was applied during potentiodynamic cyclic polarization testing on as received, anodized and carbon epoxy coated aluminum substrates in order to correlate corrosion phenomena, like oxide layer development and localized corrosion, with characteristic acoustic emission signal descriptors. (graphyonline.com)

Below [phi]v,crit, the bundles behave as individual units and may align in the flow direction. (uni-lj.si)

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