scholarly journals Development of Paper Actuators Based on Carbon-Nanotube-Composite Paper

Molecules ◽  
2021 ◽  
Vol 26 (5) ◽  
pp. 1463
Author(s):  
Takahiro Ampo ◽  
Takahide Oya
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Carbon Nanotube ◽  
Carbon Powder ◽  
High Electrical Conductivity ◽  
Soft Actuator ◽  
Highly Efficient ◽  
Semiconducting Properties ◽  
Carbon Nanotube Composite ◽  
Composite Paper

We propose a unique soft actuator—a paper actuator—based on carbon-nanotube-composite paper (CNT-composite paper), which is a composite of carbon nanotubes (CNTs) and paper. CNT-composite paper has highly efficient properties because of the contained CNTs, such as high electrical conductivity and semiconducting properties. We are considering using CNT-composite paper for various devices. In this study, we successfully developed a paper actuator. We determined the structure of the paper actuator by referencing that of bucky-gel actuators. The actuator operates using the force generated by the movement of ions. In addition to making the paper actuator, we also attempted to improve its performance, using pressure as an index and an electronic scale to measure the pressure. We investigated the optimal dispersant for use in paper actuators, expecting the residual dispersant on the CNT-composite paper to affect the performance differently depending on the type of dispersant. Referring to research on bucky-gel actuators, we also found that the addition of carbon powder to the electrode layers is effective in improving the pressure for paper actuators. We believe that the paper actuator could be used in various situations due to its ease of processing.

Freestanding CoSeO3·H2O nanoribbon/carbon nanotube composite paper for 2.4 V high-voltage, flexible, solid-state supercapacitors

Nanoscale ◽  
2018 ◽  
Vol 10 (25) ◽  
pp. 12003-12010 ◽  
Author(s):  
Yingchang Jiang ◽  
Zeyi Wu ◽  
Le Jiang ◽  
Zhichang Pan ◽  
Peiyu Yang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Solid State ◽  
Energy Density ◽  
High Voltage ◽  
High Energy ◽  
High Energy Density ◽  
Carbon Nanotube Composite ◽  
Composite Paper

Freestanding paper consisting of ultrathin CoSeO3·H2O nanoribbons and carbon nanotubes fabricated by a vacuum-assisted filtration strategy exhibits 2.4 V high-voltage, high energy density and excellent flexibility for solid-state supercapacitors.

scholarly journals Fabrication of Aligned-Carbon-Nanotube-Composite Paper with High and Anisotropic Conductivity

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Yuki Fujitsuka ◽  
Takahide Oya
Keyword(s):  
Electrical Conductivity ◽  
Carbon Nanotube ◽  
Surface Resistance ◽  
Anisotropic Conductivity ◽  
Conductive Material ◽  
Ac Field ◽  
Carbon Nanotube Composite ◽  
Paper Fibers ◽  
Functional Paper ◽  
Composite Paper

A functional carbon-nanotube (CNT)-composite paper is described in which the CNTs are aligned. This “aligned-CNT composite paper” is a flexible composite material that has CNT functionality (e.g., electrical conductivity) despite being a paper. An advanced fabrication method was developed to overcome the problem of previous CNT-composite papers, that is, reduced conductivity due to random CNT alignment. Aligning the CNTs by using an alternating current (AC) field was hypothesized to increase the electrical conductivity and give the paper an anisotropic characteristic. Experimental results showed that a nonionic surfactant was not suitable as a CNT dispersant for fabricating aligned-CNT composite paper and that catechin with its six-membered rings and hydrophilic groups was suitable. Observation by scanning electron microscopy of samples prepared using catechin showed that the CNTs were aligned in the direction of the AC field on the paper fibers. Measurement of the electric conductivity showed that the surface resistance was different between the direction of the aligned CNTs (high conductivity) and that of verticality (low). The conductivity of the aligned-CNT-composite paper samples was higher than that of nonaligned samples. This unique and functional paper, which has high and anisotropic conductivity, is applicable to a conductive material to control the direction of current.

