Super-high-frequency shielding properties of excimer-laser-synthesized-single-wall-carbon-nanotubes/polyurethane nanocomposite films

We report for the first time the production of single wall carbon nanotubes (SWCNTs) by KrF excimer laser ablation method under the krypton gas atmosphere. For the ablation experiment 450 mJ energy and 30 Hz repetition rate KrF excimer laser was used, and the target was prepared with the following composition: 0.6% Ni, 0.6% Co, and 98.8% C (atomic percentage). The ablation product was characterized by confocal Raman microspectroscopy, transmission electron microscopy (TEM), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). The SWCNTs obtained are a mixture of semiconducting and metallic types with narrow diameters distribution of 1.26 to 1.49 nm, are micrometers long, and contain low amount of graphite and amorphous carbon.

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Synthesis of single-wall carbon nanotubes by excimer laser ablation

Surface Engineering and Applied Electrochemistry ◽

10.3103/s106837551404005x ◽

2014 ◽

Vol 50 (4) ◽

pp. 294-299 ◽

Cited By ~ 6

Author(s):

P. M. Bota ◽

D. Dorobantu ◽

I. Boerasu ◽

D. Bojin ◽

M. Enachescu

Keyword(s):

Carbon Nanotubes ◽

Laser Ablation ◽

Excimer Laser ◽

Single Wall Carbon Nanotubes ◽

Single Wall Carbon ◽

Excimer Laser Ablation

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Production of single-wall carbon nanotubes by a XeCl excimer laser ablation

Thin Solid Films ◽

10.1016/j.tsf.2005.08.037 ◽

2006 ◽

Vol 506-507 ◽

pp. 255-258 ◽

Cited By ~ 27

Author(s):

Mitsuhiro Kusaba ◽

Yoshiaki Tsunawaki

Keyword(s):

Carbon Nanotubes ◽

Laser Ablation ◽

Excimer Laser ◽

Single Wall Carbon Nanotubes ◽

Single Wall Carbon ◽

Excimer Laser Ablation ◽

Xecl Excimer Laser

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Flexible thermoelectric films formed using integrated nanocomposites with single-wall carbon nanotubes and Bi2Te3 nanoplates via solvothermal synthesis

Scientific Reports ◽

10.1038/s41598-020-73808-4 ◽

2020 ◽

Vol 10 (1) ◽

Author(s):

Hayato Yabuki ◽

Susumu Yonezawa ◽

Rikuo Eguchi ◽

Masayuki Takashiri

Keyword(s):

Carbon Nanotubes ◽

Electrical Conductivity ◽

Solvothermal Synthesis ◽

High Performance ◽

Nanocomposite Films ◽

Single Wall Carbon Nanotubes ◽

High Electrical Conductivity ◽

Single Wall Carbon ◽

Maximum Power Factor ◽

Flexible Thermoelectric

Abstract Single-wall carbon nanotubes (SWCNTs) and Bi2Te3 nanoplates are very promising thermoelectric materials for energy harvesting. When these two materials are combined, the resulting nanocomposites exhibit high thermoelectric performance and excellent flexibility. However, simple mixing of these materials is not effective in realizing high performance. Therefore, we fabricated integrated nanocomposites by adding SWCNTs during solvothermal synthesis for the crystallization of Bi2Te3 nanoplates and prepared flexible integrated nanocomposite films by drop-casting. The integrated nanocomposite films exhibited high electrical conductivity and an n-type Seebeck coefficient owing to the low contact resistance between the nanoplates and SWCNTs. The maximum power factor was 1.38 μW/(cm K2), which was 23 times higher than that of a simple nanocomposite film formed by mixing SWCNTs during drop-casting, but excluding solvothermal synthesis. Moreover, the integrated nanocomposite films maintained their thermoelectric properties through 500 bending cycles.

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