Development of carbon nanotube-polymer composites with oriented distribution of MWCNTs induced by electric field

2014 ◽  
Vol 211 (12) ◽  
pp. 2718-2722 ◽  
Author(s):  
Olena Yakovenko ◽  
Ludmila Matzui ◽  
Ludmila Vovchenko ◽  
Alexander Zhuravkov
2015 ◽  
Vol 117 (21) ◽  
pp. 214306 ◽  
Author(s):  
Richard J. Castellano ◽  
Cevat Akin ◽  
Gabriel Giraldo ◽  
Sangil Kim ◽  
Francesco Fornasiero ◽  
...  

2006 ◽  
Vol 44 (12) ◽  
pp. 1751-1762 ◽  
Author(s):  
Cheol Park ◽  
John Wilkinson ◽  
Sumanth Banda ◽  
Zoubeida Ounaies ◽  
Kristopher E. Wise ◽  
...  

Author(s):  
Ming-Wen Wang

Successful structural reinforcement of polymer matrices by carbon nanotube has been shown where significant improvement of mechanical properties was achieved at very low carbon nanotube loading. Due to the mechanical properties of aligned composites is better than random has been demonstrated; the conception is not easy to perform in carbon nanotube polymer composites via conventional techniques. Here, we report a novel operation to actively align and network multi-wall carbon nanotubes (MWCNTs) in a polymer matrix. In this process, MWCNTs were aligned via AC electric field induced dipolar interactions among the nanotubes in a viscous matrix followed by immobilization by curing polymerization under continued application of the anisotropic electric field. In situ SEM verified the electrostatic stabilization of the MWCNTs in the dispersion and the orientation and agglomeration caused by the dielectrophoretic force. Alignment of MWCNTs was controlled as a function of magnitude, frequency, and application time of the applied dielectrophoresis. In the present work, MWCNTs are not only aligned along the field, but also migrate laterally to form thick. The actively aligned MWCNTs amplify the flexural modulus and wear-resisting property.


Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1810
Author(s):  
Mengjie Li ◽  
Qilong Wang ◽  
Ji Xu ◽  
Jian Zhang ◽  
Zhiyang Qi ◽  
...  

Due to the high field enhancement factor and photon-absorption efficiency, carbon nanotubes (CNTs) have been widely used in optically induced field-emission as a cathode. Here, we report vertical carbon nanotube arrays (VCNTAs) that performed as high-density electron sources. A combination of high applied electric field and laser illumination made it possible to modulate the emission with laser pulses. When the bias electric field and laser power density increased, the emission process is sensitive to a power law of the laser intensity, which supports the emission mechanism of optically induced field emission followed by over-the-barrier emission. Furthermore, we determine a polarization dependence that exhibits a cosine behavior, which verifies the high possibility of optically induced field emission.


Small ◽  
2021 ◽  
pp. 2102517
Author(s):  
Jacqueline M. Hicks ◽  
Yun‐Chiao Yao ◽  
Sydney Barber ◽  
Nigel Neate ◽  
Julie A. Watts ◽  
...  

Nanoscale ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 2779-2786 ◽  
Author(s):  
Jing Li ◽  
Santiago Orrego ◽  
Junjie Pan ◽  
Peisheng He ◽  
Sung Hoon Kang

We report a facile sacrificial casting–etching method to synthesize nanoporous carbon nanotube/polymer composites for ultra-sensitive and low-cost piezoresistive pressure sensors.


2014 ◽  
Vol 15 (6) ◽  
pp. 1242-1250 ◽  
Author(s):  
Ke Peng ◽  
Yan-Jun Wan ◽  
Dong-You Ren ◽  
Qing-Wen Zeng ◽  
Long-Cheng Tang

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