Analysis of electrical percolation thresholds in carbon nanotube networks using the Weibull probability distribution

2010 ◽  
Vol 108 (2) ◽  
pp. 024305 ◽  
Author(s):  
S. Pfeifer ◽  
S.-H. Park ◽  
P. R. Bandaru
Keyword(s):  
Carbon Nanotube ◽  
Probability Distribution ◽  
Electrical Percolation ◽  
Percolation Thresholds ◽  
Carbon Nanotube Networks

Electrical percolation thresholds of semiconducting single-walled carbon nanotube networks in field-effect transistors

2015 ◽  
Vol 17 (10) ◽  
pp. 6874-6880 ◽  
Author(s):  
Ho-Kyun Jang ◽  
Jun Eon Jin ◽  
Jun Hee Choi ◽  
Pil-Soo Kang ◽  
Do-Hyun Kim ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Network Density ◽  
Electrical Characteristics ◽  
Single Walled Carbon Nanotube ◽  
Electrical Percolation ◽  
Single Walled Carbon ◽  
Percolation Thresholds ◽  
Carbon Nanotube Networks

We related the network density of semiconducting single-walled carbon nanotube networks at the percolation threshold to their electrical characteristics.

Rheological and electrical percolation thresholds of carbon nanotube/polymer nanocomposites

2012 ◽  
Vol 52 (10) ◽  
pp. 2173-2181 ◽  
Author(s):  
Christian Penu ◽  
Guo-Hua Hu ◽  
Amaia Fernandez ◽  
Philippe Marchal ◽  
Lionel Choplin
Keyword(s):  
Carbon Nanotube ◽  
Polymer Nanocomposites ◽  
Electrical Percolation ◽  
Percolation Thresholds

Electrical Property of Carbon Nanotube/PMMA/PVAc Composite Film

2006 ◽  
Vol 11-12 ◽  
pp. 555-558
Author(s):  
Hong Mei Chai ◽  
Dong Lin Zhao ◽  
Zeng Min Shen
Keyword(s):  
Carbon Nanotube ◽  
Composite Film ◽  
Composite Films ◽  
Solution Casting ◽  
Electrical Percolation ◽  
Graphitized Carbon ◽  
Significant Difference ◽  
Conductive Fillers ◽  
Percolation Thresholds ◽  
Better Than

The carbon nanotube/PMMA/PVAc composite film was prepared by solution casting. The carbon nanotube (CNT) and graphitized carbon nanotube (GCNT) were employed as conductive fillers in the composite films. The conductivity of the GCNT/PMMA/PVAc film is better than that of CNT/PMMA/PVAc film. The electrical percolation thresholds were at 5wt% and 2wt% respectively in the CNT/PMMA/PVAc film and GCNT/PMMA/PVAc film. The volume electric resistivities of CNT/PMMA/PVAc and GCNT/PMMA/PVAc composite film are at 0.044⋅m and 0.007⋅m respectively at 15wt% carbon nanotube. The significant difference of resistivity for the both types of composite film was due to different structure and crystallinity of CNT and GCNT.

scholarly journals Influence of Carbon Nanotube-Pretreatment on the Properties of Polydimethylsiloxane/Carbon Nanotube-Nanocomposites

Polymers ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1355
Author(s):  
Astrid Diekmann ◽  
Marvin C. V. Omelan ◽  
Ulrich Giese
Keyword(s):  
Electrical Conductivity ◽  
Carbon Nanotube ◽  
Mechanical Performance ◽  
Softening Effect ◽  
Electrical Percolation ◽  
Optimum Parameters ◽  
Lauryl Ether ◽  
Solvent Residues ◽  
Electrical Percolation Threshold ◽  
Filler Dispersion

Incorporating nanofillers into elastomers leads to composites with an enormous potential regarding their properties. Unfortunately, nanofillers tend to form agglomerates inhibiting adequate filler dispersion. Therefore, different carbon nanotube (CNT) pretreatment methods were analyzed in this study to enhance the filler dispersion in polydimethylsiloxane (PDMS)/CNT-composites. By pre-dispersing CNTs in solvents an increase in electrical conductivity could be observed within the sequence of tetrahydrofuran (THF) > acetone > chloroform. Optimization of the pre-dispersion step results in an AC conductivity of 3.2 × 10−4 S/cm at 1 Hz and 0.5 wt.% of CNTs and the electrical percolation threshold is decreased to 0.1 wt.% of CNTs. Optimum parameters imply the use of an ultrasonic finger for 60 min in THF. However, solvent residues cause a softening effect deteriorating the mechanical performance of these composites. Concerning the pretreatment of CNTs by physical functionalization, the use of surfactants (sodium dodecylbenzenesulfonate (SDBS) and polyoxyethylene lauryl ether (“Brij35”)) leads to no improvement, neither in electrical conductivity nor in mechanical properties. Chemical functionalization enhances the compatibility of PDMS and CNT but damages the carbon nanotubes due to the oxidation process so that the improvement in conductivity and reinforcement is superimposed by the CNT damage even for mild oxidation conditions.

Generation-recombination and 1/f noise in carbon nanotube networks

2021 ◽  
Vol 118 (24) ◽  
pp. 242102
Author(s):  
A. Rehman ◽  
A. Krajewska ◽  
B. Stonio ◽  
K. Pavlov ◽  
G. Cywinski ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Carbon Nanotube Networks
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