The effect of molecular chain polarity on electric field-induced aligned conductive carbon nanotube network formation in polymer melt

2012 ◽  
Vol 72 (15) ◽  
pp. 1875-1881 ◽  
Author(s):  
Yi-Chuan Zhang ◽  
Ding Zheng ◽  
Huan Pang ◽  
Jian-Hua Tang ◽  
Zhong-Ming Li
Keyword(s):  
Carbon Nanotube ◽  
Electric Field ◽  
Network Formation ◽  
Polymer Melt ◽  
Molecular Chain ◽  
Carbon Nanotube Network

Network Formation and Electrical Conduction in Carbon Nanotube Modified Polydimethylsiloxane

2012 ◽  
Vol 1410 ◽  
Author(s):  
Cyrill Cattin ◽  
Pascal Hubert
Keyword(s):  
Carbon Nanotube ◽  
Electrical Conduction ◽  
Conduction Mechanism ◽  
Network Formation ◽  
Degree Of Polymerization ◽  
Filler Concentration ◽  
Rheological Characterization ◽  
Electron Tunnelling ◽  
Carbon Nanotube Network ◽  
Parallel Circuit

ABSTRACTThe focus of this research is on network formation and electrical conduction in carbon nanotube polydimethylsiloxane nanocomposites. Carbon nanotube network formation prior to and during polymerization was monitored by means of simultaneous electrical and rheological characterization. Processing induced network formation at filler concentrations below statistical percolation was observed, and both the electrical resistivity and the voltage dependence of the sample resistance were found to increase with the degree of polymerization, indicating carbon nanotube separation during polymer cure. Electron tunnelling through insulating polymer layers was identified as the main conduction mechanism. Information about the final network structure and further details about electrical conduction were obtained from the piezoresistive response of the material. Electron tunnelling was found to be dominant at filler concentrations close to the percolation threshold. With increasing filler concentration a densification of the carbon nanotube network was observed, and the resistance behaviour at high filler content was better described by the behaviour of a parallel circuit.

Influence of surface polarity of carbon nanotubes on electric field induced aligned conductive network formation in a polymer melt

RSC Advances ◽  
2013 ◽  
Vol 3 (46) ◽  
pp. 24185 ◽  
Author(s):  
Yu Bao ◽  
Huan Pang ◽  
Ling Xu ◽  
Cheng-Hua Cui ◽  
Xin Jiang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electric Field ◽  
Network Formation ◽  
Polymer Melt ◽  
Conductive Network ◽  
Surface Polarity

Carbon Nanotube Network Formation from Evaporating Sessile Drops

2006 ◽  
Vol 110 (26) ◽  
pp. 13029-13036 ◽  
Author(s):  
William R. Small ◽  
Chris D. Walton ◽  
Joachim Loos ◽  
Marc in het Panhuis
Keyword(s):  
Carbon Nanotube ◽  
Network Formation ◽  
Carbon Nanotube Network ◽  
Sessile Drops

scholarly journals Optically Induced Field-Emission Source Based on Aligned Vertical Carbon Nanotube Arrays

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1810
Author(s):  
Mengjie Li ◽  
Qilong Wang ◽  
Ji Xu ◽  
Jian Zhang ◽  
Zhiyang Qi ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Electric Field ◽  
Field Emission ◽  
Field Enhancement ◽  
Absorption Efficiency ◽  
Photon Absorption ◽  
Nanotube Arrays ◽  
Carbon Nanotube Arrays ◽  
Induced Field ◽  
Optically Induced

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.

scholarly journals Electric Field Induced Biomimetic Transmembrane Electron Transport Using Carbon Nanotube Porins

Small ◽  
2021 ◽  
pp. 2102517
Author(s):  
Jacqueline M. Hicks ◽  
Yun‐Chiao Yao ◽  
Sydney Barber ◽  
Nigel Neate ◽  
Julie A. Watts ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Electron Transport ◽  
Electric Field ◽  
Transmembrane Electron Transport
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