Computability of Percolation Thresholds

2008 ◽  
pp. 321-329
Author(s):  
Olle Häggström
Keyword(s):  
Percolation Thresholds

Study of percolation thresholds in ternary tablets

1996 ◽  
Vol 139 (1-2) ◽  
pp. 177-186 ◽  
Author(s):  
I. Caraballo ◽  
M. Fernández-Arévalo ◽  
M. Millán ◽  
A.M. Rabasco ◽  
H. Leuenberger
Keyword(s):  
Percolation Thresholds

scholarly journals Evaporation-induced self-assembling of few-layer graphene into a fractal-like conductive macro-network with a reduction of percolation threshold

2015 ◽  
Vol 17 (12) ◽  
pp. 7634-7638 ◽  
Author(s):  
I. Janowska
Keyword(s):  
Percolation Threshold ◽  
Layer Graphene ◽  
Self Assembling ◽  
Percolation Thresholds ◽  
Few Layer Graphene

The evaporation-induced self-assembling of a few-layer graphene results in macroscopic branched fractal-like conductive patterns with reduced percolation thresholds.

scholarly journals Establishing patterns in the effect of temperature regime when manufacturing nanocomposites on their heat-conducting properties

2021 ◽  
Vol 4 (5(112)) ◽  
pp. 21-26
Author(s):  
Nataliia Fialko ◽  
Roman Dinzhos ◽  
Julii Sherenkovskii ◽  
Nataliia Meranova ◽  
Diana Izvorska ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Temperature Regime ◽  
Main Parameter ◽  
Polymer Melt ◽  
Effect Of Temperature ◽  
Heat Conducting ◽  
Composite Manufacturing ◽  
Energy Saving Technology ◽  
Percolation Thresholds ◽  
The Impact

This paper reports the experimental study carried out to establish the dependence of the thermal conductivity of polypropylene-based nanocomposites filled with carbon nanotubes on the main parameter of the temperature regime of their manufacturing ‒ the level of overheating a polymer melt relative to its melting point. The study has been conducted for nanocomposites that were manufactured by applying a method based on the mixing of components in the polymer melt applying a special disk extruder. During the composite manufacturing process, the level of melt overheating varied from 10 to 75 K, with the mass share of filler ranging from 0.3 to 10.0 %. It is shown that increasing the overheating of a polymer melt causes an increase in the thermal conductivity of the composites. However, when the overheating has reached a certain value, its further growth does not increase the thermal conductivity of nanocomposites. Based on the established pattern, the rational level of this overheating has been determined. That resolves the tasks of manufacturing highly heat-conducting nanocomposites and implementing appropriate energy-saving technology. Data have been acquired on the effects of the impact of the amount of polymer melt overheating on the values of the first and second percolation thresholds for the examined nanocomposites. It is established that the value of the first percolation threshold is more sensitive to the specified amount of overheating. The dependences of the density of the examined composites on the level of polymer melt overheating have been derived. The correlation between a given dependence and the nature of a corresponding change in the thermal conductivity of the composites has been established. Applying the proposed highly heat-conducting nanocomposites is promising for micro and nanoelectronics, energy, etc.

scholarly journals Site Percolation Thresholds of FCC Lattice

1991 ◽  
Vol 80 (3) ◽  
pp. 461-464 ◽  
Author(s):  
T.R. Gawron ◽  
Marek Cieplak
Keyword(s):  
Site Percolation ◽  
Fcc Lattice ◽  
Percolation Thresholds

scholarly journals Low electrical percolation thresholds and nonlinear effects in graphene-reinforced nanocomposites: A numerical analysis

2018 ◽  
Vol 52 (20) ◽  
pp. 2767-2775 ◽  
Author(s):  
Xiaoxin Lu ◽  
Julien Yvonnet ◽  
Fabrice Detrez ◽  
Jinbo Bai
Keyword(s):  
Numerical Model ◽  
Aspect Ratio ◽  
Percolation Threshold ◽  
Barrier Height ◽  
Nonlinear Effects ◽  
Tunneling Effect ◽  
Graphene Sheets ◽  
Microstructural Parameters ◽  
Electric Behavior ◽  
Percolation Thresholds

A numerical model of graphene-reinforced nanocomposites taking into account the electric tunneling effect is employed to analyze the influence of microstructural parameters on the effective electric conductivity and the percolation thresholds of the composite. The generation procedure for the random microstructures of graphene-reinforced nanocomposites is described. Effects of the barrier height, of graphene aspect ratio and alignment of graphene sheets have been quantitatively evaluated. The results show that both higher graphene aspect ratio and lower barrier height can lead to smaller percolation threshold, and the alignment of graphene sheets results in anisotropic electrical behavior without affecting the percolation threshold. The numerical model also shows the importance of the tunneling effect to reproduce the nonlinear electric behavior and the low percolation thresholds reported in the literature. Finally, results are compared with available experimental data.

Multifunctional Bicontinuous Composite Foams with Ultralow Percolation Thresholds

2018 ◽  
Vol 10 (24) ◽  
pp. 20806-20815 ◽  
Author(s):  
Jiabin Xi ◽  
Yingjun Liu ◽  
Ying Wu ◽  
Jiahan Hu ◽  
Weiwei Gao ◽  
...  
Keyword(s):  
Composite Foams ◽  
Percolation Thresholds

Exact Percolation Thresholds

2009 ◽  
pp. 15-24
Author(s):  
John C. Wierman
Keyword(s):  
Percolation Thresholds
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