Reversible separation of single-walled carbon nanotubes in bundles

Sahoo, Sangeeta; Maranganti, Ravi; Lastella, Sarah; Mallick, Govind; Karna, Shashi; Sharma, Pradeep; Ajayan, Pulickel M.
August 2008
Applied Physics Letters;8/25/2008, Vol. 93 Issue 8, p083120
Academic Journal
We show that electrostatic charging of nanotubes and the consequent repulsion can lead to reversible separation of individual single-walled carbon nanotubes in bundles. Low-energy electron beam irradiation leads to this completely reversible phenomenon. A simple semianalytical model is used to explain the observed separation mechanism. The reversibility of the separation process is attributed to discharging and thermal-fluctuation induced motion of the nanotubes in ambient air. Further, the separation impacts the electrical conductance of small nanotube bundled devices.


Related Articles

  • Modification and shaping of carbon nanotubes with an electron beam. Zhiwei Xu; Rui Wang; Chunhong Wang; Liangsen Liu; Lei Chen; Guangwei Chen // e-Polymers;Jun2011, p1 

    The paper reviews the modification and shaping of electron beam irradiation on carbon nanotubes (CNTs), as well as how this could be potentially useful for electron beam modification of nanotubes. The influence of irradiation on the mechanical property, electrical property and field effect of...

  • Ion irradiation effects on conduction in single-wall carbon nanotube networks. Skákalová, V.; Kaiser, A. B.; Osváth, Z.; Vértesy, G.; Biró, L. P.; Roth, S. // Applied Physics A: Materials Science & Processing;Mar2008, Vol. 90 Issue 4, p597 

    We have measured how irradiation by Ar+ and N+ ions modifies electronic conduction in single-wall carbon nanotube (SWNT) networks, finding dramatically different effects for different thicknesses. For very thin transparent networks, ion irradiation increases localization of charge carriers and...

  • Diameter- and Shape-Controlled ZnS/Si Nanocables and Si Nanotubes for SERS and Photocatalytic Applications. Xue Chen; Chun-Sing Lee; Xiangmin Meng; Wenjun Zhang // Journal of Nanomaterials;2011, p1 

    ZnS/Si nanocables were synthesized via a simple two-step thermal evaporation method. The shape and diameter of the ZnS/Si nanocables can be controlled by adjusting the morphologies of the ZnS nanostructures (nanowire or nanoribbon) obtained in the first step and the deposition time of the Si...

  • Top-down approach to align single-walled carbon nanotubes on silicon substrate. Orofeo, Carlo M.; Ago, Hiroki; Yoshihara, Naoki; Tsuji, Masaharu // Applied Physics Letters;2/2/2009, Vol. 94 Issue 5, pN.PAG 

    We report controlled horizontal alignment of single-walled carbon nanotubes (SWNTs) directly grown on trenched SiO2/Si substrate. The nanotubes were found to align along the trenches, which were created via electron beam lithography followed by reactive ion etching. From the experimental...

  • Suspending single-wall carbon nanotube thin film infrared bolometers on microchannels. Lu, Rongtao; Li, Zhuangzhi; Xu, Guowei; Wu, Judy Z. // Applied Physics Letters;4/20/2009, Vol. 94 Issue 16, p163110 

    Suspended single-wall carbon nanotube (SWCNT) thin film bolometers have been fabricated on microchannels patterned on Si substrates using electron-beam lithography. The much improved bolometric photoresponse is attributed to the reduced thermal link between SWCNT bolometer and substrate, which...

  • SOME PHYSICO-CHEMICAL CHARACTERISTICS OF Y-JUNCTION CARBON NANOTUBES. Yazdani, Javad; Bahrami, Amir // Digest Journal of Nanomaterials & Biostructures (DJNB);Jun2009, Vol. 4 Issue 2, p369 

    Y- junction nanotubes can be formed from chemical vapor deposition, welding two crossed nanotubes with an electron beam at high temperature, or using irradiation techniques on an touching tubes to form a Y- tube. In this paper, we propose a method to compute bipartite edge frustration of Y-...

  • Thermomechanical and electrical properties of PDMS/MWCNT composite films crosslinked by electron beam irradiation. Yan, Jing; Kim, Byungnam; Jeong, Young // Journal of Materials Science;Aug2015, Vol. 50 Issue 16, p5599 

    Electron beam (EB)-crosslinked flexible polydimethylsiloxane (PDMS) composite films containing 1.0-3.0 wt% pristine MWCNT were manufactured, and their structures, thermomechanical, and electrical properties were systematically investigated for applications as electric heating materials. The...

  • Chemical patterning of Ag(111): Spatially confined oxide formation induced by electron beam irradiation. Günther, S.; Reichelt, R.; Wintterlin, J.; Barinov, A.; Menteş, T. O.; Niño, M. Á.; Locatelli, A. // Applied Physics Letters;12/8/2008, Vol. 93 Issue 23, p233117 

    Low energy electron irradiation of a Ag(111) surface during NO2 adsorption at 300 K induces formation of Ag oxide. Using a spatially confined electron beam, small Ag2O spots could be grown with a sharp, ∼100 nm wide, boundary to the nonirradiated metallic surface. Since the structure size...

  • Dynamic mechanical analysis of electron beam irradiated sulphur vulcanized nitrile rubber network—some unique features. Vijayabaskar, V.; Bhowmick, A. // Journal of Materials Science;Jun2005, Vol. 40 Issue 11, p2823 

    Mixed crosslinking system with electron beam irradiation as one of the crosslinkers in rubber has been developed for the first time. This paper describes some unique features of dynamic mechanical properties of the electron beam irradiated nitrile rubber vulcanizates at varying levels of sulphur...


Read the Article


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

Try another library?
Sign out of this library

Other Topics