TITLE

Electroconductance in single-wall carbon nanotubes

AUTHOR(S)
Jaiswal, Manu; Sangeeth, C. S. Suchand; Menon, Reghu
PUB. DATE
July 2009
SOURCE
Applied Physics Letters;7/20/2009, Vol. 95 Issue 3, p032111
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A comparative study of the electric-field induced hopping transport probes the effective dimensionality (D) in bulk and ultrathin films of single-wall carbon nanotubes (SWNTs). The values of the scaling function exponents for the electroconductance are found to be consistent with that in three-dimensional and two-dimensional systems. The significant difference in threshold voltage in these two types of SWNTs is a consequence of the variation in the number of energetically favorable sites available for charge carriers to hop by using the energy from the field. Furthermore, a modification to the magnetotransport is observed under high electric-fields.
ACCESSION #
43398024

 

Related Articles

  • Hybrid carbon nanotube and dye-doped liquid crystal material for holographic imaging. Abbasov, M. E.; Ghosh, S.; Quach, A.; Carlisle, G. O. // Journal of Materials Science: Materials in Electronics;Aug2010, Vol. 21 Issue 8, p854 

    Without the application of AC or DC electric fields, we recorded permanent holographic images in a hybrid material based on the nematic liquid crystal E7, doped with 0.6% Methyl Red (MR) and 0.002% single-wall carbon nanotubes (CNTs). The images were recorded using a 488-nm laser and...

  • Electrokinetics of scalable, electric-field-assisted fabrication of vertically aligned carbon-nanotube/polymer composites. Castellano, Richard J.; Akin, Cevat; Giraldo, Gabriel; Kim, Sangil; Fornasiero, Francesco; Shan, Jerry W. // Journal of Applied Physics;6/7/2015, Vol. 117 Issue 21, p214306-1 

    Composite thin films incorporating vertically aligned carbon nanotubes (VACNTs) offer promise for a variety of applications where the vertical alignment of the CNTs is critical to meet performance requirements, e.g., highly permeable membranes, thermal interfaces, dry adhesives, and films with...

  • Efficient fabrication of highly conductive and transparent carbon nanotube thin films on polymer substrates. Gaozhi Xiao; Ye Tao; Jianping Lu; Zhiyi Zhang; Kingston, David // Journal of Materials Science;May2011, Vol. 46 Issue 10, p3399 

    This paper reports an efficient solution dip coating method for the fabrication of highly transparent and conductive single-walled carbon nanotubes (SWCNTs) based thin films. The key to achieve this is properly preparing the polymer surfaces. In this paper we report a surface pretreatment...

  • Effects of atomic-scale surface morphology on carbon nanotube alignment on thermally oxidized silicon surface. Yamada, Kazuki; Chiashi, Shohei; Takahashi, Katsuhiro; Homma, Yoshikazu // Applied Physics Letters;3/8/2010, Vol. 96 Issue 10, p103102 

    We have investigated the effects of atomic-scale surface morphology on the single-walled carbon nanotube (SWNT) growth by using atomic step-structure-controlled SiO2/Si substrates. SWNTs initially extended randomly on the surface, and when they became longer than 3 μm, they followed the...

  • Platinum thin films deposited on silicon oxide by focused ion beam: characterization and application. Vaz, A. R.; da Silva, M. M.; Leon, J.; Moshkalev, S. A.; Swart, J. W. // Journal of Materials Science;May2008, Vol. 43 Issue 10, p3429 

    Focused ion beam system was used for deposition of platinum (Pt) thin films on thermally oxidized silicon (Si). Various test patterns (squares and lines) were deposited for electrical characterization of the films, using 2- and 4-terminal measurements. Tests with parallel Pt lines were also...

  • Electronic structure of single-walled carbon nanotubes on ultrathin insulating films. Shin, Hyung-Joon; Clair, Sylvain; Kim, Yousoo; Kawai, Maki // Applied Physics Letters;12/8/2008, Vol. 93 Issue 23, p233104 

    The electronic structures of single-walled carbon nanotubes on Ag(100) and on ultrathin insulating NaCl(100)/Ag(100) were studied using low-temperature scanning tunneling microscopy. The Fermi level of the nanotubes was shifted toward the conduction band on Ag(100), while it was shifted toward...

  • A thin film triode type carbon nanotube field emission cathode. Sanborn, Graham; Turano, Stephan; Collins, Peter; Ready, W. // Applied Physics A: Materials Science & Processing;Jan2013, Vol. 110 Issue 1, p99 

    The field electron emission of carbon nanotubes has been heavily studied over the past two decades for various applications, such as in display technologies, microwave amplifiers, and spacecraft propulsion. However, a commercializable lightweight and internally gated electron source has yet to...

  • Micro- and nanostructurization of surfaces -- techniques and applications. Górecka-Drzazga, Anna // Optica Applicata;2007, Vol. 37 Issue 4, p341 

    In the paper some surface structurization methods are presented. Wet and/or dry etching, and thermal oxidation process have been used to form arrays of gated and non-gated sharp silicon microtips on a silicon wafer. A transfer mold technique (mold) has been applied to produce arrays of silicon...

  • Electrochemical Biosensor Based on Boron-Doped Diamond Electrodes with Modified Surfaces. Yuan Yu; Yanli Zhou; Liangzhuan Wu; Jinfang Zhi // International Journal of Electrochemistry;2012, p1 

    No abstract available.

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

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

Try another library?
Sign out of this library

Other Topics