Significant influence of film thickness on the percolation threshold of multiwall carbon nanotube/low density polyethylene composite films

Fu, M.; Yu, Y.; Xie, J. J.; Wang, L. P.; Fan, M. Y.; Jiang, S. L.; Zeng, Y. K.
January 2009
Applied Physics Letters;1/5/2009, Vol. 94 Issue 1, p012904
Academic Journal
A series of multiwall carbon nanotube/low density polyethylene composite films with different thicknesses and different carbon nanotube volume fractions was prepared and studied. The result showed an interesting phenomenon which has not been reported before: when the thickness was reduced to the length range of the carbon nanotube filler, it could remarkably affect the percolation threshold of the composite films. Classical theories have been introduced to describe the phenomenon. This result could have significance in future applications of percolative composite thin/thick films.


Related Articles

  • Highly polarized absorption and photoluminescence of stretch-aligned single-wall carbon nanotubes dispersed in gelatin films. Kim, Y.; Minami, N.; Kazaoui, S. // Applied Physics Letters;2/14/2005, Vol. 86 Issue 7, p073103 

    Substantial alignment of isolated individual single-wall carbon nanotubes (SWNTs) has been achieved by mechanically stretching gelatin films filled with homogeneously dispersed SWNTs. Highly polarized absorption and photoluminescence are observed that are attributed to interband optical...

  • Modified Timoshenko formula for bending of ultrathin strained bilayer films. Zang, Ji; Liu, Feng // Applied Physics Letters;1/14/2008, Vol. 92 Issue 2, p021905 

    Mechanical bending of nanoscale thin films can be quite different from that of macroscopic thick films. However, current understanding of mechanical bending of nanoscale thin strained bilayer films is often limited within the Timoshenko model [Timoshenko, J. Opt. Soc. Am. 11, 233 (1925)], which...

  • Electrical and magnetic properties of nanomaterials containing iron or cobalt nanoparticles. Yurkov, G.; Fionov, A.; Koksharov, Yu.; Koleso, V.; Gubin, S. // Inorganic Materials;Aug2007, Vol. 43 Issue 8, p834 

    We have prepared nanocomposites consisting of narrowly sized metal-containing nanoparticles embedded in a polyethylene matrix and have established conditions for the fabrication of thick films and bulk materials from the synthesized polymer powders. Dielectric permittivity and resistivity...

  • Mechanical and electrical evaluation of parylene-C encapsulated carbon nanotube networks on a flexible substrate. Chia-Ling Chen; Lopez, Ernesto; Yung-Joon Jung; Müftü, Sinan; Selvarasah, Selvapraba; Dokmeci, Mehmet R. // Applied Physics Letters;9/1/2008, Vol. 93 Issue 9, p093109 

    Carbon nanotube networks are an emerging conductive nanomaterial with applications including thin film transistors, interconnects, and sensors. In this letter, we demonstrate the fabrication of single-walled carbon nanotube (SWNT) networks on a flexible polymer substrate and then provide...

  • The relationship between network morphology and conductivity in nanotube films. Lyons, Philip E.; De, Sukanta; Blighe, Fiona; Nicolosi, Valeria; Pereira, Luiz Felipe C.; Ferreira, Mauro S.; Coleman, Jonathan N. // Journal of Applied Physics;Aug2008, Vol. 104 Issue 4, p044302 

    We have characterized both the direct current conductivity and morphology of a wide range of films made from bundled nanotubes, produced by a selection of commercial suppliers. The conductivity increases with increasing nanotube graphitization but decreases with increasing film porosity P and...

  • Conductivity of transparent electrodes made from interacting nanotubes. Maillaud, Laurent; Zakri, Cécile; Ly, Isabelle; Pénicaud, Alain; Poulin, Philippe // Applied Physics Letters;Dec2013, Vol. 103 Issue 26, p263106 

    Interactions in carbon nanotube (CNT) dispersions alter the morphology of films made from such dispersions. Weak attractive interactions induce an enhancement of the electrical conductivity. This phenomenon is observed in thin films that lie in a near percolated regime. Strong interactions...

  • Generalized proximity effect model in superconducting bi- and trilayer films. Brammertz, G.; Poelaert, A.; Golubov, A. A.; Verhoeve, P.; Peacock, A.; Rogalla, H. // Journal of Applied Physics;7/1/2001, Vol. 90 Issue 1, p355 

    This article presents a general model for calculating the density of states and the Cooper pair potential in proximity-coupled superconducting bi- and trilayer films. It is valid for any kind of bilayer S[sub 1]-S[sub 2], whatever the quality of the materials S[sub 1] and S[sub 2], the quality...

  • Thermomechanical stress analysis of laminated thick-film multilayer substrates. Kim, Jin S.; Paik, Kyung W.; Lim, Ji H.; Earmme, Youn Y. // Applied Physics Letters;6/6/1999, Vol. 74 Issue 23, p3507 

    Describes a thermomechanical stress analysis of laminated thick-film multilayer substrates. Measurement of the maximum bow values using a laser profilometry during thermal cycling; Overlaying of a polymeric film on a silicon substrate using a polymeric adhesive in the lamination process.

  • Resistive switching in aluminum/anodized aluminum film structure without forming process. Zhu, W.; Chen, T. P.; Liu, Z.; Yang, M.; Liu, Y.; Fung, S. // Journal of Applied Physics;Nov2009, Vol. 106 Issue 9, p093706 

    Metal-insulator-metal (MIM) structure was fabricated by partially anodizing aluminum film followed by deposition of another aluminum film. Unipolar resistive switching between a high-resistance state and a low-resistance state with a high resistance ratio (>∼104) was observed from the...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics