Catalyst rotation, twisting, and bending during multiwall carbon nanotube growth

Michael J. Behr, K. Andre Mkhoyan, Eray Aydil

Research output: Contribution to journalArticle

Abstract

Internal crystalline structure of cementite catalyst particles located inside the base of multiwall carbon nanotubes was studied using nanoprobe convergent-beam electron diffraction. The catalyst particles are single crystalline but exhibit combinations of small-angle (∼1°-3°) rotations, twists, and bends along their axial length between adjacent locations. Distortions are most severe away from the base up into the nanotube where the number of walls is large. Near the attachment point to the substrate, however, where few, if any graphene walls exist, particles remain undistorted. This suggests that the stresses generated by the surrounding nanotube distort the catalyst particle during growth.

Original languageEnglish (US)
Pages (from-to)3840-3845
Number of pages6
JournalCarbon
Volume48
Issue number13
DOIs
StatePublished - Nov 1 2010

Fingerprint

Carbon Nanotubes
Carbon nanotubes
Nanotubes
Catalysts
Nanoprobes
Crystalline materials
Graphite
Electron diffraction
Graphene
Substrates

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Catalyst rotation, twisting, and bending during multiwall carbon nanotube growth. / Behr, Michael J.; Andre Mkhoyan, K.; Aydil, Eray.

In: Carbon, Vol. 48, No. 13, 01.11.2010, p. 3840-3845.

Research output: Contribution to journalArticle

Behr, Michael J. ; Andre Mkhoyan, K. ; Aydil, Eray. / Catalyst rotation, twisting, and bending during multiwall carbon nanotube growth. In: Carbon. 2010 ; Vol. 48, No. 13. pp. 3840-3845.
@article{929ea8f9f897475cb83a552704b842cc,
title = "Catalyst rotation, twisting, and bending during multiwall carbon nanotube growth",
abstract = "Internal crystalline structure of cementite catalyst particles located inside the base of multiwall carbon nanotubes was studied using nanoprobe convergent-beam electron diffraction. The catalyst particles are single crystalline but exhibit combinations of small-angle (∼1°-3°) rotations, twists, and bends along their axial length between adjacent locations. Distortions are most severe away from the base up into the nanotube where the number of walls is large. Near the attachment point to the substrate, however, where few, if any graphene walls exist, particles remain undistorted. This suggests that the stresses generated by the surrounding nanotube distort the catalyst particle during growth.",
author = "Behr, {Michael J.} and {Andre Mkhoyan}, K. and Eray Aydil",
year = "2010",
month = "11",
day = "1",
doi = "10.1016/j.carbon.2010.06.049",
language = "English (US)",
volume = "48",
pages = "3840--3845",
journal = "Carbon",
issn = "0008-6223",
publisher = "Elsevier Limited",
number = "13",

}

TY - JOUR

T1 - Catalyst rotation, twisting, and bending during multiwall carbon nanotube growth

AU - Behr, Michael J.

AU - Andre Mkhoyan, K.

AU - Aydil, Eray

PY - 2010/11/1

Y1 - 2010/11/1

N2 - Internal crystalline structure of cementite catalyst particles located inside the base of multiwall carbon nanotubes was studied using nanoprobe convergent-beam electron diffraction. The catalyst particles are single crystalline but exhibit combinations of small-angle (∼1°-3°) rotations, twists, and bends along their axial length between adjacent locations. Distortions are most severe away from the base up into the nanotube where the number of walls is large. Near the attachment point to the substrate, however, where few, if any graphene walls exist, particles remain undistorted. This suggests that the stresses generated by the surrounding nanotube distort the catalyst particle during growth.

AB - Internal crystalline structure of cementite catalyst particles located inside the base of multiwall carbon nanotubes was studied using nanoprobe convergent-beam electron diffraction. The catalyst particles are single crystalline but exhibit combinations of small-angle (∼1°-3°) rotations, twists, and bends along their axial length between adjacent locations. Distortions are most severe away from the base up into the nanotube where the number of walls is large. Near the attachment point to the substrate, however, where few, if any graphene walls exist, particles remain undistorted. This suggests that the stresses generated by the surrounding nanotube distort the catalyst particle during growth.

UR - http://www.scopus.com/inward/record.url?scp=77955425765&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77955425765&partnerID=8YFLogxK

U2 - 10.1016/j.carbon.2010.06.049

DO - 10.1016/j.carbon.2010.06.049

M3 - Article

VL - 48

SP - 3840

EP - 3845

JO - Carbon

JF - Carbon

SN - 0008-6223

IS - 13

ER -