A Simple Method to Make Field Emitter Using Ropes of Single-Walled Carbon Nanotubes

1999 ◽  
Vol 16 (2) ◽  
pp. 117-119 ◽  
Author(s):  
Yu Ding ◽  
Qing-ling Hang ◽  
Hong-zhou Zhang ◽  
Sun-qi Feng ◽  
Zhi-gang Bai ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Single Walled Carbon Nanotubes ◽  
Simple Method ◽  
Field Emitter ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

scholarly journals Simple Method to Improve Electrical Conductivity of Films Made from Single-Walled Carbon Nanotubes

Nanomaterials ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 1113 ◽  
Author(s):  
Bogumiła Kumanek ◽  
Tomasz Wasiak ◽  
Grzegorz Stando ◽  
Paweł Stando ◽  
Dariusz Łukowiec ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Single Walled Carbon Nanotubes ◽  
Simple Approach ◽  
Sonication Time ◽  
Free Standing ◽  
Simple Method ◽  
New Approach ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

Despite the widespread use of sonication for individualization of nanomaterials, its destructive nature is rarely acknowledged. In this study, we demonstrated how exposure of the material to a hostile sound wave environment can be limited by the application of another preprocessing step. Single-walled carbon nanotubes (CNTs) were initially ground in a household coffee grinder, which enabled facile deagglomeration thereof. Such a simple approach enabled us to obtain high-quality CNT dispersion at reduced sonication time. Most importantly, electrical conductivity of free-standing films prepared from these dispersion was improved almost fourfold as compared with unground material eventually reaching 1067 ± 34 S/cm. This work presents a new approach as to how electrical properties of nanocarbon ensembles may be enhanced without the application of doping agents, the presence of which is often ephemeral.

Tuning of the photoluminescence and up-conversion photoluminescence properties of single-walled carbon nanotubes by chemical functionalization

Nanoscale ◽  
2016 ◽  
Vol 8 (38) ◽  
pp. 16916-16921 ◽  
Author(s):  
Yutaka Maeda ◽  
Shun Minami ◽  
Yuya Takehana ◽  
Jing-Shuang Dang ◽  
Shun Aota ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Single Walled Carbon Nanotubes ◽  
Photoluminescence Properties ◽  
Simple Method ◽  
Chemical Functionalization ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

Controlling the distance of the addition site carbons is a simple method for controlling NIR PL and UCPL properties of SWNTs.

Spray coating as a simple method to prepare catalyst for growth of diameter-tunable single-walled carbon nanotubes

Carbon ◽  
2013 ◽  
Vol 64 ◽  
pp. 537-540 ◽  
Author(s):  
Rong Xiang ◽  
Haiqiang Zeng ◽  
Yuquan Su ◽  
Xuchun Gui ◽  
Tianzhun Wu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Spray Coating ◽  
Single Walled Carbon Nanotubes ◽  
Simple Method ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

Dispersions and fibers of carbon nanotubes

2000 ◽  
Vol 633 ◽  
Author(s):  
Brigitte Vigolo ◽  
Alain Pénicaud ◽  
Claude Coulon ◽  
Cédric Sauder ◽  
René Pailler ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Elastic Modulus ◽  
Carbon Fibers ◽  
Sodium Dodecyl ◽  
Single Walled Carbon Nanotubes ◽  
Amphiphilic Polymers ◽  
High Quality ◽  
Simple Method ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

AbstractWe study the phase behavior of single walled carbon nanotubes in aqueous solutions of surfactant molecules or amphiphilic polymers. Homogeneous dispersions can be obtained by using sodium dodecyl sulfate (SDS) in a well-defined concentration range. In contrast, polyvinyl alcohol (PVA) is not efficient at stabilizing the tubes. Carbon nanotubes stick with each other when PVA is added to homogeneous dispersions initially stabilized by SDS. This behavior is the basis of a simple method that we developed to assemble single walled carbon nanotubes into indefinitely long ribbons and fibers. The processing consists of dispersing the nanotubes in SDS solutions, re-condensing the nanotubes in the flow of a PVA solution to form a nanotube mesh, and then collating this mesh to a nanotube fiber. Flow induced alignment may lead to a preferential orientation of the nanotubes in the mesh that has the form of a ribbon. Unlike classical carbon fibers, the nanotube fibers can be strongly bent without breaking. Their obtained elastic modulus is 10 times higher than the modulus of high-quality bucky paper.

Purity Evaluation of Single-Walled Carbon Nanotubes Using Thermogravimetric Analysis

2013 ◽  
Vol 51 (2) ◽  
pp. 137-144
Author(s):  
Naesung Lee ◽  
Jeung Choon Goak ◽  
Tae Yang Kim ◽  
Jongwan Jung ◽  
Young-Soo Seo ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Thermogravimetric Analysis ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Purity Evaluation ◽  
Walled Carbon Nanotubes
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