High electrical conductivity of double-walled carbon nanotube fibers by hydrogen peroxide treatments

2016 ◽  
Vol 4 (1) ◽  
pp. 74-82 ◽  
Author(s):  
A. Morelos-Gómez ◽  
M. Fujishige ◽  
S. Magdalena Vega-Díaz ◽  
I. Ito ◽  
T. Fukuyo ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Hydrogen Peroxide ◽  
Electrical Resistivity ◽  
Carbon Nanotube ◽  
Small Diameter ◽  
High Electrical Conductivity ◽  
Carbon Nanotube Fibers ◽  
Fiber Sample

H2O2treatment can decrease the electrical resistivity of double walled carbon nanotube fibers. The experimental observations suggest that small diameter carbon nanotubes are removed from the fiber sample.

Supramolecular electrospun nanofibers with high conductivity at ultra-low carbon nanotube content

2016 ◽  
Vol 4 (23) ◽  
pp. 5207-5213 ◽  
Author(s):  
Chih-Chia Cheng ◽  
Yeh-Sheng Wang ◽  
Jem-Kun Chen ◽  
Duu-Jong Lee
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Carbon Nanotube ◽  
Electrospun Nanofibers ◽  
High Conductivity ◽  
Supramolecular Polymers ◽  
Low Carbon ◽  
High Electrical Conductivity ◽  
Align Carbon Nanotubes

Supramolecular polymers can be used to manipulate and align carbon nanotubes (CNTs) in a nanofiber matrix, resulting in high electrical conductivity at ultra-low CNT content.

Electrical conductivity and electromagnetic interference shielding efficiency of carbon nanotube/cellulose composite paper

Carbon ◽  
2008 ◽  
Vol 46 (9) ◽  
pp. 1256-1258 ◽  
Author(s):  
Bunshi Fugetsu ◽  
Eiichi Sano ◽  
Masaki Sunada ◽  
Yuzuru Sambongi ◽  
Takao Shibuya ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Carbon Nanotube ◽  
Electromagnetic Interference ◽  
Electromagnetic Interference Shielding ◽  
Cellulose Composite ◽  
Composite Paper

Mechanical Properties Of Polyaniline / Multi-walled Carbon Nanotube Composite Films

2003 ◽  
Vol 791 ◽  
Author(s):  
P. C. Ramamurthy ◽  
W. R. Harrell ◽  
R. V. Gregory ◽  
B. Sadanadan ◽  
A. M. Rao
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Composite Films ◽  
Weight Percent ◽  
Organic Electronic Devices ◽  
Multiwalled Carbon ◽  
Multi Walled Carbon Nanotube ◽  
Contact Devices ◽  
Carbon Nanotube Composite

ABSTRACTHigh molecular weight polyaniline / multi-walled carbon nanotube composite films were fabricated using solution processing. Composite films with various weight percentages of multiwalled carbon nanotubes were fabricated. Physical properties of these composites were analyzed by thermogravimetric analysis, tensile testing, and scanning electron microscopy. These results indicate that the addition of multiwalled nanotubes to polyaniline significantly enhances the mechanical properties of the films. In addition, metal–semiconductor (composite) (MS) contact devices were fabricated, and it was observed that the current level in the films increased with increasing multiwalled nanotube content. Furthermore, it was observed that polyaniline containing one weight percent of carbon nanotubes appears to be the most promising composition for applications in organic electronic devices.

Nanoelectromagnetic of the N-doped single wall carbon nanotube in the extremely high frequency band

Nanoscale ◽  
2017 ◽  
Vol 9 (37) ◽  
pp. 14192-14200 ◽  
Author(s):  
B. Aïssa ◽  
M. Nedil ◽  
J. Kroeger ◽  
M. I. Hossain ◽  
K. Mahmoud ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Carbon Nanotube ◽  
Frequency Band ◽  
Electromagnetic Interference ◽  
High Frequency ◽  
High Electrical Conductivity ◽  
High Frequency Band ◽  
High Demand ◽  
Extremely High Frequency ◽  
Minimal Thickness

Materials offering excellent mechanical flexibility, high electrical conductivity and electromagnetic interference (EMI) attenuation with minimal thickness are in high demand, particularly if they can be easily processed into films.

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